Hello,
Right now I have a School model containing a OneToOne-relation to User.
In the admin, in search_fields, I can use double underscores to search in
related fields, for example:
search_fields = ('place__name', 'school__name')
But in list_display, I can't. For example,
list_display = ['school', 'school__user', 'place', ]
gives an error.
I find this totally confusing. More people do.
A ticket has been made six years ago and was eventually closed as won't
fix. Currently, the proposed solution is to write a custom method or
callable. I'd like to raise a discussion to reopen that ticket.
For reference, see:
https://code.djangoproject.com/ticket/5863
https://groups.google.com/forum/#!topic/django-developers/eQSEv74bQh8
My arguments to allow such a syntax are:
1. allowing 'school__user' in list_display is consistent with the behaviour
of search_fields, list_filter in the admin, and get() and filter() query
syntax in general.
2. it saves many people duplicating two to four lines of custom code, and
in my opinion, allows for a more concise yet extremely easy to understand
notation.
3. ideally, a solution would use select_related in order to save database
queries and thus be longer than two to four lines of code.
4. the need is common, and in onetoonefields specifically. Many people have
expressed their interest in this feature, and a core developer initially
accepted it.
5. a long time has passed since then and our policy of accepting tickets
has changed.
Thanks for reading! I'd love to hear your response.
Regards, Wim
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