Hi Jonas,
You can override validation by adding a "clean" method to the ModelAdmin
subclass. Look here for more details,
https://docs.djangoproject.com/en/dev/ref/forms/validation/#cleaning-and-validating-fields-that-depend-on-each-other
.
That is what I have been doing. It might be hacky, someone please let me
know if there is a better solution.
Going back to my earlier example it should look something like this. In the
clean function you can also raise ValidationErrors to send back a custom
error message.
# admin.py
from django.contrib import admin
from django.forms import widgets
class myModelAdmin(admin.ModelAdmin):
title = CharField(widget=widgets.Select(choices=('mr','mrs','miss'))
# This method name is dynamicly create using 'clean_' + model name to
create
# a method name.
def clean_title(self):
data = self.cleaned_data['title']
if(data == ''):
raise ValidationError("you forgot to set the title")
def clean(self):
# grab already cleaned data so we can manipulate it
data = super(myModelAdmin, self).clean()
new_title = data['title']
# do something to the old title then add it back to data
data['title'] = new_title
return data
admin.site.register(myModel, myModelAdmin)
Thats how I have been handling my validation issues. I hope this helps you
figure out your validation issues. If you are still having trouble post the
error message your are gettting, I might be able to help you more from that.
-Brian
Also if you have checked out DjangoSnippets you should check it out. I have
found some great working examples on that site.
On Sun, Oct 2, 2011 at 4:04 PM, Jonas Cleve <cleve.jo...@googlemail.com>wrote:
> Hi Brian,
>
> that works so far for displaying the correct choices in the admin
> interface. But the problem now is the validation. He always tells me
> that my choice is not a correct value.
> I have been looking for a way to change validation but I can't figure
> out how to do this...
>
> Thanks for your help so far.
>
> Jonas
>
> Am 02.10.2011 19:41, schrieb Brian Mehrman:
> > HI, Artemis,
> >
> > If I understand you correctly you want to use a Select Widget for your
> > CharField. And feed your choices to the select widget.
> >
> > In your admin.py file of your app you will want to override the model's
> > form field.
> >
> >
> > # models.py
> > from django.db import models
> >
> > myModel(models.Model):
> > person = models.CharField()
> > title = models.CharField()
> >
> > # admin.py
> > from django.contrib import admin
> > from django.forms import widgets
> >
> > myModelAdmin(admin.ModelAdmin):
> > title = CharField(widget=widgets.Select(choices=('mr','mrs','miss'))
> >
> > admin.site.register(myModel, myModelAdmin)
> >
> > This code hasnt been tested but should be the route you want to take.
> > You can find more info on widgets
> > here(https://docs.djangoproject.com/en/1.3/ref/forms/widgets/). I hope
> > this helps you.
> >
> > -Brian
> >
> > On Sun, Oct 2, 2011 at 12:20 PM, Artemis <cleve.jo...@googlemail.com
> > <mailto:cleve.jo...@googlemail.com>> wrote:
> >
> > Hi,
> >
> > I have an model which contains a CharField.
> > Now I want to have different subclasses of this model each one with
> > different *choices* for the CharFiel. How can I implement this?
> >
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