testing scheduling

app/models/attempt.rb

@@ -0,0 +1,8 @@
+class Attempt < ApplicationRecord
+
+  belongs_to :schedule
+  belongs_to :recipient
+  belongs_to :recipient_schedule
+  belongs_to :question
+
+end

app/models/recipient.rb

@@ -4,6 +4,8 @@ class Recipient < ApplicationRecord
   belongs_to :school
   validates_associated :school
 
+  has_many :attempts
+
   validates :name, presence: true
 
   def self.import(school, file)

app/models/recipient_schedule.rb

@@ -0,0 +1,29 @@
+class RecipientSchedule < ApplicationRecord
+
+  belongs_to :recipient
+  belongs_to :schedule
+  has_many :attempts
+
+  def next_question
+    upcoming = upcoming_question_ids.split(/,/)
+    Question.where(id: upcoming.first).first
+  end
+
+  def make_attempt(question: next_question)
+    sent_at = Time.new
+    recipient.attempts.create(
+      schedule: schedule,
+      recipient_schedule: self,
+      question: question,
+      sent_at: sent_at
+    )
+
+    upcoming = upcoming_question_ids.split(/,/)[1..-1].join(',')
+    attempted = (attempted_question_ids.split(/,/) + [question.id]).join(',')
+    update_attributes(
+      upcoming_question_ids: upcoming,
+      attempted_question_ids: attempted,
+      last_attempt_at: sent_at
+    )
+  end
+end