#5986: Custom field order in newforms
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Reporter: emes | Owner: nobody
Status: new | Component: django.newforms
Version: SVN | Keywords: field order weight form newforms
Stage: Unreviewed | Has_patch: 0
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Consider this example:
{{{
from django import newforms as forms
class UserForm(forms.Form):
# Used for registering new accounts.
username = forms.CharField(max_length=20)
email = forms.EmailField()
password = forms.CharField(max_length=20)
password2 = forms.CharField(max_length=20)
# Lots of validators which check if username is unique,
# password1 == password2 and so on.
class UserProfileForm(UserForm):
# Inherits all UserForm fields and validators and adds
# optional profile entries.
first_name = forms.CharField(max_length=30)
last_name = forms.CharField(max_length=30)
jabber_id = forms.EmailField(required=False)
}}}
The ''!UserProfileForm'' can inherit all the goods of ''!UserForm'':
fields and validators. But the field order may look a bit messy then:
{{{
>>> UserProfileForm.base_fields.keys()
['username',
'email',
'password',
'password2',
'first_name',
'last_name',
'jabber_id']
}}}
It would be nice to have ''email'' grouped with ''jabber_id'',
''first_name'' and ''last_name'' with ''username'', etc. It's of course
possible to do it using custom template, but violates DRY principle and
renders ''as_*()'' methods useless.
The attached patch allows to specify a custom Field order within a Form,
even with inherited fields.
Every Field may have an additional ''weight'' parameter with default value
of ''0''. All fields are sorted in ascending ''weight'' order.
The example forms customized with ''weight'' parameters:
{{{
from django import newforms as forms
class UserForm(forms.Form):
username = forms.CharField(max_length=20, weight=-2)
email = forms.EmailField()
password = forms.CharField(max_length=20, weight=1)
password2 = forms.CharField(max_length=20, weight=1)
class UserProfileForm(UserForm):
first_name = forms.CharField(max_length=30, weight=-1)
last_name = forms.CharField(max_length=30, weight=-1)
jabber_id = forms.EmailField()
}}}
And the effect:
{{{
>>> UserProfileForm.base_fields.keys()
['username',
'first_name',
'last_name',
'email',
'jabber_id',
'password',
'password2']
}}}
--
Ticket URL: <http://code.djangoproject.com/ticket/5986>
Django Code <http://code.djangoproject.com/>
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