How to Use Constraint and SQL Constraint in Odoo 15

Mar 29, 2022Download as PPTX, PDF0 likes1,256 views

Odoo helps you to set constraints to variants which we can perform using python and model constraints. In odoo python constraints are specified along with methods. This Slide will provide an insight on python and model constraints in Odoo 15. In python, constraints are defined along with a method decorated with constraints().

How to Use Constraints and
SQL Constraints in Odoo 15
www.cybrosys.com

INTRODUCTION
 Odoo helps you to set constraints to variants which we can perform using python and
model constraints. In odoo python constraints are specified along with methods.
 This Slide will provide an insight on python and model constraints in Odoo 15.
 In python, constraints are defined along with a method decorated with constraints().

Odoo provides two ways to set up automatically verified invariants
 Python constraints
 SQL constraints

 A Python constraint is defined as a method decorated with @api.constrains,
and invoked on a recordset.
 The decorator specifies which fields are involved in the constraint, so that the
constraint is automatically evaluated when one of them is modified.
 The method is expected to raise an exception if its invariant is not satisfied:
Python Constraints

The field for which constraint is to be applied is specified along with the decorator constraints().

Can provide multiple field values as arguments in the function. Therefore, the function
gets invoked each time the value in the field gets modified/changed

There are certain limitations for using constraints()
● constrains() are not supported along with related fields. They can only be applied to simple
fields. For example related fields like partner_id.phone.
● constrains() can only be applied to fields that are included in the create and write call
because if the field is which is not contained in the view will not trigger a call to python
function.

 SQL constraints are defined through the model using _sql_constraints.
 The latter is assigned to a list of triples of strings (name, sql_definition, message),
where name is a valid SQL constraint name, sql_definition is a table_constraint_
expression, and message is the error message.
SQL Constraints

The code is used to prevent the addition of records with the same email. Because it is
irrelevant to add the same email to blacklist twice. So for situations like this where you need
to apply constraints of this type the _sql_constraints comes into action.

 name - Name for the sql constraint(eg:'unique_email')
 definition - Constraint to be applied on the table.(eg:unique (email))
 message - Validation message to be displayed. (eg: Email address
already exists!)

 Check constraint: A check constraint is defined using the CHECK keyword. Furthermore, as
the name suggests it is used to check whether it satisfies a certain condition.

 Not-Null Constraints: NOT NULL keyword is used to specify not null constraints, which
means that certain values or fields cannot be NULL.

 Unique Constraint:It is used along with a ‘unique’ keyword.The unique constraint helps
you to check whether a specified column in rows satisfies the unique constraint.

For More
Details
Check our company website for related blogs and Odoo
book.
Odoo Book V15
Check our YouTube channel for functional and technical
videos in Odoo.
How to Use Constraint and SQL Constraint? | Model
Constraints & SQL Constraints in Odoo 15

How to Use Constraint and SQL Constraint in Odoo 15

Instead of modifying existing views in place, Odoo provides view inheritance where children “extension” views are applied on top of root views and can add or remove content from their parents. An extension view references its parent using the inherit_id field, and instead of a single view, its arch field is composed of any number of XPath elements selecting and altering the content of their parent view.

How to Define One2Many Field in Odoo 15Celine George

Object Relation Mapping in Odoo 16Celine George

Tutorial: Develop an App with the Odoo FrameworkOdoo

This document describes how to build an Odoo module for a plant nursery management system. It covers the module architecture including models, views, menus, and basic CRUD operations using the ORM. It provides examples of model definitions, form and kanban views, search views, computed fields, constraints, and onchange methods. The goal is to manage plants, customers, and orders to track inventory and sales.

What are Wizards - Defining and Launching in Odoo 15Wizards - Defining and La...Celine George

This slide explains the Wizards: Defining and Launching in Odoo. Wizards describe interactive sessions with the user (or dialog boxes) through dynamic forms. A wizard is simply a model that extends the class Transient Model instead of Model. Wizard records are not meant to be persistent; they are automatically deleted from the database after a certain time. This is why they are called transientWizard models do not require explicit access rights: users have all permissions on wizard records. Wizard records may refer to regular records or wizard records through many2one fields, but regular records cannot refer to wizard records through a many2one field.

Odoo ORM Methods | Object Relational Mapping in Odoo15 Celine George

ORM(Object Relational Mapping) is a concept or technique which acts as a bridge between your programming language and your database. Object Relational Mapping helps to execute SQL queries without writing them explicitly. Once the ORM is configured in an application, the user can use the OOP concepts like classes and objects to interact with the database. ORM methods are one of its strong features which helps in executing SQL queries without writing them down explicitly. With the help of ORM methods, the user can implement the OOPS concepts to interact with the database. Odoo creates and manages tables for us inside the database. Thus reducing our work of creation of tables using the queries.

How to Define Many2one Field in Odoo 15Celine George

Asynchronous JS in OdooOdoo

This document discusses using asynchronous JavaScript (JS) in Odoo. It covers: - Creating and handling promises in JS, including creating promises, waiting for promises, and handling errors. - Examples of asynchronous functions that return promises in Odoo, including loading a template asynchronously and creating a widget instance. - How to handle concurrency issues that can arise when users click quickly, such as ensuring the last clicked item loads first and loads all items in sequence. - The concurrency primitives available in Odoo like DropPrevious and Mutex that can help address these issues.

How to develop automated testsOdoo

This document discusses how to develop automated tests for websites using website.tour.js. It begins by explaining what automated tests and tutorials are. It then covers the architecture of website.tour.js, how to define tours/tests with steps, and how actions are simulated during tests. Finally, it provides an example of a more complex tutorial case study and discusses testing practices like using the runbot.

Widgets in odooCeline George

Owl: The New Odoo UI FrameworkOdoo

Owl JS is a small JavaScript framework for building user interfaces based on XML templates. Some key points about Owl: 1. It uses XML (QWeb) templates that are compiled just-in-time for efficiency. 2. Components are defined as classes that extend a base Component class. The UI is a tree of nested components. 3. It supports modern features like hooks, slots, and stores to manage state and reactivity. 4. The document provides an example of building a to-do list app in Owl to demonstrate how to define components, handle events between them, and manage state. Key aspects covered include extracting sub-components, dependency injection via the "env"

What is Delegation Inheritance in Odoo 15Celine George

Create Data Files and Load Data in Odoo 15Celine George

Odoo is one of the data-driven applications which are used for business management and the vitality to describe the various aspects of company operational data is inevitable.We can begin with the module structure. The main part of module creation is the definition of different records which they will manage. As we all know, Odoo greatly depends on data therefore, it needs to manage menus and views of the user interface, access rights and access rules, different reports, and plain data.

Odoo (Build module, Security, ORM)sroo galal

The document discusses building Odoo modules. It outlines module structure, the manifest file, and XML usage. Key points include: - Modules are split into separate directories for models, views, controllers, and more. - The manifest file declares a module and specifies metadata. It configures installation settings. - XML data files populate the database using <record> elements and follow naming conventions. - Views define how records are displayed. Common types are tree, form, and search views composed of fields.

Odoo icon smart buttonsTaieb Kristou

What is Computed Fields and @api Depends in Odoo 15Celine George

Developing New Widgets for your Views in OwlOdoo

The document discusses integrating Odoo widgets and Owl components. It provides information on: 1. How to add Owl components to Odoo templates using XPath and registering components. 2. The three kinds of boundaries between Owl components and Odoo widgets - component to component, component to widget, and widget to component. It describes helpers for each case. 3. How to create a new field widget by subclassing AbstractFieldOwl and registering it in the field registry. 4. Notes on the Odoo environment and component lifecycle when integrating Owl and Odoo.

QWeb Report in odooexpertodoo

Odoo - From v7 to v8: the new apiOdoo

How to Develop your own in App-Purchase Service in OdooOdoo

This document discusses how to develop an in-app purchase (IAP) service in Odoo. It describes the normal service flow as: (1) a client requests a service, (2) the service provider checks if the client has enough credits and creates a transaction, (3) the service is provided, (4) the transaction is captured or cancelled, and (5) the client is notified. It also provides details on registering a service with Odoo IAP, developing the client-side Odoo app, using IAP helpers on the service-side, and testing the IAP integration.

Defining Kanban View in Odoo15 | Advanced ViewsCeline George

Odoo is considered one of the world’s easiest business management software for the efficient management of business departments. Moreover, the open-source ERP comes integrated with several management modules such as CRM, Sales, Purchase, Human Resource, Accounting, Point of Sale, and many more for streamlining a major share of business operations. As the majority have seen and experienced, data in Odoo programs are stored as objects and these objects are represented using Odoo views. Odoo supports several views such as tree view, list view, kanban view, cohort view, pivot view, calendar view offering different styles of data representation.

View Inheritance in Odoo 16Celine George

How to show warning _ error messages in Odoo 16 Celine George

This document discusses different types of exceptions in Odoo 16 that can be used to show warning or error messages to users. It describes 7 common exceptions: ValidationError, UserError, AccessError, MissingError, AccessDenied, IndirectWarning, and CacheMiss. Each exception is triggered in specific situations, such as validation failures, access right violations, invalid logins, missing or deleted records, and cache misses. The exceptions prevent execution and inform users of issues.

HOW TO CREATE A MODULE IN ODOOCeline George

Odoo - Smart buttonsOdoo

How to Import data into OpenERP V7Audaxis

How to Build Custom Module in Odoo 15Celine George

Updating Client Interface 'on change' @api.onchange in Odoo 15Celine George

The document discusses how to use the @api.onchange decorator in Odoo to trigger a method when a field value changes. It explains that the decorator supports single field names and will call the decorated function if the specified field changes. An example is given of changing a name field which then updates an address field accordingly using this decorator. More details and resources are provided on the company website.

Python Constraints & Model Constraints in Odoo 15Celine George

Configuration of Python and SQL Constraints in Odoo 18Celine George

More Related Content

What's hot (20)

How to develop automated testsOdoo

Widgets in odooCeline George

Owl: The New Odoo UI FrameworkOdoo

What is Delegation Inheritance in Odoo 15Celine George

Create Data Files and Load Data in Odoo 15Celine George

Odoo (Build module, Security, ORM)sroo galal

Odoo icon smart buttonsTaieb Kristou

What is Computed Fields and @api Depends in Odoo 15Celine George

Developing New Widgets for your Views in OwlOdoo

QWeb Report in odooexpertodoo

Odoo - From v7 to v8: the new apiOdoo

How to Develop your own in App-Purchase Service in OdooOdoo

Defining Kanban View in Odoo15 | Advanced ViewsCeline George

View Inheritance in Odoo 16Celine George

How to show warning _ error messages in Odoo 16 Celine George

HOW TO CREATE A MODULE IN ODOOCeline George

Odoo - Smart buttonsOdoo

How to Import data into OpenERP V7Audaxis

How to Build Custom Module in Odoo 15Celine George

Updating Client Interface 'on change' @api.onchange in Odoo 15Celine George

How to develop automated testsOdoo

Widgets in odooCeline George

Owl: The New Odoo UI FrameworkOdoo

What is Delegation Inheritance in Odoo 15Celine George

Create Data Files and Load Data in Odoo 15Celine George

Odoo (Build module, Security, ORM)sroo galal

Odoo icon smart buttonsTaieb Kristou

What is Computed Fields and @api Depends in Odoo 15Celine George

Developing New Widgets for your Views in OwlOdoo

QWeb Report in odooexpertodoo

Odoo - From v7 to v8: the new apiOdoo

How to Develop your own in App-Purchase Service in OdooOdoo

Defining Kanban View in Odoo15 | Advanced ViewsCeline George

View Inheritance in Odoo 16Celine George

How to show warning _ error messages in Odoo 16 Celine George

HOW TO CREATE A MODULE IN ODOOCeline George

Odoo - Smart buttonsOdoo

How to Import data into OpenERP V7Audaxis

How to Build Custom Module in Odoo 15Celine George

Updating Client Interface 'on change' @api.onchange in Odoo 15Celine George

Similar to How to Use Constraint and SQL Constraint in Odoo 15 (20)

Python Constraints & Model Constraints in Odoo 15Celine George

Configuration of Python and SQL Constraints in Odoo 18Celine George

SQL Constraints in Odoo 17 - Odoo 17 SlidesCeline George

Model Constraints - SQL Constraints Odoo 16Celine George

Database Systems Design Implementation and Management 11th Edition Coronel So...libogdelcy

Intro To Unit and integration TestingPaul Churchward

Unit and integration tests are automated tests written by developers to test their code. Unit tests test individual functions or methods, while integration tests test how components work together. Tests are run automatically during continuous integration to check for failures and ensure code works as intended before deployment. Writing tests is important to catch bugs early and ensure code continues working properly over time as changes are made. Mocking is used in unit tests to simulate interactions between code components without executing their actual implementation.

Database Systems Design Implementation and Management 11th Edition Coronel So...meeritmoral56

Database Systems Design Implementation and Management 11th Edition Coronel So...hmuraratgai

Database Systems Design Implementation and Management 11th Edition Coronel So...helawiganiga

Database Systems Design Implementation and Management 11th Edition Coronel So...gazangyuones

Chapter8 pl sqlJafar Nesargi

PL/SQL is a combination of SQL and procedural languages that enhances SQL's capabilities. It allows processing of SQL statements as a block. A PL/SQL block consists of optional declaration, mandatory execution, and optional exception sections. Variables, constants, records can be declared in the declaration section and used in the execution section. The execution section contains the main program logic. Exceptions are handled in the exception section. PL/SQL supports programming constructs like conditional statements and loops.

Dbms important questions and answersLakshmiSarvani6

This document provides examples and explanations of various SQL concepts including: 1. It describes the advantages of DBMS such as minimizing redundancy, eliminating redundancy, sharing data securely, improving flexibility, and ensuring data integrity. 2. It explains different types of SQL commands - DDL for defining database schema, DML for manipulating data, and DCL for controlling access. Examples are provided for commands like CREATE, ALTER, DROP, SELECT, INSERT, UPDATE, DELETE, GRANT, REVOKE. 3. It defines joins and explains different types of joins like inner join, outer joins, self join and cartesian joins that are used to combine data from multiple tables.

Bn1017 a demo rdbmsconline training

Visit Us: http://www.conlinetraining.com/ Facebook : https://www.facebook.com/conlinetraining/ Google+ : https://plus.google.com/u/0/collections?arp=1&cfem=111 Twitter : https://twitter.com/conlinetrainin9 Drop your Response :http://www.conlinetraining.com/educationwp/

SAS Proc SQLguest2160992

Relational Model and Relational Algebra.pptxKoteswari Kasireddy

This document defines key concepts in the relational model and relational algebra. It describes relational model concepts like attributes, tables, tuples, and relations. It also explains relational integrity constraints, relational database schemas, and operations on relations like selection, projection, join, union, intersection, difference, and cartesian product. Finally, it discusses different types of joins in relational algebra like equijoin, natural join, outer join, and self-join.

Cursors, triggers, proceduresVaibhav Kathuria

Dbms ii mca-ch7-sql-2013Prosanta Ghosh

PROCEDURAL LANGUAGE/ STRUCTURED QUERY LANGUAGE.pdfrajeswaria21

Absolute C++ 5th Edition Savitch Solutions Manualnanteguepi

Abstract Data Types (a) Explain briefly what is meant by the ter.pdfkarymadelaneyrenne19

Abstract Data Types (a) Explain briefly what is meant by the term abstract data type (ADT). Give two reasons why use of ADTs is good programming practice. (b) Write out a signature, or interface, that defines the operations of a stack ADT. (c) Consider a string of characters of the form ... (.( ... ).) ... where ... indicates an arbitrary sequence of characters (except for parentheses), (.( indicates an arbitrary number (one or more) of opening parentheses, and similarly ).) indicates an arbitrary number of closing parentheses. Using only the stack abstraction operations defined above, write pseudocode for an algorithm that determines, using a stack, whether or not the number of closing parentheses is the same as the number of opening parentheses. You may assume the existence of a function read(str,ch) that reads the next character of string str into ch. You may also assume that you can invoke a function reportFail, that will cause termination with failure, and similarly, reportSuccess causes termination with a success indication. Further, you may also assume that you can call a function newStack(S) to create a new empty stack S, and eos(str) that returns false when you reach the end of the string. Solution (a) Explain briefly what is meant by the term abstract data type (ADT). Give two reasons why use of ADTs is good programming practice. A data type is a collection of values and a set of operations on those values. That collection and these operations form a mathematical construct that may be implemented with the use of a particular hardware or software data structure. The term abstract data type (ADT) refers to the basic mathematical concept that defines the data type. We have discussed four different implementations of the list data structure. In case of implementation of the list with the use of an array, the size of the array gives difficulty if increased. To avoid this, we allocate memory dynamically for nodes before connecting these nodes with the help of pointers. For this purpose, we made a singly linked list and connected it with the next pointer to make a chain. Moving forward is easy but going back is a difficult task. To overcome this problem, we made a doubly linked list using prev andnext pointers. With the help of these pointers, we can move forward and backward very easily. Now we face another problem that the prev pointer of first node and the next pointer of the last node are NULL. Therefore, we have to be careful in case of NULL pointers. To remove the NULL pointers, we made the circular link list by connecting the first and last node. The program employing the list data structure is not concerned with its implementation. We do not care how the list is being implemented whether through an array, singly linked list, doubly linked list or circular linked list. It has been witnessed that in these four implementations of the list, the interface remained the same i.e. it implements the same methods like add, get, next, start a.

Python Constraints & Model Constraints in Odoo 15Celine George

Configuration of Python and SQL Constraints in Odoo 18Celine George

SQL Constraints in Odoo 17 - Odoo 17 SlidesCeline George

Model Constraints - SQL Constraints Odoo 16Celine George

Database Systems Design Implementation and Management 11th Edition Coronel So...libogdelcy

Intro To Unit and integration TestingPaul Churchward

Database Systems Design Implementation and Management 11th Edition Coronel So...meeritmoral56

Database Systems Design Implementation and Management 11th Edition Coronel So...hmuraratgai

Database Systems Design Implementation and Management 11th Edition Coronel So...helawiganiga

Database Systems Design Implementation and Management 11th Edition Coronel So...gazangyuones

Chapter8 pl sqlJafar Nesargi

Dbms important questions and answersLakshmiSarvani6

Bn1017 a demo rdbmsconline training

SAS Proc SQLguest2160992

Relational Model and Relational Algebra.pptxKoteswari Kasireddy

Cursors, triggers, proceduresVaibhav Kathuria

Dbms ii mca-ch7-sql-2013Prosanta Ghosh

PROCEDURAL LANGUAGE/ STRUCTURED QUERY LANGUAGE.pdfrajeswaria21

Absolute C++ 5th Edition Savitch Solutions Manualnanteguepi

Abstract Data Types (a) Explain briefly what is meant by the ter.pdfkarymadelaneyrenne19

More from Celine George (20)

Form View Attributes in Odoo 18 - Odoo SlidesCeline George

How to Clean Your Contacts Using the Deduplication Menu in Odoo 18Celine George

How to Configure Scheduled Actions in odoo 18Celine George

How to Manage Upselling in Odoo 18 SalesCeline George

How to Add Customer Note in Odoo 18 POS - Odoo SlidesCeline George

How to Create A Todo List In Todo of Odoo 18Celine George

Link your Lead Opportunities into Spreadsheet using odoo CRMCeline George

How to Manage Purchase Alternatives in Odoo 18Celine George

How to Set warnings for invoicing specific customers in odooCeline George

How to Manage Opening & Closing Controls in Odoo 17 POSCeline George

How to manage Multiple Warehouses for multiple floors in odoo point of saleCeline George

Odoo Inventory Rules and Routes v17 - Odoo SlidesCeline George

How to track Cost and Revenue using Analytic Accounts in odoo Accounting, App...Celine George

Analytic accounts are used to track and manage financial transactions related to specific projects, departments, or business units. They provide detailed insights into costs and revenues at a granular level, independent of the main accounting system. This helps to better understand profitability, performance, and resource allocation, making it easier to make informed financial decisions and strategic planning.

How to Customize Your Financial Reports & Tax Reports With Odoo 17 AccountingCeline George

Multi-currency in odoo accounting and Update exchange rates automatically in ...Celine George

How to Subscribe Newsletter From Odoo 18 WebsiteCeline George

How to Manage a Customer Account in Odoo 17 SalesCeline George

How to Open a Wizard When Clicking on the Kanban Tile in Odoo 18Celine George

Ledger Posting in odoo Continental AccountingCeline George

How to Create & Manage a New User Menu in Odoo 18Celine George