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Fixed #7630 -- Slight tweak to the custom form widget exampleto avoid any 

confusion. Based on a patch from Christian Tanzer.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@7845 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Malcolm Tredinnick 2008-07-06 11:00:58 +00:00
parent 3cfa3cbd07
commit e2740dd400
1 changed files with 10 additions and 4 deletions
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14
docs/newforms.txt
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@ -1817,15 +1817,21 @@ reuse certain sets of widget attributes over and over again. Rather than
repeat these attribute definitions every time you need them, Django allows
you to capture those definitions as a custom widget.
For example, if you find that you are including a lot of comment fields on forms,
you could capture the idea of a ``TextInput`` with a specific ``size`` attribute
as a custom extension to the ``TextInput`` widget::
For example, if you find that you are including a lot of comment fields on
forms, you could capture the idea of a ``TextInput`` with a specific
default ``size`` attribute as a custom extension to the ``TextInput`` widget::
class CommentWidget(forms.TextInput):
def __init__(self, *args, **kwargs):
kwargs.setdefault('attrs',{}).update({'size': '40'})
attrs = kwargs.setdefault('attrs',{})
if 'size' not in attrs:
attrs['size'] = 40
super(CommentWidget, self).__init__(*args, **kwargs)
We allow the ``size`` attribute to be overridden by the user, but, by default,
this widget will behave as if ``attrs={'size': 40}`` was always passed into the
constructor.
Then you can use this widget in your forms::
class CommentForm(forms.Form):