Invalid filter: 'length_is' in Django 5.1.* after upgrade

[mohsensalare]

Hi

Bug Report: Invalid filter: 'length_is' in Django 5.1.1 after upgrade

Description:

After upgrading Django to version 5.1.1, I encountered the following error when attempting to use the length_is template filter:

Invalid filter: 'length_is'

Upon checking the Django 5.1 release notes, I found that the length_is filter has been removed. However, there is no deprecation warning or alternative solution mentioned in prior releases. This abrupt removal results in a template error without clear guidance for a fix.

Steps to Reproduce:

1. Upgrade Django to 5.1.1.
2. Use the length_is filter in a template:

   {% if my_list|length_is:5 %}

3. Load the template.

Expected Behavior:

A deprecation warning in earlier versions of Django or an alternative solution should be suggested before the filter's removal.

Actual Behavior:

The template fails to render with the error message:

Invalid filter: 'length_is'

Suggested Improvement:

Consider including a more informative error message regarding removed template filters, or suggest alternative approaches in the documentation for filters that are being deprecated.

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[app-generator]

Hello @mohsensalare

Please update to v1.0.11 and let us know if all is good.

TY!

[mohsensalare]

Hello @app-generator thank you after update everything is fine ✅