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By: Dilshad A

An Overview of Odoo OWL Utils Patch & PatchMixin Functions

Technical Odoo 16

Odoo is a powerful open-source business management software that offers a wide range of features and modules to help streamline various business processes. One of the key strengths of Odoo is its flexibility and extensibility, allowing developers to customize and enhance the system according to specific requirements. In this blog post, we will explore the Odoo OWL Utils patch and the PatchMixin functions, two essential tools that contribute to making Odoo development more efficient and effective. 

Understanding the OWL Utils Patch:

The OWL (Odoo Web Library) Utils patch is a valuable addition to Odoo's framework, specifically designed to facilitate front-end development. It provides a set of utilities and enhancements to the standard Odoo web client, allowing developers to extend and modify its behavior effortlessly. The OWL Utils patch builds upon the OWL framework and simplifies the process of customizing Odoo's frontend components.

Key Benefits of the OWL Utils Patch:

Enhanced UI customization: The OWL Utils patch provides additional methods and classes that make it easier to modify the appearance and behavior of Odoo's web interface. This empowers developers to create user-friendly and visually appealing UIs that align with specific business needs.

Improved code reusability: With the help of the OWL Utils patch, developers can create reusable frontend components, reducing redundant code and enhancing development efficiency.

Seamless integration with existing modules: The OWL Utils patch allows developers to integrate their customizations seamlessly with existing Odoo modules, ensuring a smooth and consistent user experience across the entire system.

Exploring PatchMixin Functions:

PatchMixin is a mixin class provided by the OWL Utils patch, which extends the functionality of Odoo's standard Mixin classes. It serves as a foundation for creating custom Mixin classes that can be applied to various components within the Odoo web client. PatchMixin functions enable developers to add new methods and behaviors to these components without directly modifying the core code.

Advantages of PatchMixin Functions:

Non-intrusive customization: By utilizing PatchMixin functions, developers can introduce custom behaviors to Odoo's components without altering the original codebase. This approach ensures easier maintenance and future compatibility with system updates.

Modular and reusable code: PatchMixin functions allow developers to encapsulate specific functionality into separate Mixin classes, making the code more organized, modular, and reusable.

Flexibility in extending functionalities: With PatchMixin functions, developers can extend the capabilities of existing Odoo components by adding new methods, modifying existing behavior, or even completely overriding default implementations.

Real-world Use Cases:

Customizing form views: Using PatchMixin functions, developers can enhance form views by adding validations, dynamic fields, or custom buttons that trigger specific actions.

Extending list views: PatchMixin functions enable developers to add additional columns, filters, or sorting options to list views, providing users with more comprehensive data analysis capabilities.

Enhancing user interactions: With PatchMixin functions, developers can introduce interactive features like drag-and-drop functionality, dynamic previews, or live updates to improve the overall user experience.

Here are a few examples of code snippets that demonstrate the usage of the OWL Utils patch and PatchMixin functions in Odoo:

Example of OWL Utils Patch

odoo.define('your_module.YourWidget', function (require) {
    "use strict";
    var core = require('web.core');
    var Widget = require('web.Widget');
    var utils = require('web.utils');
    var QWeb = core.qweb;
    var _t = core._t;
    var YourWidget = Widget.extend({
        template: 'your_module.your_widget_template',
        init: function (parent, options) {
            this._super.apply(this, arguments);
            // Your initialization code
start: function () {
            this._super.apply(this, arguments);
            // Your code to start the widget
        // Additional methods and properties for your widget
    core.patch(YourWidget, PatchMixin);
    return YourWidget;
Example of PatchMixin Functions:
odoo.define('your_module.PatchMixinExample', function (require) {
    "use strict";
    var core = require('web.core');
    var Mixins = require('web.mixins');
    var _t = core._t;
    var PatchMixinExample = Mixins.PatchMixin.extend({
        init: function (parent, options) {
            this._super.apply(this, arguments);
            // Your initialization code
        patchMethod: function () {
            // Your custom method implementation
        // Override existing method
        onButtonClicked: function () {
 this._super.apply(this, arguments);
            // Additional code to execute when the button is clicked
    return PatchMixinExample;
Remember to replace 'your_module' and 'your_widget_template' with your actual module name and template name, respectively.
The Odoo OWL Utils patch and PatchMixin functions empower developers to customize and extend Odoo's frontend components, allowing for enhanced user experiences and tailored business solutions. By leveraging these powerful tools, developers can streamline the development process, create reusable code, and maintain compatibility with future Odoo updates. With the flexibility provided by the OWL Utils patch and PatchMixin functions, the possibilities for customization in Odoo are endless, enabling businesses to adapt the software to their unique requirements.

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