Cleaning of the default translating field does not clear the basic field about django-modeltranslation HOT 11 CLOSED

From eschler on September 10, 2010 09:28:25
Can't reproduce the issue. What database backend do you use? The original field is cleared correctly here with MySQL.

from django-modeltranslation.

From [email protected] on September 10, 2010 11:41:21
I use MySQL
django 1.2.1

It is strange. If I change default tranlastion to something, original field update correctly. But if I clear textfield input, than "title_ru" field becomes Null, but "title" field stay old...

Here is project example I used to reproduce the issue.

from django-modeltranslation.

From eschler on September 10, 2010 12:45:43
Thanks for the example project, i'll give it a try.

Is this an admin only problem or does it exist outside the admin, too? You can try it from a project shell (./manage.py shell) like this:

obj = MyModel.objects.get(id=1)
print obj.foo
bar
obj.foo = ''
obj.save()

This assumes obj.foo is already set to "bar" and then cleared. After save, you can check the db value of the original field. If it's still set to "bar", something is wrong at a lower level of modeltranslation than the admin integration.

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From [email protected] on September 11, 2010 12:29:41
I tried it outside admin as you wrote. It seems everything is ok - original field update to empty correctly. Problem appears in admin only.

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From [email protected] on March 28, 2011 13:52:17
What is the status of this bug for today?

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From [email protected] on April 08, 2011 09:53:32
I can confirm that this bug is still present with Django 1.3. It is an admin-only (but indeed very annoying) problem. Any chance for a fix in the near future? ;-)

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From eschler on April 10, 2011 16:35:38
I've managed to reproduce the bug using the example project. Something seems to go wrong in TranslationField.pre_save. The original field is updated correctly if the value of the translated field is not empty, but it fails if the value is an empty string.

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From eschler on April 10, 2011 20:27:27
This issue was closed by revision r103.

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From eschler on April 10, 2011 20:33:37
This was really a nasty one. I hope r103 resolves the issue. Please note that null constraints are currently not handled, if the default translation field is cleared and saved, the original field is set to an empty string.

Please let me know if it works for you.

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From [email protected] on April 11, 2011 12:35:23
I did some quick tests and it seems to work as expected. Thanks for the fix!

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From [email protected] on January 14, 2012 11:11:09
Having this bug.

Field can be changed, but cannot be set to empty string from admin. Both translated and original fields are not updated in the database. This happens only to default language fields.

Django 1.3.1, mysql, django_modeltranslation-0.3.2

from django-modeltranslation.