从Django 1.8.5迁移至1.11时django-hvad版本断言错误求助

Hey there! I’ve helped a few folks work through Django version migrations with django-hvad, so let’s get this sorted for you.

First, let’s break down the problem: The assertion error you’re hitting when upgrading to Django 1.10 almost certainly comes from django-hvad version incompatibility. Older versions of django-hvad don’t support Django 1.10+, so they include checks that throw errors when they detect a newer Django release.

Here’s how to fix this step by step:

1. Check your current django-hvad version #

First, confirm which version of hvad you’re running. Run this command in your virtual environment:

pip show django-hvad

If the version is below 2.0, that’s the issue—django-hvad 1.x only supports up to Django 1.9.

2. Upgrade django-hvad to a compatible version #

You’ll need a version of hvad that supports Django 1.10 and 1.11. The 2.1.x series of django-hvad is perfect here, as it supports Django 1.8 through 1.11. Run:

pip install django-hvad>=2.1.0

3. Follow Django’s recommended migration path #

Since you’re jumping from 1.8.5 to 1.11, don’t skip versions! Django’s official docs advise upgrading incrementally to avoid hidden issues:

• First upgrade from 1.8.5 → 1.9.x (latest patch version)
  • Run python manage.py check to catch compatibility warnings
  • Run all migrations: python manage.py migrate
• Then upgrade to 1.10.x
  • Again, run python manage.py check and fix any new warnings
  • Run migrations
• Finally upgrade to 1.11.x

4. Verify your hvad usage #

After upgrading django-hvad, double-check your code for any deprecated API usage. For example:

• If you were using hvad.utils.get_translation directly, it’s been renamed to hvad.utils.get_translation_object in newer versions
• Ensure your translated models are using the updated TranslationManager correctly

Your error traceback for reference: #

Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7f407d733b70>
Traceback (most recent call last):
  File "/home/riddle/pro/blog/env/lib/python3.6/site-packages/django/utils/autoreload.py", line 226, in wrapper
    fn(*args, **kwargs)
  File "/home/riddle/pro...

If you run into any specific code-related issues after upgrading, feel free to share more details about how you’re using django-hvad in your project!

内容的提问来源于stack exchange，提问作者Riddle00