Add input support to admin actions (with patch)

[Jerome Leclanche]

I wanted to be able to set tags to a lot of objects at once in the admin site.
The attached patch adds a takes_input attribute to an admin action (default False). If set to True, a 4th "input" argument will be passed, which you can use as such:

def add_tag(modeladmin, request, queryset, input):
	for obj in queryset:
		Tag.objects.add_tag(obj, input)
add_tag.takes_input = True

I'd love some comments on it. Some TODO would be:

• Hiding the input if no give action takes an input
• js-disabling it if the current selected action doesn't take an input.. not too sure about that.

[Will Hardy]

Would I be right in saying that this can already be done using an action with an ​intermediate page?

A change like this appears to complicate things, and doesn't cover the field (it only works where the required input is a single line of text).

[Jerome Leclanche]

It's personally one of the things I'd expect to be able to do without an intermediate page. Per the docs, and intermediate page would be for more complex actions. Adding an input field on-demand, to me, sounds reasonable.

[Tay Ray Chuan]

I quote Version1.2Features:

Admin-03 (Support for input arguments on admin actions.) - this would overly complicate the admin UI and dilute the purpose of the admin actions.

Thought this would be relevant to this discussion.

[Aymeric Augustin]

Change UI/UX from NULL to False.

[Aymeric Augustin]

Change Easy pickings from NULL to False.

[Aymeric Augustin]

Revert accidental batch modification.

[Aymeric Augustin]

Comment 5 points out this was rejected in the past. To reverse that decision, please make your case on django-developers.