Automatically discover models within a package without using the app_label Meta attribute

[mark@…]

Automatically figure out the app_label for a model by looking one level up from the package or module named 'models'.
If no such package or module exists, fall back to the behavior of looking one level up from
the module the model is defined in.

For 'django.contrib.sites.models', this would be 'sites'.
For 'geo.models.places' this would be 'geo'.
For 'polymorphic.polymorhpic_model' this would be 'polymorphic'.

This allows organization of models within a package named 'models' without having to specify the app_label Meta attribute for each model.

[pandres]

Please upload a new patch fixing the title of the files.

A bug in Trac makes it difficult to see which file the patches belong (try -A1 -B1 and double check the file names).

[Aram Dulyan]

Cleanly-applying version of the patch above.

[Aram Dulyan]

The tests for the entire suite pass with the patch. The functionality works as advertised.

I've also tested it every which way I could think of, including plugging it into a giant project that uses models modules extensively and does some advanced customisation of the admin, and it still works.

[Aram Dulyan]

The above patch with appropriate documentation changes.

[patchhammer]

14007_fix_with_docs.diff fails to apply cleanly on to trunk

[Jacob]

Milestone 1.3 deleted

[Tim Graham]

​https://github.com/django/django/pull/1361

[Tim Graham <timograham@…>]

In 2333c9662b5ffbaec5a10fa2973b4e6e7b0555bd:

Fixed #14007 -- Added model discovery in models module without the need to specify app_label.

Thanks mark@ and Aramgutang for work on the patch.

[Aymeric Augustin]

#2982 and #4470 were duplicates.