Problem with Django models & MySQL & custom unicode classes

[Dominique Barton]

Hi there

I use a custom model field (inherited from TextField) which simply returns its value as an "enhanced" unicode object.
Unfortunately, this will raise UnicodeErrors as MySQLdb apparently fails recognizing those values as unicode. The comparision isn't very clever there ;)

MySQLdb has a use_unicode flag, but I don't know how to implement it in Django and I think this is a serious bug.

I've prepared a whole test case right here: ​https://github.com/domibarton/django-mysql-unicode-error

I hope this is enough for a "proper" bug description.

Cheers
Domi

EDIT: It has NOTHING to do with my custom text field, this was just an example. Basically Django (or MySQLdb) fails when writing non-unicode objects (but unicode-inherited objects) values to a TextField. Proof for that issue is right here: ​https://gist.github.com/domibarton/aa691342321f63f3511bb1ff53b946c7

[Tim Graham]

In this case, you need to explain why Django is at fault and ideally provide a patch that fixes the issue. From what you provided so far, it looks like you're asking for help debugging your custom field. For ways to get help with that, see TicketClosingReasons/UseSupportChannels.

[Claude Paroz]

You might also read ​https://docs.djangoproject.com/en/stable/howto/custom-model-fields/#converting-query-values-to-database-values

[Dominique Barton]

I was in the IRC channels and they sent me here. I specifically asked them "is this really OK to file a bug" and the answer was "yes it is".
Now you tell me I've to go back?

[Dominique Barton]

Replying to Tim Graham:

From what you provided so far, it looks like you're asking for help debugging your custom field.

No I don't need help with debugging my custom field as my custom field is not the problem! As I described before, IT IS A BUG and therefore I think this ticket is quite valid!

Let's keep it simple and ignore the fact that I'm trying to make a custom model field. Use a stock TextField, write a value to it and then save the model. Now do the same, but use a custom unicode class for the value. Something like that:

​https://gist.github.com/domibarton/aa691342321f63f3511bb1ff53b946c7