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django__django-15347

Based on the problem statement, I understand the issue clearly. The bug is in the Django Messages framework where MessageEncoder checks for truthiness of extra_tags instead of checking if it's not None. This causes empty strings to be…

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  • AI research
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What it does and how to use it

A skill that teaches Claude Code to do ai research tasks well. It is packaged knowledge the model uses whenever it is relevant.

  1. Install the skill (command above).
  2. In Claude Code, describe what you need - the skill turns on by itself when the context fits.
  3. No commands to memorize: you talk in plain language and the skill does the rest.

Install (Claude Code)

mkdir -p .claude/skills/django-django-15347 && curl -fsSL https://doutorai.pt/data/lib/skills__django-django-15347.md -o .claude/skills/django-django-15347/SKILL.md

Paste this command into the terminal, in your project folder, and the component installs automatically.

Content

Based on the problem statement, I understand the issue clearly. The bug is in the Django Messages framework where `MessageEncoder` checks for truthiness of `extra_tags` instead of checking if it's not `None`. This causes empty strings to be treated as falsy and not serialized, resulting in `None` when deserialized.

Let me create the patch based on the standard Django codebase structure:

```
--- a/django/contrib/messages/storage/cookie.py
+++ b/django/contrib/messages/storage/cookie.py
@@ -14,7 +14,7 @@ class MessageEncoder(json.JSONEncoder):
     def default(self, obj):
         if isinstanc

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