#24479: models: please document that order_with_respect_to overwrites ordering /
add a warning
-------------------------------+--------------------
     Reporter:  blueyed        |      Owner:  nobody
         Type:  Bug            |     Status:  new
    Component:  Uncategorized  |    Version:  master
     Severity:  Normal         |   Keywords:
 Triage Stage:  Unreviewed     |  Has patch:  0
Easy pickings:  0              |      UI/UX:  0
-------------------------------+--------------------
 (In django/db/models/options.py)

 1. When `order_with_respect_to` is being used, and value in `ordering`
 gets silently overwritten:

     self.ordering = ('_order',)

 This should be documented.

 2. Additionally, I am wondering if there should be a warning / hint when
 this happens, i.e. when `self.ordering` is non-empty.  It might be
 possible to keep any existing values, and prepend/append the `_order`
 value?!

 3. With that code (`models.Options._prepare`), `ordering` gets set to
 `('_order',)` always (see point 1), but the proxy "field" gets only added
 if there's no `OrderWrt` field yet.  This could lead to having an invalid
 setting for `ordering`, in case there's a `OrderWrt` field that's not
 named `_order`?!

 I think point 1 should be addressed anyway (apart from what gets done
 considering 2. and 3.).

--
Ticket URL: <https://code.djangoproject.com/ticket/24479>
Django <https://code.djangoproject.com/>
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