Field's `show_hidden_initial` property is not being respected

[mick88]

Django form field has a property that can be set in constructor:

        # show_hidden_initial -- Boolean that specifies if it is needed to render a
        #                        hidden widget with initial value after widget.

When bound field is rendered by Django, it is used to append a hidden field containing the default value:

    def __str__(self):
        """Render this field as an HTML widget."""
        if self.field.show_hidden_initial:
            return self.as_widget() + self.as_hidden(only_initial=True)
        return self.as_widget()

However, when rendering form using FieldRenderer, this functionality is broken. As a result, form's changed_values contains the field even if it was not actually changed by user (assuming it already has a value)

Affected versions: Django 2.2.23 django-bootstrap3 15.0.0

[mick88]

The linked Pull Request fixes the issue for me in django 2.2. I have not tested other Django versions, but show_hidden_initial and implementetion of field render is the same in Django 2.2 and 3.2, so the fix should work for all supported versions of Django.

[dyve]

Reviving this. We should check this in 4 and 5 also. A (failing) unit test would help.

[dyve]

No further changes are expected on this project. See README.md (https://github.com/zostera/django-bootstrap3/pull/964 ).