[PATCH] Admin list display doesn't properly display FloatFields

[heckj@…]

In version 0.95 and through trunk on SVN, the admin interface by default doesn't properly display values stored in FloatFields.

The resulting access to the admin page with a FloatField results in the traceback:

If you use a FloatField in the admin list_display, you get an error
rendering the template from line 160 in admin_list.py (TypeError, float
argument required)

158. elif isinstance(f, models.FloatField):
159. if field_val is not None:
160. result_repr = ('%%.%sf' % f.decimal_places) %

field_val

161. else:
162. result_repr = EMPTY_CHANGELIST_VALUE

Back in April, Dave A recorded a possible fix on the django-user's mailing list, but I wasn't ever able to find a bug about it, or a patch - so I'm supplying it based on what he suggested. It works nicely, and resolves the internal display issue. He asserted:

I think the line should be:

160. result_repr = ('%%.%df' % f.decimal_places) % float(field_val)

[heckj@…]

Patch file for admin list display

[Matt McClanahan <cardinal@…>]

This appears to be functioning normally in trunk. Can you retest?

[nick@…]

I still have the same problem, but it's only happening when I use the MySQL backend - don't have the error with the SQLite backend. I'm using trunk also but a couple of weeks old since I can't access the SVN from work due to proxy issues - will update and retest but it looks like the code hasn't changed since my last update.

P.S. Sorry about the duplicate ticket, in a rush and thought I had already checked but obviously not.

[nick@…]

Just found #1364, looks like I have to update MySQL python bindings. Sorry about the confusion, ignore previous post.

[Michal Chruszcz <troll@…>]

I think that including this tiny patch wouldn't bother anyone, while updating MySQL driver might be a struggling task (e.g. when you, just like me, use a shared hosting and don't have much influence on the versions of software installed). Why not to apply it to the trunk?