Re: Custom model field/form: __init__() got multiple values for keyword argument 'baz'

[Michal Petrucha]

On Tue, Sep 20, 2011 at 10:38:15AM -0700, mhulse wrote:
> Hello,
> 
> The problematic code can be found here:
> 
> <https://gist.github.com/1229708>
> 
> TypeError:
> 
> __init__() got multiple values for keyword argument 'baz'
> 
> I have spent the last couple days trying to figure out how to pass a kwarg 
> from model to fields/forms (and eventually to a widget).
> 
> TBTH, I have had a heck of a time finding a contemporary example of how to 
> do this that fits the needs of my project. The docs are definitely detailed, 
> and the Django source code is helpful, but I have yet to piece this puzzle 
> together. :(
> 
> Any tips would be greatly appreciated.
> 
> Django (1, 4, 0, 'alpha', 0)

Well, the problem is that your defined fields.TestField.__init__ takes
baz as either a keyword argument, or as the first positional arg. As
with related fields, to pass the verbose name in this case you have to
specify it as a keyword argument as well or specify your custom
argument first and shift all other positional arguments. So, to fix
your issue, choose either of the two following::

    foo = TestField(baz='bar', verbose_name=u'Foo field',
                    max_length=100, help_text='Foo baz bar?')

    foo = TestField('bar', u'Foo field', max_length=100,
                    help_text='Foo baz bar?')

Michal

signature.asc
Description: Digital signature