#29156: Increase 'order_with_respect_to' features
-------------------------------------+-------------------------------------
               Reporter:  tapia      |          Owner:  nobody
                   Type:  New        |         Status:  new
  feature                            |
              Component:  Database   |        Version:  2.0
  layer (models, ORM)                |
               Severity:  Normal     |       Keywords:
           Triage Stage:             |      Has patch:  0
  Unreviewed                         |
    Needs documentation:  0          |    Needs tests:  0
Patch needs improvement:  0          |  Easy pickings:  0
                  UI/UX:  0          |
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 With `order_with_respect_to`, we can do something like this:

 {{{
 class Book(models.Model):
     pass

 class Chapter(models.Model):
     book = models.ForeignKey(Book, on_delete=models.CASCADE)

     class Meta:
         order_with_respect_to = 'book'
 }}}

 It would be very nice to add some obvious features to this feature, for
 example:

 * `book.get_chapter_order()` returns the IDs of the chapters. Why not the
 chapter objects itself?

 * Given a chapter, we can get the next and the previous chapters, but we
 can't easily get that chapter's order.

 * It would be very nice to be able to add a chapter directly in a specific
 position, pretty much like python's `insert`. For example:
 `book.insert_chapter(chapter, 3)`

 I know it's a very broad request, but, if you guys like the idea, I'd love
 to take a look if I can add the functions myself (one at a time, to get
 your approval on each of them).

-- 
Ticket URL: <https://code.djangoproject.com/ticket/29156>
Django <https://code.djangoproject.com/>
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