Karen thank you very much for your accurate reply.
> Changing the display in the
> change view is a little more involved -- that needs to change the form used
> by the admin to one where the field in question has a customized
> label_from_instance that returns what you are looking for.
>
This is the solution I found to the problem, following your advice (in
case sb else is looking for this also):
file: admin.py
from django.contrib import admin
from django.forms import ModelForm, ModelChoiceField
from myapp.models import Model1, Model2
class Model1Admin(admin.ModelAdmin):
pass
class MyModelChoiceField(ModelChoiceField):
def label_from_instance(self, obj):
return '%s' % obj.code2
class MyModel2AdminForm(ModelForm):
mycode = MyModelChoiceField(Model1.objects) #this is not well
documented imho
class Meta:
model = Model2
class Model2Admin(admin.ModelAdmin):
form = MyModel2AdminForm
def mycode_display(self, m2obj):
return m2obj.mycode.code2
list_display = ['mycode_display', 'mydata']
admin.site.register(Model1, Model1Admin)
admin.site.register(Model2, Model2Admin)
I think the overriding of a ModelChoiceField in a ModelForm should
have an example in the documentation (e.g. at
http://docs.djangoproject.com/en/dev/topics/forms/modelforms/#overriding-the-default-field-types).
I figured out that it needs a Model1.objects argument because the
exceptions mentioned that "type object 'Model1' has no attribute 'all'
".
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