Re: MultiWidget not rendering

Hi all, I figured out how it works.

Using MultiWidget requires three components: MultiWidget, MultiValueField and a form.

Here is my example:

class ComplexMultiWidget(forms.MultiWidget):
    def __init__(self, attrs=None):
        widgets = (
            forms.DateInput(),
            forms.Select(choices=(('D', 'Days'),
                                  ('W', 'Weeks'),
                                  ('Y', 'Years'))),
        )
        super(ComplexMultiWidget, self).__init__(widgets, attrs)

    def decompress(self, value):
        if value:
            data = value.split(',')
            return [data[0], data[1]]
        return [None, None, None]

    def format_output(self, rendered_widgets):
        return u'\n'.join(rendered_widgets)


class ComplexField(forms.MultiValueField):
    def __init__(self, required=True, widget=None, label=None, initial=None):
        fields = (
            forms.DateField(widget=forms.DateInput),
            forms.ChoiceField(choices=(('D', 'Days'),
                                       ('W', 'Weeks'),
                                       ('Y', 'Years'))),
        )
        super(ComplexField, self).__init__(fields, required,
                                           widget, label, initial)

    def compress(self, data_list):
        if data_list:
            return '%s,%s' % (data_list[0],''.join(data_list[1]))
        return None

class ComplexFieldForm(forms.Form):
    field1 = ComplexField(widget=ComplexMultiWidget())

I took the solution from here: http://stackoverflow.com/a/2387330

I hope this help someone in the future!

On Monday, December 19, 2016 at 12:40:12 PM UTC-5, Farhan Khan wrote:

Hi all!

I am trying to get a MultiWidget with two TextFields ,however I am not able to get anything to render. Here is my code.

from django import forms
from django.forms import widgets

class DateSelectorWidget(widgets.MultiWidget):
    def __init__(self, attrs=None):
        _widgets = (forms.TextInput(),
                    forms.TextInput())
        super(DateSelectorWidget, self).__init__(_widgets, attrs)

    def format_output(self, rendered_widgets):
        return ''.join(rendered_widgets)

class Fourteen(forms.Form):
    mywidget = DateSelectorWidget()

In the shell I will do:

>>> fourteen = Fourteen()

>>> print(fourteen)

>>>

Nothing will render. I suspect that I need to manually render the HTML, but the documentation is fairly light on this topic.

Any assistance would be greatly appreciated!

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