Odtnhj

I have the following problem.

Normally in Django Class based views the get_form_kwargs method is used to supply the kwargs to the forms __init__(). For example:

class ComponentForm(forms.ModelForm):
 diameter = forms.ModelChoiceField(queryset=Diameter.objects.all(), label='Diameter') # required=True, 

 class Meta:
 model = Component
 fields = [
 'component_type',
 'diameter',
 'length'
 ]

 def __init__(self, *args, **kwargs):
 circuit = kwargs.pop('circuit')
 project = kwargs.pop('project')
 super(ComponentForm, self).__init__(*args, **kwargs)
 self.fields['diameter'].queryset = Diameter.objects.filter(project=project, material = circuit.material_type)

In the example code above, the "circuit" and "project" are supplied by the get_form_kwargs method in the corresponding view.

The question is now how to pass these kwargs to the ComponentForm __init__() using a function based view?

Well, you just pass them.

form = ComponentForm(circuit=whatever, project=whatever)

Two ways.

Specify the directly in the constructor call.

form = ComponentForm(keyword_arg1=value1, keyword_args2=value2)

Alternatively build up a dictionary and pass it in with **kwargs syntax - I find this useful when dynamically adding attributes, and also when using inheritance (like the call to super().init() in your example).

kwargs = keyword_arg1: value1
kwargs.update(keyword_arg2:value2) # usually with conditionals to specify what gets added
form = ComponentForm(**kwargs)