Django forms, inheritance and order of form fields

Question

I\'m using Django forms in my website and would like to control the order of the fields.

Here\'s how I define my forms:

class edit_form(forms.Form):
         


        

Answer 1

I used the solution posted by Selene but found that it removed all fields which weren't assigned to keyOrder. The form that I'm subclassing has a lot of fields so this didn't work very well for me. I coded up this function to solve the problem using akaihola's answer, but if you want it to work like Selene's all you need to do is set throw_away to True.

def order_fields(form, field_list, throw_away=False):
    """
    Accepts a form and a list of dictionary keys which map to the
    form's fields. After running the form's fields list will begin
    with the fields in field_list. If throw_away is set to true only
    the fields in the field_list will remain in the form.

    example use:
    field_list = ['first_name', 'last_name']
    order_fields(self, field_list)
    """
    if throw_away:
        form.fields.keyOrder = field_list
    else:
        for field in field_list[::-1]:
            form.fields.insert(0, field, form.fields.pop(field))

This is how I'm using it in my own code:

class NestableCommentForm(ExtendedCommentSecurityForm):
    # TODO: Have min and max length be determined through settings.
    comment = forms.CharField(widget=forms.Textarea, max_length=100)
    parent_id = forms.IntegerField(widget=forms.HiddenInput, required=False)

    def __init__(self, *args, **kwargs):
        super(NestableCommentForm, self).__init__(*args, **kwargs)
        order_fields(self, ['comment', 'captcha'])