Wrap field name and prepend w/ string

[ericdfields]

A common convention for form field inputs is to name each field as a sort of property to the object class we're modifying, for example <input name="patient[first_name]"> for the First Name input of my Patient form. This is the default for Rails forms, and I've seen it elsewhere too.

I see that you can pass a prefix on the Forms class to prefix our field names — I could generate patient-first_name in this case — but I can't quite pull off that wrapping I'd like. Is this currently possible? Would you take a PR that makes it so if not?

[insin]

Could use a prefix format string for this similar to autoId, current behaviour would have it defaulting to '{prefix}-{name}'.

Putting that on Form.prototype would allow overriding when extending, or monkeypatching globally.

[ericdfields]

Passing a nested object to create an object[attribute] relationship also comes to mind.

var SignupForm = forms.Form.extend({
  patient: {
    __mixins__: [PersonForm],
    birth_date: forms.CharField({
        widget: forms.TextInput({attrs: {className: 'datepicker'}})
     })(),
     ...
  }
})

creates <input name="patient[birth_date]" />, etc…