Hello everyone,
I'm developing a rather complex form where the selection options need to
depend on what the user selects in a previous field.
As a simplistic example, let's say there are two models, Owner and Thing,
where an Owner can have multiple Things. I would like to have a form where
you first pick an Owner, and then pick a Thing that the Owner has (and only
Things the owner has). Ideally this would be done without using multiple
forms (as I have many such complicated fields). There can be many owners so
it is not feasible to have a hidden dropdown for each owner.
Here is sort-of what I envision:
db.define_table("person", Field('name'))
db.define_table("thing", Field('owner', 'reference person'))
db.define_table("thing_selection", Field('owner', 'reference person'),
Field('thing', 'reference thing',
requires=IS_IN_DB(db(thisform.thing.owner == thisform.person.id),
'thing.id'))
)
where thisform is what the user is submitting as a SQLFORM (or crud.create)
I imagine the solution will likely require AJAX. Is there a good resource
or practice or things to keep in mind for editing a dropdown form with
ajax, and how might I do it? Or if you have any other suggestions they are
welcome. Thanks!
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