campaign.md

Campaigning Thingo

The models you have are: Campaign, User, Card, Question and Response. Here's how I would do it using ActiveRecord

Campaigns exist with questions and responses by users. The Campaign model would look like this:

class Campaign < ActiveRecord::Base
  has_many :questions
  has_many :responses, :through => :questions
end

This means that the questions table has a campaign_id on it, and responses would have question_id. The Question model looks like this:

class Question < ActiveRecord::Base
  belongs_to :campaign
  has_many :responses

Responses belong to a user, and also a question. The Response model:

class Response < ActiveRecord::Base
  belongs_to :question
  belongs_to :user
end

The User model looks like this:

class User < ActiveRecord::Base
  has_many :responses
end

I don't know what cards have to do with any of this, since these are represented in the physical world only, it seems. Perhaps this could be represented in the database too, but I don't see a need for it.