#19423: using formfield_overrides to set CharField size causes all admin fields
to
use last max_length in model definition
-------------------------------------+-------------------------------------
Reporter: joebuyer@… | Owner: nobody
Type: Bug | Status: new
Component: Uncategorized | Version: 1.4
Severity: Normal | Resolution:
Keywords: max_length | Triage Stage:
formfield_overrides | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Changes (by claudep):
* needs_better_patch: => 0
* needs_tests: => 0
* needs_docs: => 0
Old description:
> Here's my example. See how title and ISBN are defined with max_length of
> 100 and 14. The override cause both fields to have max_length of 14 with
> respect to a user who is editing in the change form - a 15th character
> cannot be inserted into the title field.
>
> models.py:
>
> from django.db import models
>
> class Book(models.Model):
> title = models.CharField(max_length=100,blank=True, null=True)
> ISBN13 = models.CharField(max_length=14,unique=True)
> def __unicode__(self):
> return self.title
>
> admin.py:
>
> from django.contrib import admin
> from django.db import models
> from django.forms import TextInput
> from books.models import Book
>
> class BookAdmin(admin.ModelAdmin):
> formfield_overrides = {
> # Django enforces maximum field length of 14 onto 'title' field
> when user is editing in the change form
> models.CharField: {'widget': TextInput(attrs={'size':'30'})},
> }
>
> admin.site.register(Book,BookAdmin)
New description:
Here's my example. See how title and ISBN are defined with max_length of
100 and 14. The override cause both fields to have max_length of 14 with
respect to a user who is editing in the change form - a 15th character
cannot be inserted into the title field.
models.py:
{{{
from django.db import models
class Book(models.Model):
title = models.CharField(max_length=100,blank=True, null=True)
ISBN13 = models.CharField(max_length=14,unique=True)
def __unicode__(self):
return self.title
}}}
admin.py:
{{{
from django.contrib import admin
from django.db import models
from django.forms import TextInput
from books.models import Book
class BookAdmin(admin.ModelAdmin):
formfield_overrides = {
# Django enforces maximum field length of 14 onto 'title' field
when user is editing in the change form
models.CharField: {'widget': TextInput(attrs={'size':'30'})},
}
admin.site.register(Book,BookAdmin)
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/19423#comment:1>
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