Скачать или смотреть Fixing Server Error When Updating Custom Module from Odoo-10 to Odoo-15

Discover how to troubleshoot the `Server Error` encountered during the update of a custom module from Odoo v10 to v15. This guide provides step-by-step instructions to solve the issue effectively!
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Troubleshooting the Server Error When Updating a Custom Module from Odoo-10 to Odoo-15

Updating a custom module from Odoo v10 to Odoo v15 can be an exciting endeavor! However, navigating the complexities of Odoo’s updates is not always smooth sailing. Many developers encounter various challenges, and one common problem is a server error that arises during the installation process of the module. In this guide, we will delve into the nature of this error and provide you with a clear, structured approach to resolve it.

Understanding the Error

In the situation described, a developer attempts to install a custom module only to be met with a KeyError, specifically indicating that an external ID (web.assets_backend) was not found in the system. This is accompanied by a lengthy traceback of errors indicating a failed attempt to load assets, which are essential for the module's functionality. Here’s a brief overview of the key points from the error message:

KeyError: Indicates that a required external ID cannot be found.

ValueError: Another layer of issue surrounding the missing external ID during the lookup in the cache.

ParseError: Results from issues within the XML parsing during the installation stage.

These underlying errors signal a larger issue relating to how assets have been organized in the updated version of Odoo.

The Solution Explained

Step 1: Recognizing Changes in Odoo v15

From version 15 onwards, Odoo has made significant changes in how assets are managed. Specifically, the use of views like web.assets_backend and web.assets_frontend has been removed. Thus, any existing calls that reference these views in your custom module need to be revised or removed altogether.

Step 2: Modify Your Module’s Manifest File

To resolve the server error, follow these structured steps:

Access Your Module’s Manifest File: Locate the __manifest__.py file in your custom module directory.

Update the Asset Definitions: Ensure that your assets are defined in the assets section properly, as follows:

[[See Video to Reveal this Text or Code Snippet]]

Comment Out the Call to Deprecated Views: Navigate to your XML views file (like views/assets.xml) and comment out or remove any references to web.assets_backend. This is a crucial step because keeping these references can cause conflicts and lead to parsing errors.

For example, you might have something like this in your XML file:

[[See Video to Reveal this Text or Code Snippet]]

Change it to:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Test the Module Installation

After making the discussed changes, save your files and restart your Odoo server. Next, attempt to reinstall your custom module. This time, you should see that the Server Error is resolved, allowing the module to function correctly without additional parsing errors.

Conclusion

Updating a custom module from Odoo v10 to v15 can lead to initial hurdles, but understanding the changes in asset management and revising your module's structure accordingly can help you overcome these issues effectively. If you need further assistance, feel free to reach out for help!

By following the steps outlined in this guide, you should not only troubleshoot the initial errors but also gain a better understanding of Odoo’s evolving framework. Happy coding!