MultiWidget not rendering subfields with the correct classes

[73VW]

Hello,

As the title suggests, when rendering a multiwidget, classes are not applied to the subwidgets.

The cause is the following:

In https://github.com/django-crispy-forms/crispy-tailwind/blob/main/crispy_tailwind/templatetags/tailwind_field.py, in the CrispyTailwindFieldNode.render method, we're iterating over the widgets but trying to get the css-class for the widgets of the field. This works fine when the field's widget has no subwidget (CharField, etc), but not for a MultiWidget.

        for widget, attr in zip(widgets, attrs):
...
            if template_pack == "tailwind" and '"class"' not in attr.keys():
                css_container = context.get("css_container", self.default_container)
                if css_container:
                    css = " " + css_container.get_input_class(field)
                    css_class += css

It's always the parent field which is passed to css_container.get_input_class.

in get_input_class, we get the name of the widget linked to the field:

    def get_input_class(self, field):
        widget_name = re.sub(r"widget$|input$", "", field.field.widget.__class__.__name__.lower())
        return getattr(self, widget_name, "")

widget_name will be equal to multi which, in turn does not return any css class for the subwidget.

I have found the workaround and will open a PR in the meantime so we can discuss it there.