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Django has very good documentation that describes how to write custom database fields and custom template tags and filters. I cannot find the document that describes how to write custom form fields and widgets. Does this document exist?
The way I've been able to write custom form fields and widgets is by reading the Django source code and imitating what I see there. I know that there are still things about implementing fields and widgets that I do not completely understand because I have not read any high level document that describes their interfaces.
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So, we have to just design the HTML with css, and use it in Django by just replacing the input tag with render_field and form. field_name with {% %} at the end and design it with our choice.
Form fields deal with the logic of input validation and are used directly in templates. Widgets deal with rendering of HTML form input elements on the web page and extraction of raw submitted data. However, widgets do need to be assigned to form fields.
The widget in Django will handle the rendering of the HTML elements and extract data from a POST/GET dictionary that corresponds to the same widget. Whenever we specify a field on a Django form, Django uses some default widget appropriate to the data type to be displayed.
The main difference between the two is that in forms that are created from forms. ModelForm , we have to declare which model will be used to create our form. In our Article Form above we have this line " model = models. Article " which basically means we are going to use Article model to create our form.
I have not found any good documentation (especially for widgets). I would suggest continuing to do it the way you are, and google specific problems (e.g., "creating a MultiValueField and MultiWidget").
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