I've got my models setup for a many-to-many relationship:
class Workshop < ActiveRecord::Base
has_many :workshop_students
has_many :students, :through => :student_workshops
accepts_nested_attributes_for :students
end
class Student < ActiveRecord::Base
has_many :student_workshops
has_many :workshops, :through => :student_workshops
accepts_nested_attributes_for :products
end
class StudentWorkshop < ActiveRecord::Base
belongs_to :student
belongs_to :workshop
end
As you can see above, a student can have many workshops and workshop can have many students.
I've looked at the following Rails casts: here and here. And most of the online sources I stumble across only show how to do nested forms for creating new objects within the parent form.
I don't want to create a new object. I only want to add an existing object to the parent form. So for example. If I decide to create a new workshop, I'd like to assign existing students to the workshop.
One thing I don't understand is, how do I link students into the workshop form? Second, when the params are passed, what should be in the controller method for update/create?
If anyone can point me to the right direction, I would appreciate it.
