id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
8071	Admin app ignores custom form settings for inline formsets for inline-edited foreign key models	dan	nobody	"custom form values appear to be being ignored for inline form sets in the admin app. Say if i try to eclude a field from an inline-edited form 

consider a simple app: (in my case the app is called {{{simple}}}, in the project {{{reducer}}}

{{{
class Salad (models.Model) :
    name = models.TextField(max_length=100)
    
class Ingredient (models.Model) :
    name = models.TextField(max_length=100)
    salad = models.ForeignKey(Salad)
    unwanted = models.TextField(max_length=200)
}}}

If i define an admin site which will allow Ingredient to be edited inline in the Salad admin, then it appears i lose the ability to customize the form. say I wish to exclude the field ""unwanted"" from being edited in the inline formset. I defined an admin site thusly in the app's {{{admin.py}}}:

{{{
import reducer.simple.models as simplemodels 
from django.contrib import admin
from django import forms
from django.forms.models import inlineformset_factory

class IngredientForm(forms.ModelForm):
    class Meta:
        exclude = (""unwanted"")
        model = simplemodels.Ingredient

IngredientInlineFormSet = inlineformset_factory(
  simplemodels.Salad, simplemodels.Ingredient,
  exclude = [""unwanted""],
  form = IngredientForm,
) 

class IngredientInline(admin.TabularInline): 
    model =  simplemodels.Ingredient
    extra = 3
    formset = IngredientInlineFormSet
    form = IngredientForm

class SaladAdmin(admin.ModelAdmin):
    inlines = ( IngredientInline, )

adminsite = admin.AdminSite()
adminsite.register(simplemodels.Salad, SaladAdmin)
}}}

Now if i fire this site up in a development server and browse to http://localhost:8000/admin/simple/salad/add/, i will find that the ""unwanted"" field is still available in the admin interface, despite being excluded from the form that i have specified as the admin 

there is some redundancy in my test case above; I have specified the from both in {{{IngredientInline}}} and {{{IngredientInlineFormSet}}}; I have specified the excluded fields both in {{{IngredientForm}}} and in {{{IngredientInlineFormSet}}}. However, I have made still further reduced cases where these values are specified once each and they still fail.

It's the end of a long day and I'll be away for the weekend, so I'm posting this issue here now rather than tracing any further down through the newforms admin site code, whose mysterious form rendering logic i have yet to grok. Hopefully someone wiser than I will have a look."	Bug	closed	contrib.admin	dev	Normal	duplicate			Accepted	1	0	1	0	0	0