[Django] #19755: Incremental filter

[Django]

#19755: Incremental filter
-------------------------------+---------------------------
     Reporter:  paulox@…       |      Owner:  nobody
         Type:  New feature    |     Status:  new
    Component:  contrib.admin  |    Version:  master
     Severity:  Normal         |   Keywords:  filter, admin
 Triage Stage:  Unreviewed     |  Has patch:  0
Easy pickings:  0              |      UI/UX:  1
-------------------------------+---------------------------
 Would be a good feature to have filter's value that change incrementally
 when user select one of them.


 I try to explain with an example:


 {{{
 class Person(models.Model):
     name = models.CharField()
     hair_color = models.CharField()
     eye_color = models.CharField()

 class PersonAdmin(admin.ModelAdmin):
     list_filter = ["hair_color", "eye_color"]
 }}}

 At first I'll see all hair color and eye color values in the filter.

 When I select an hair color value from the filter I'll see only person
 with that hair color.

 I would view in the eye color filter only distinct values of eye colors of
 person that have hair color I selected from the filter.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/19755>
Django <https://code.djangoproject.com/>
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