![USE GEM...
RubyGems Environment:
- RUBYGEMS VERSION: 1.8.25
- RUBY VERSION: 1.9.3 (2012-11-10 patchlevel 327) [x86_64-darwin11.4.2]
- INSTALLATION DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fas
- RUBY EXECUTABLE: /Volumes/Valinor/Users/evan/.rvm/rubies/ruby-1.9.3-p327-fast/bin/
- EXECUTABLE DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-
fast@tracks/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-darwin-11
- GEM PATHS:
- /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks
- /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@global
- GEM CONFIGURATION:
$ gem env
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-27-320.jpg)
![USE GEM...
RubyGems Environment:
- RUBYGEMS VERSION: 1.8.25
- RUBY VERSION: 1.9.3 (2012-11-10 patchlevel 327) [x86_64-darwin11.4.2]
- INSTALLATION DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fas
- RUBY EXECUTABLE: /Volumes/Valinor/Users/evan/.rvm/rubies/ruby-1.9.3-p327-fast/bin/
- EXECUTABLE DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-
fast@tracks/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-darwin-11
- GEM PATHS:
- /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks
- /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@global
- GEM CONFIGURATION:
$ gem env
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-28-320.jpg)
![USE GEM...
RubyGems Environment:
- RUBYGEMS VERSION: 1.8.25
- RUBY VERSION: 1.9.3 (2012-11-10 patchlevel 327) [x86_64-darwin11.4.2]
- INSTALLATION DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fas
- RUBY EXECUTABLE: /Volumes/Valinor/Users/evan/.rvm/rubies/ruby-1.9.3-p327-fast/bin/
- EXECUTABLE DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-
fast@tracks/bin
- RUBYGEMS PLATFORMS:
- ruby
- x86_64-darwin-11
- GEM PATHS:
- /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks
- /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@global
- GEM CONFIGURATION:
$ gem env
$ cd /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-29-320.jpg)
![HOW DID I GET HERE?
#activesupport-3.2.12/lib/active_support/core_ext/hash
class Hash
# Return a new hash with all keys converted to symbols, as
# long as they respond to +to_sym+.
#
# { 'name' => 'Rob', 'years' => '28' }.symbolize_keys
# #=> { :name => "Rob", :years => "28" }
def symbolize_keys
require ‘pp’
pp caller[0..10]
dup.symbolize_keys!
end
alias_method :to_options, :symbolize_keys
alias_method :to_options!, :symbolize_keys!
# Validate all keys in a hash match *valid keys, raising
ArgumentError on a mismatch.
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-43-320.jpg)
![“WHO REQUIRED ME?”
p “Required By” => caller[0]
module SomePossiblyIncludedMonkeyPatch
def change_important_class_behavior
# ...
# ...
end
def obscure_some_key_method
# ...
# ...
end
end
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-52-320.jpg)
![WHO CAN I CALL?
(rdb:1) eval self.methods.sort
[:!, :!=, :!~, :<=>, :==, :===, :=~, :[], :
[]=, :__id__, :__send__, :`, :acts_like?, :all?, :any?, :as_json,
:assert_valid_keys, :assoc, :binding_n, :blank?, :breakpoint,
:capture, :chunk, :class, :class_eval, :clear, :clone, :collect,
:collect_concat, :compare_by_identity, :compare_by_identity?,
:count, :cycle, :dbg_print, :dbg_puts, :debugger, :deep_dup,
:deep_merge, :deep_merge!, :deep_symbolize_keys, :default,
:default=, :default_proc, :default_proc=,
:define_singleton_method, :delete, :delete_if, :detect, :diff,
:display, :drop, :drop_while, :dup, :duplicable?, :each,
:each_cons, :each_entry, :each_key, :each_pair, :each_slice,
:each_value, :each_with_index, :each_with_object, :empty?,
:enable_warnings, :encode_json, :entries, :enum_for, :eql?,
:equal?, :except, :except!, :exclude?, :extend, :extract!,
:extractable_options?, :fetch, :find, :find_all, :find_index,
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-69-320.jpg)
![WHO CAN I CALL?
(rdb:1) eval self.methods.grep(/merge/)
[:deep_merge!, :reverse_merge!, :merge!, :merge, :deep_merge,
:reverse_merge, :merge_resultset]
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-71-320.jpg)
![WHO DO YOU INCLUDE?
(rdb:1) pp dup.class.included_modules
[SimpleCov::HashMergeHelper,
JSON::Ext::Generator::GeneratorMethods::Hash,
Enumerable,
RSpec::Steps::ClassMethods,
JSON::Ext::Generator::GeneratorMethods::Object,
ActiveSupport::Dependencies::Loadable,
PP::ObjectMixin,
Kernel]
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-74-320.jpg)
![module RSpec
module Core
class ExampleGroup
class << self
delegate_to_metadata :described_class, :file_path
alias_method :display_name, :description
alias_method :describes, :described_class
# @private
# @macro [attach] define_example_method
# @param [String] name
# @param [Hash] extra_options
# @param [Block] implementation
def self.define_example_method(name, extra_options={})
module_eval(<<-END_RUBY, __FILE__, __LINE__)
def #{name}(desc=nil, *args, &block)
options = build_metadata_hash_from(args)
options.update(:pending => RSpec::Core::Pending::) unless block
options.update(#{extra_options.inspect})
examples << RSpec::Core::Example.new(self, desc, options, block)
examples.last
end
END_RUBY
end
define_example_method :example
define_example_method :it
define_example_method :specify
define_example_method :focus, :focused => true, :focus => true
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-92-320.jpg)
![module RSpec
module Core
class ExampleGroup
class << self
delegate_to_metadata :described_class, :file_path
alias_method :display_name, :description
alias_method :describes, :described_class
# @private
# @macro [attach] define_example_method
# @param [String] name
# @param [Hash] extra_options
# @param [Block] implementation
def self.define_example_method(name, extra_options={})
module_eval(<<-END_RUBY, __FILE__, __LINE__)
def #{name}(desc=nil, *args, &block)
options = build_metadata_hash_from(args)
options.update(:pending => RSpec::Core::Pending::) unless block
options.update(#{extra_options.inspect})
examples << RSpec::Core::Example.new(self, desc, options, block)
examples.last
end
END_RUBY
end
define_example_method :example
define_example_method :it
define_example_method :specify
define_example_method :focus, :focused => true, :focus => true
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-93-320.jpg)
![WHO DO YOU INCLUDE?
(rdb:1) pp self.class.included_modules
[SimpleCov::HashMergeHelper,
JSON::Ext::Generator::GeneratorMethods::Hash,
Enumerable,
RSpec::Steps::ClassMethods,
JSON::Ext::Generator::GeneratorMethods::Object,
ActiveSupport::Dependencies::Loadable,
PP::ObjectMixin,
Kernel]
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-96-320.jpg)
![BUT DEFINED WHERE?
(rdb:1) pp self.method(:merge_resultset).source_location
["~/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/
simplecov-0.5.4/lib/simplecov/merge_helpers.rb", 25]
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-100-320.jpg)
![EVEN WORKS ON
DYNAMIC METHODS!
(rdb:1) eval method(:example).source_location
["/Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-
fast@tracks/gems/rspec-core-2.13.1/lib/rspec/core/
example_group.rb", 61]
Friday, August 9, 13](https://image.slidesharecdn.com/codediving08-130809123454-phpapp01/85/Code-diving-in-Ruby-and-Rails-104-320.jpg)
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Code diving in Ruby and Rails
- 1. Code Diving in Ruby Evan Dorn Founder, Logical Reality Design http://lrdesign.com [email protected] @idahoev Friday, August 9, 13
- 2. SO YOU’RE CODING ALONG WHEN... Friday, August 9, 13
- 3. 1) InvoicesController as an admin GET index should paginate all unpaid invoices as @unpaid_invoices Failure/Error: get :index NoMethodError: undefined method `unpayed' for #<Class:0x007fd8cfe9ee18> # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activerecord-3.2.12/lib/active_record/dynamic_matchers.rb:55:in `method_missing' # ./app/controllers/invoices_controller.rb:7:in `index' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/implicit_render.rb:4:in `send_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/abstract_controller/base.rb:167:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/rendering.rb:10:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/abstract_controller/callbacks.rb:18:in `block in process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:447:in `_run__3859364058582123788__process_action__4176185741589430016__callbacks' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:405:in `__run_callback' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:81:in `run_callbacks' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/abstract_controller/callbacks.rb:17:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/rescue.rb:29:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/instrumentation.rb:30:in `block in process_action' Friday, August 9, 13
- 4. AND YOU’RE LIKE Friday, August 9, 13
- 5. BUT THEN YOU NOTICE THIS... Friday, August 9, 13
- 6. 1) InvoicesController as an admin GET index should paginate all unpaid invoices as @unpaid_invoices Failure/Error: get :index NoMethodError: undefined method `unpayed' for #<Class:0x007fd8cfe9ee18> # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activerecord-3.2.12/lib/active_record/dynamic_matchers.rb:55:in `method_missing' # ./app/controllers/invoices_controller.rb:7:in `index' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/implicit_render.rb:4:in `send_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/abstract_controller/base.rb:167:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/rendering.rb:10:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/abstract_controller/callbacks.rb:18:in `block in process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:447:in `_run__3859364058582123788__process_action__4176185741589430016__callbacks' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:405:in `__run_callback' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:81:in `run_callbacks' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/abstract_controller/callbacks.rb:17:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/rescue.rb:29:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/instrumentation.rb:30:in `block in process_action' Friday, August 9, 13
- 7. 1) InvoicesController as an admin GET index should paginate all unpaid invoices as @unpaid_invoices Failure/Error: get :index NoMethodError: undefined method `unpayed' for #<Class:0x007fd8cfe9ee18> # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activerecord-3.2.12/lib/active_record/dynamic_matchers.rb:55:in `method_missing' # ./app/controllers/invoices_controller.rb:7:in `index' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/implicit_render.rb:4:in `send_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/abstract_controller/base.rb:167:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/rendering.rb:10:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/abstract_controller/callbacks.rb:18:in `block in process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:447:in `_run__3859364058582123788__process_action__4176185741589430016__callbacks' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:405:in `__run_callback' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activesupport-3.2.12/lib/active_support/callbacks.rb:81:in `run_callbacks' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/abstract_controller/callbacks.rb:17:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/rescue.rb:29:in `process_action' # /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ actionpack-3.2.12/lib/action_controller/metal/instrumentation.rb:30:in `block in process_action' Friday, August 9, 13
- 8. BUT WHAT ABOUT WHEN... Friday, August 9, 13
- 9. /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/active_support/ core_ext/hash/keys.rb:25:in `symbolize_keys': You blew it, dumbass (RuntimeError) from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:45:in `resolve_hash_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:41:in `resolve_string_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:25:in `spec' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:130:in `establish_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/railtie.rb:82:in `block (2 levels) in <class:Railtie>' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:36:in `instance_eval' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:36:in `execute_hook' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:26:in `block in on_load' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:25:in `each' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:25:in `on_load' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/railtie.rb:74:in `block in <class:Railtie>' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:30:in `instance_exec' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:30:in `run' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:55:in `block in run_initializers' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:54:in `each' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:54:in `run_initializers' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ application.rb:136:in `initialize!' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ railtie/configurable.rb:30:in `method_missing' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/config/environment.rb:5:in `<top (required)>' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/spec/spec_helper.rb:3:in `require' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/spec/spec_helper.rb:3:in `<top Friday, August 9, 13
- 10. /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/active_support/ core_ext/hash/keys.rb:25:in `symbolize_keys': You blew it, dumbass (RuntimeError) from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:45:in `resolve_hash_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:41:in `resolve_string_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:25:in `spec' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:130:in `establish_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/railtie.rb:82:in `block (2 levels) in <class:Railtie>' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:36:in `instance_eval' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:36:in `execute_hook' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:26:in `block in on_load' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:25:in `each' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:25:in `on_load' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/railtie.rb:74:in `block in <class:Railtie>' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:30:in `instance_exec' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:30:in `run' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:55:in `block in run_initializers' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:54:in `each' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:54:in `run_initializers' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ application.rb:136:in `initialize!' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ railtie/configurable.rb:30:in `method_missing' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/config/environment.rb:5:in `<top (required)>' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/spec/spec_helper.rb:3:in `require' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/spec/spec_helper.rb:3:in `<top Friday, August 9, 13
- 11. /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/active_support/ core_ext/hash/keys.rb:25:in `symbolize_keys': You blew it, dumbass (RuntimeError) from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:45:in `resolve_hash_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:41:in `resolve_string_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:25:in `spec' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:130:in `establish_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/railtie.rb:82:in `block (2 levels) in <class:Railtie>' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:36:in `instance_eval' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:36:in `execute_hook' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:26:in `block in on_load' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:25:in `each' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:25:in `on_load' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/railtie.rb:74:in `block in <class:Railtie>' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:30:in `instance_exec' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:30:in `run' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:55:in `block in run_initializers' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:54:in `each' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:54:in `run_initializers' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ application.rb:136:in `initialize!' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ railtie/configurable.rb:30:in `method_missing' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/config/environment.rb:5:in `<top (required)>' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/spec/spec_helper.rb:3:in `require' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/spec/spec_helper.rb:3:in `<top Friday, August 9, 13
- 12. /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/active_support/ core_ext/hash/keys.rb:25:in `symbolize_keys': You blew it, dumbass (RuntimeError) from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:45:in `resolve_hash_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:41:in `resolve_string_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:25:in `spec' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/connection_adapters/abstract/connection_specification.rb:130:in `establish_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/railtie.rb:82:in `block (2 levels) in <class:Railtie>' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:36:in `instance_eval' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:36:in `execute_hook' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:26:in `block in on_load' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:25:in `each' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/ active_support/lazy_load_hooks.rb:25:in `on_load' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activerecord-3.2.12/lib/ active_record/railtie.rb:74:in `block in <class:Railtie>' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:30:in `instance_exec' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:30:in `run' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:55:in `block in run_initializers' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:54:in `each' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ initializable.rb:54:in `run_initializers' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ application.rb:136:in `initialize!' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/railties-3.2.12/lib/rails/ railtie/configurable.rb:30:in `method_missing' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/config/environment.rb:5:in `<top (required)>' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/spec/spec_helper.rb:3:in `require' from /Volumes/Valinor/Users/evan/Development/Ruby/apps/tracks/spec/spec_helper.rb:3:in `<top Friday, August 9, 13
- 13. IT’S PROBABLY SOMETHING YOU DID. Friday, August 9, 13
- 14. IT’S PROBABLY SOMETHING YOU DID. (but the error’s not in your code) Friday, August 9, 13
- 15. RAILS’ CODE IS HARD TO UNDERSTAND Friday, August 9, 13
- 16. RAILS’ CODE IS HARD TO UNDERSTAND But that doesn’t matter! Dive in anyway. Friday, August 9, 13
- 17. RUBY IS A RUN-TIME LANGUAGE Friday, August 9, 13
- 18. RUBY IS A RUN-TIME LANGUAGE •This makes it hard to find stuff! Friday, August 9, 13
- 19. RUBY IS A RUN-TIME LANGUAGE •This makes it hard to find stuff! •Your IDE isn’t much help Friday, August 9, 13
- 20. RUBY IS A RUN-TIME LANGUAGE •This makes it hard to find stuff! •Your IDE isn’t much help •So find stuff AT RUN TIME Friday, August 9, 13
- 21. JUST OPEN THAT FILE Friday, August 9, 13
- 22. JUST OPEN THAT FILE Don’t be intimidated ... it’s all just Ruby Friday, August 9, 13
- 23. JUST OPEN THAT FILE ~/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/active_support/ core_ext/hash/keys.rb:25:in `symbolize_keys': You blew it, dumbass (RuntimeError) from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activerecord-3.2.12/lib/active_record/connection_adapters/abstract/ connection_specification.rb:45:in `resolve_hash_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activerecord-3.2.12/lib/active_record/connection_adapters/abstract/ connection_specification.rb:41:in `resolve_string_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ Don’t be intimidated ... it’s all just Ruby Friday, August 9, 13
- 24. JUST OPEN THAT FILE ~/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12/lib/active_support/ core_ext/hash/keys.rb:25:in `symbolize_keys': You blew it, dumbass (RuntimeError) from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activerecord-3.2.12/lib/active_record/connection_adapters/abstract/ connection_specification.rb:45:in `resolve_hash_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ activerecord-3.2.12/lib/active_record/connection_adapters/abstract/ connection_specification.rb:41:in `resolve_string_connection' from /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ $ vim ~evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/activesupport-3.2.12 Don’t be intimidated ... it’s all just Ruby Friday, August 9, 13
- 25. USE GEM... Friday, August 9, 13
- 26. USE GEM... $ gem env Friday, August 9, 13
- 27. USE GEM... RubyGems Environment: - RUBYGEMS VERSION: 1.8.25 - RUBY VERSION: 1.9.3 (2012-11-10 patchlevel 327) [x86_64-darwin11.4.2] - INSTALLATION DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fas - RUBY EXECUTABLE: /Volumes/Valinor/Users/evan/.rvm/rubies/ruby-1.9.3-p327-fast/bin/ - EXECUTABLE DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327- fast@tracks/bin - RUBYGEMS PLATFORMS: - ruby - x86_64-darwin-11 - GEM PATHS: - /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks - /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@global - GEM CONFIGURATION: $ gem env Friday, August 9, 13
- 28. USE GEM... RubyGems Environment: - RUBYGEMS VERSION: 1.8.25 - RUBY VERSION: 1.9.3 (2012-11-10 patchlevel 327) [x86_64-darwin11.4.2] - INSTALLATION DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fas - RUBY EXECUTABLE: /Volumes/Valinor/Users/evan/.rvm/rubies/ruby-1.9.3-p327-fast/bin/ - EXECUTABLE DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327- fast@tracks/bin - RUBYGEMS PLATFORMS: - ruby - x86_64-darwin-11 - GEM PATHS: - /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks - /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@global - GEM CONFIGURATION: $ gem env Friday, August 9, 13
- 29. USE GEM... RubyGems Environment: - RUBYGEMS VERSION: 1.8.25 - RUBY VERSION: 1.9.3 (2012-11-10 patchlevel 327) [x86_64-darwin11.4.2] - INSTALLATION DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fas - RUBY EXECUTABLE: /Volumes/Valinor/Users/evan/.rvm/rubies/ruby-1.9.3-p327-fast/bin/ - EXECUTABLE DIRECTORY: /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327- fast@tracks/bin - RUBYGEMS PLATFORMS: - ruby - x86_64-darwin-11 - GEM PATHS: - /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks - /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@global - GEM CONFIGURATION: $ gem env $ cd /Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks Friday, August 9, 13
- 30. ASK RUBY YOUR QUESTIONS! Friday, August 9, 13
- 31. WHAT’S THIS VALUE? #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash # Return a new hash with all keys converted to symbols, as # long as they respond to +to_sym+. # # { 'name' => 'Rob', 'years' => '28' }.symbolize_keys # #=> { :name => "Rob", :years => "28" } def symbolize_keys dup.symbolize_keys! end alias_method :to_options, :symbolize_keys alias_method :to_options!, :symbolize_keys! # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. # Note that keys are NOT treated indifferently, meaning if you use strings for keys but assert symbols Friday, August 9, 13
- 32. WHAT’S THIS VALUE? #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash # Return a new hash with all keys converted to symbols, as # long as they respond to +to_sym+. # # { 'name' => 'Rob', 'years' => '28' }.symbolize_keys # #=> { :name => "Rob", :years => "28" } def symbolize_keys dup.symbolize_keys! end alias_method :to_options, :symbolize_keys alias_method :to_options!, :symbolize_keys! # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. # Note that keys are NOT treated indifferently, meaning if you use strings for keys but assert symbols Friday, August 9, 13
- 33. WHAT’S THIS VALUE? #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash # Return a new hash with all keys converted to symbols, as # long as they respond to +to_sym+. # # { 'name' => 'Rob', 'years' => '28' }.symbolize_keys # #=> { :name => "Rob", :years => "28" } def symbolize_keys p self dup.symbolize_keys! end alias_method :to_options, :symbolize_keys alias_method :to_options!, :symbolize_keys! # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. # Note that keys are NOT treated indifferently, meaning if you Friday, August 9, 13
- 34. TOO MUCH OUTPUT! .{:client_id=>"24"} {"controller"=>"invoices", "action"=>"new"} .{:client_id=>"27"} {"controller"=>"invoices", "action"=>"new"} .{:client_id=>"30"} {"controller"=>"invoices", "action"=>"new"} .{:client_id=>"33"} {"controller"=>"invoices", "action"=>"new"} .{:client_id=>"37"} {"controller"=>"invoices", "action"=>"new"} .{:id=>"19"} {"id"=>"19", "controller"=>"invoices", "action"=>"edit"} .{:id=>"20"} {"id"=>"20", "controller"=>"invoices", "action"=>"edit"} {:controller=>"devise/ sessions", :action=>"new", :use_route=>"login", :only_path=>true} . {:invoice=>{:due_on=>"2013-05-14", :client_id=>"42", :notes=>"value for notes"}} Friday, August 9, 13
- 35. OUTPUT AND STOP #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash # Return a new hash with all keys converted to symbols, as # long as they respond to +to_sym+. # # { 'name' => 'Rob', 'years' => '28' }.symbolize_keys # #=> { :name => "Rob", :years => "28" } def symbolize_keys raise self # stop running! dup.symbolize_keys! end alias_method :to_options, :symbolize_keys alias_method :to_options!, :symbolize_keys! # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. # Note that keys are NOT treated indifferently, meaning if you Friday, August 9, 13
- 36. ADD A CONDITION #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash # Return a new hash with all keys converted to symbols, as # long as they respond to +to_sym+. # # { 'name' => 'Rob', 'years' => '28' }.symbolize_keys # #=> { :name => "Rob", :years => "28" } def symbolize_keys raise self if <some condition> dup.symbolize_keys! end alias_method :to_options, :symbolize_keys alias_method :to_options!, :symbolize_keys! # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. # Note that keys are NOT treated indifferently, meaning if you Friday, August 9, 13
- 37. KEEP TRACK OF LOCATION #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash # Return a new hash with all keys converted to symbols, as # long as they respond to +to_sym+. # # { 'name' => 'Rob', 'years' => '28' }.symbolize_keys # #=> { :name => "Rob", :years => "28" } def symbolize_keys p __FILE__, __LINE__ dup.symbolize_keys! end alias_method :to_options, :symbolize_keys alias_method :to_options!, :symbolize_keys! # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. # Note that keys are NOT treated indifferently, meaning if you Friday, August 9, 13
- 38. LABEL WITH LOCATION #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash # Return a new hash with all keys converted to symbols, as # long as they respond to +to_sym+. # # { 'name' => 'Rob', 'years' => '28' }.symbolize_keys # #=> { :name => "Rob", :years => "28" } def symbolize_keys p “#{__FILE__}:#{__LINE__}” => self dup.symbolize_keys! end alias_method :to_options, :symbolize_keys alias_method :to_options!, :symbolize_keys! # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. # Note that keys are NOT treated indifferently, meaning if you Friday, August 9, 13
- 39. TAG WITH A NAME #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash # Return a new hash with all keys converted to symbols, as # long as they respond to +to_sym+. # # { 'name' => 'Rob', 'years' => '28' }.symbolize_keys # #=> { :name => "Rob", :years => "28" } def symbolize_keys p :broken_hash => self dup.symbolize_keys! end alias_method :to_options, :symbolize_keys alias_method :to_options!, :symbolize_keys! # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. # Note that keys are NOT treated indifferently, meaning if you Friday, August 9, 13
- 40. CLEAN IT UP #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash # Return a new hash with all keys converted to symbols, as # long as they respond to +to_sym+. # # { 'name' => 'Rob', 'years' => '28' }.symbolize_keys # #=> { :name => "Rob", :years => "28" } def symbolize_keys require ‘pp’ pp self dup.symbolize_keys! end alias_method :to_options, :symbolize_keys alias_method :to_options!, :symbolize_keys! # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. Friday, August 9, 13
- 41. OTHER USEFUL QUESTIONS Friday, August 9, 13
- 42. HOW DID I GET HERE? Friday, August 9, 13
- 43. HOW DID I GET HERE? #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash # Return a new hash with all keys converted to symbols, as # long as they respond to +to_sym+. # # { 'name' => 'Rob', 'years' => '28' }.symbolize_keys # #=> { :name => "Rob", :years => "28" } def symbolize_keys require ‘pp’ pp caller[0..10] dup.symbolize_keys! end alias_method :to_options, :symbolize_keys alias_method :to_options!, :symbolize_keys! # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. Friday, August 9, 13
- 44. “DOES THIS FILE LOAD?” module SomePossiblyIncludedMonkeyPatch def change_important_class_behavior # ... # ... end def obscure_some_key_method # ... # ... end end Friday, August 9, 13
- 45. “DOES THIS FILE LOAD?” raise “Yes, somebody required me” module SomePossiblyIncludedMonkeyPatch def change_important_class_behavior # ... # ... end def obscure_some_key_method # ... # ... end end Friday, August 9, 13
- 46. “WHY DIDN’T THIS FILE LOAD?” Friday, August 9, 13
- 47. “WHY DIDN’T THIS FILE LOAD?” require ‘some_library/some_junk’ module MyNiftyBehavior def stuff Friday, August 9, 13
- 48. “WHY DIDN’T THIS FILE LOAD?” require ‘some_library/some_junk’ module MyNiftyBehavior def stuff $ rspec spec/ No such file to load -- some_library/some_junk (LoadError) Friday, August 9, 13
- 49. “WHY DIDN’T THIS FILE LOAD?” require ‘some_library/some_junk’ module MyNiftyBehavior def stuff $ rspec spec/ No such file to load -- some_library/some_junk (LoadError) ... pretty print the search path Friday, August 9, 13
- 50. “WHY DIDN’T THIS FILE LOAD?” require ‘some_library/some_junk’ module MyNiftyBehavior def stuff $ rspec spec/ No such file to load -- some_library/some_junk (LoadError) ... pretty print the search path require ‘pp’ pp $: require ‘some_library/some_junk’ module MyNiftyBehavior def stuff Friday, August 9, 13
- 51. “WHO REQUIRED ME?” module SomePossiblyIncludedMonkeyPatch def change_important_class_behavior # ... # ... end def obscure_some_key_method # ... # ... end end Friday, August 9, 13
- 52. “WHO REQUIRED ME?” p “Required By” => caller[0] module SomePossiblyIncludedMonkeyPatch def change_important_class_behavior # ... # ... end def obscure_some_key_method # ... # ... end end Friday, August 9, 13
- 53. WHAT IF YOU DON’T KNOW THE RIGHT QUESTION YET? Friday, August 9, 13
- 54. USE DEBUGGER! Friday, August 9, 13
- 55. YOUR GEMFILE source 'http://rubygems.org' gem 'rails', '3.2.12' gem 'rack', '~> 1.4.0' gem 'rake' gem "will_paginate" gem 'devise' group :development, :test do gem 'rspec' gem 'rspec-rails' gem 'factory_girl_rails' gem 'debugger' end Friday, August 9, 13
- 56. IN THE CODE class Hash # Return a new hash with all keys converted to symbols, as # long as they respond to +to_sym+. # # { 'name' => 'Rob', 'years' => '28' }.symbolize_keys # #=> { :name => "Rob", :years => "28" } def symbolize_keys debugger dup.symbolize_keys! end alias_method :to_options, :symbolize_keys alias_method :to_options!, :symbolize_keys! # Validate all keys in a hash match *valid keys, raising ArgumentError on a mismatch. # Note that keys are NOT treated indifferently, meaning if you use strings for keys but assert symbols Friday, August 9, 13
- 57. RUNNING IT Friday, August 9, 13
- 58. RUNNING IT $ rails server -u Development Server: Friday, August 9, 13
- 59. RUNNING IT $ rails server -u Development Server: $ rspec -d spec/ rSpec: Friday, August 9, 13
- 60. RUNNING IT Arbitrary Ruby script: $ rdebug <command> $ rdebug rake db:seed Friday, August 9, 13
- 61. WHO ARE YOU? #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash def symbolize_keys debugger dup.symbolize_keys! end Friday, August 9, 13
- 62. WHO ARE YOU? (rdb:1) eval dup.class #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash def symbolize_keys debugger dup.symbolize_keys! end Friday, August 9, 13
- 63. WHO ARE YOU? (rdb:1) eval dup.class Hash #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash def symbolize_keys debugger dup.symbolize_keys! end Friday, August 9, 13
- 64. WHO AM I? (rdb:1) eval self.class Friday, August 9, 13
- 65. WHO AM I? (rdb:1) eval self.class Hash Friday, August 9, 13
- 66. WHO CAN I CALL? (rdb:1) eval self.methods Friday, August 9, 13
- 67. WHO CAN I CALL? (rdb:1) eval self.methods [:specify, :class_variable_defined?, :public_class_method, :methods, :use_instantiated_fixtures=, :filtered_examples, :before_all_ivars, :should, :const_defined?, :untrust, :local_constant_names, :should_not, :capture, :module_eval, :instance_methods, :clone, :load_dependency, :to_json, :run_hook, :all_apply?, :share_examples_for, :include?, :redefine_method, :to_yaml, :respond_to?, :examples, :fail_fast?, :unloadable, :it_should_behave_like, :<=>, :instance_variable_defined?, :register, :acts_like?, :psych_yaml_as, :debug_method, :fixture_class_names, :let!, :render_views, :focus, :private_class_method, :delegate, :public_constant, :singleton_methods, :pretty_print_instance_variables, :attr_internal_writer, :use_instantiated_fixtures?, :matcher, :try, :tests, :as_json, :gem, :untrusted?, :controller_class, :pending, :parent, :silence, :class_eval, Friday, August 9, 13
- 68. WHO CAN I CALL? (rdb:1) eval self.methods.sort Friday, August 9, 13
- 69. WHO CAN I CALL? (rdb:1) eval self.methods.sort [:!, :!=, :!~, :<=>, :==, :===, :=~, :[], : []=, :__id__, :__send__, :`, :acts_like?, :all?, :any?, :as_json, :assert_valid_keys, :assoc, :binding_n, :blank?, :breakpoint, :capture, :chunk, :class, :class_eval, :clear, :clone, :collect, :collect_concat, :compare_by_identity, :compare_by_identity?, :count, :cycle, :dbg_print, :dbg_puts, :debugger, :deep_dup, :deep_merge, :deep_merge!, :deep_symbolize_keys, :default, :default=, :default_proc, :default_proc=, :define_singleton_method, :delete, :delete_if, :detect, :diff, :display, :drop, :drop_while, :dup, :duplicable?, :each, :each_cons, :each_entry, :each_key, :each_pair, :each_slice, :each_value, :each_with_index, :each_with_object, :empty?, :enable_warnings, :encode_json, :entries, :enum_for, :eql?, :equal?, :except, :except!, :exclude?, :extend, :extract!, :extractable_options?, :fetch, :find, :find_all, :find_index, Friday, August 9, 13
- 70. WHO CAN I CALL? (rdb:1) eval self.methods.grep(/merge/) Friday, August 9, 13
- 71. WHO CAN I CALL? (rdb:1) eval self.methods.grep(/merge/) [:deep_merge!, :reverse_merge!, :merge!, :merge, :deep_merge, :reverse_merge, :merge_resultset] Friday, August 9, 13
- 72. DEBUGGER HAS ‘PP’ BY DEFAULT Friday, August 9, 13
- 73. WHO DO YOU INCLUDE? (rdb:1) pp dup.class.included_modules Friday, August 9, 13
- 74. WHO DO YOU INCLUDE? (rdb:1) pp dup.class.included_modules [SimpleCov::HashMergeHelper, JSON::Ext::Generator::GeneratorMethods::Hash, Enumerable, RSpec::Steps::ClassMethods, JSON::Ext::Generator::GeneratorMethods::Object, ActiveSupport::Dependencies::Loadable, PP::ObjectMixin, Kernel] Friday, August 9, 13
- 76. AT THE COMMAND-LINE -H (show filename) -n (show line number) -r (recurse directories) -i (ignore case -- use carefully) $ grep -Hnir <pattern> <path> Friday, August 9, 13
- 77. USEFUL PATTERNS Friday, August 9, 13
- 78. USEFUL PATTERNS $ grep -Hnr “def *my_method” * Method definitions: Friday, August 9, 13
- 79. USEFUL PATTERNS $ grep -Hnr “def *my_method” * Method definitions: $ grep <stuff> | grep -v “ *#” Ignore comments: Friday, August 9, 13
- 80. ACK > GREP $ ack <pattern> Friday, August 9, 13
- 81. ACK > GREP Friday, August 9, 13
- 82. ACK > GREP •Looks only in programming files (ignores logs!) Friday, August 9, 13
- 83. ACK > GREP •Looks only in programming files (ignores logs!) •brew install ack Friday, August 9, 13
- 84. ACK > GREP •Looks only in programming files (ignores logs!) •brew install ack •Configurable via .ackrc Friday, August 9, 13
- 85. ACK > GREP •Looks only in programming files (ignores logs!) •brew install ack •Configurable via .ackrc •https://gist.github.com/IdahoEv/5580770 Friday, August 9, 13
- 86. BUT THEN THIS... Friday, August 9, 13
- 87. BUT THEN THIS... $ ack “def *my_method” Friday, August 9, 13
- 88. BUT THEN THIS... $ ack “def *my_method” $ Friday, August 9, 13
- 89. BUT THEN THIS... $ ack “def *my_method” $ ... it doesn’t exist Friday, August 9, 13
- 90. BUT THEN THIS... $ ack “def *my_method” $ ... it doesn’t exist Friday, August 9, 13
- 91. BECAUSE RUBY LETS YOU DO THIS... Friday, August 9, 13
- 92. module RSpec module Core class ExampleGroup class << self delegate_to_metadata :described_class, :file_path alias_method :display_name, :description alias_method :describes, :described_class # @private # @macro [attach] define_example_method # @param [String] name # @param [Hash] extra_options # @param [Block] implementation def self.define_example_method(name, extra_options={}) module_eval(<<-END_RUBY, __FILE__, __LINE__) def #{name}(desc=nil, *args, &block) options = build_metadata_hash_from(args) options.update(:pending => RSpec::Core::Pending::) unless block options.update(#{extra_options.inspect}) examples << RSpec::Core::Example.new(self, desc, options, block) examples.last end END_RUBY end define_example_method :example define_example_method :it define_example_method :specify define_example_method :focus, :focused => true, :focus => true Friday, August 9, 13
- 93. module RSpec module Core class ExampleGroup class << self delegate_to_metadata :described_class, :file_path alias_method :display_name, :description alias_method :describes, :described_class # @private # @macro [attach] define_example_method # @param [String] name # @param [Hash] extra_options # @param [Block] implementation def self.define_example_method(name, extra_options={}) module_eval(<<-END_RUBY, __FILE__, __LINE__) def #{name}(desc=nil, *args, &block) options = build_metadata_hash_from(args) options.update(:pending => RSpec::Core::Pending::) unless block options.update(#{extra_options.inspect}) examples << RSpec::Core::Example.new(self, desc, options, block) examples.last end END_RUBY end define_example_method :example define_example_method :it define_example_method :specify define_example_method :focus, :focused => true, :focus => true Friday, August 9, 13
- 95. WHO DO YOU INCLUDE? #activesupport-3.2.12/lib/active_support/core_ext/hash class Hash # ... snip ... def symbolize_keys debugger dup.symbolize_keys! end # ... snip ... end Friday, August 9, 13
- 96. WHO DO YOU INCLUDE? (rdb:1) pp self.class.included_modules [SimpleCov::HashMergeHelper, JSON::Ext::Generator::GeneratorMethods::Hash, Enumerable, RSpec::Steps::ClassMethods, JSON::Ext::Generator::GeneratorMethods::Object, ActiveSupport::Dependencies::Loadable, PP::ObjectMixin, Kernel] Friday, August 9, 13
- 97. WHO DEFINED THAT METHOD? (rdb:1) eval self.method(:merge_resultset).owner Friday, August 9, 13
- 98. WHO DEFINED THAT METHOD? (rdb:1) eval self.method(:merge_resultset).owner SimpleCov::HashMergeHelper Friday, August 9, 13
- 99. BUT DEFINED WHERE? (rdb:1) pp self.method(:merge_resultset).source_location Friday, August 9, 13
- 100. BUT DEFINED WHERE? (rdb:1) pp self.method(:merge_resultset).source_location ["~/evan/.rvm/gems/ruby-1.9.3-p327-fast@tracks/gems/ simplecov-0.5.4/lib/simplecov/merge_helpers.rb", 25] Friday, August 9, 13
- 101. EVEN WORKS ON DYNAMIC METHODS! Friday, August 9, 13
- 102. EVEN WORKS ON DYNAMIC METHODS! #/spec/controllers/invoices_controller_spec.rb require 'spec_helper' describe InvoicesController do debugger describe "as an admin" do before(:each) do authenticate(:admin) Friday, August 9, 13
- 103. EVEN WORKS ON DYNAMIC METHODS! (rdb:1) eval method(:example).source_location Friday, August 9, 13
- 104. EVEN WORKS ON DYNAMIC METHODS! (rdb:1) eval method(:example).source_location ["/Volumes/Valinor/Users/evan/.rvm/gems/ruby-1.9.3-p327- fast@tracks/gems/rspec-core-2.13.1/lib/rspec/core/ example_group.rb", 61] Friday, August 9, 13
- 105. WHERE TO LOOK NEXT •Pry (https://github.com/pry/pry) •API Docs: http://www.ruby-doc.org/core-2.0 • Kernel • Module • Method Friday, August 9, 13
- 106. Thanks! Evan Dorn Founder, Logical Reality Design http://lrdesign.com [email protected] @idahoev Text Friday, August 9, 13