Creating a One-to-Many Association between the Quiz and McQuestion Mo…

…del Classes
human-se · Feb 23, 2020 · 92f89db · 92f89db
1 parent 08f4453
commit 92f89db
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diff --git a/app/models/mc_question.rb b/app/models/mc_question.rb
@@ -21,6 +21,14 @@
 #
 
 class McQuestion < ApplicationRecord
+
+  belongs_to(
+    :quiz, # McQuestion attribute of with datatype Quiz
+    class_name: 'Quiz', # datatype of attribute
+    foreign_key: 'quiz_id', # name of column containing FK
+    inverse_of: :mc_questions # attribute on other side of association (array containing all McQuestion objects belonging to a quiz)
+  )
+
   validates :question,
     presence: true,
     uniqueness: true

diff --git a/app/models/quiz.rb b/app/models/quiz.rb
@@ -10,6 +10,16 @@
 #
 
 class Quiz < ApplicationRecord
+
+  has_many(
+    :mc_questions, # Quiz attribute containing an array of McQuestion objects
+    class_name: 'McQuestion', # datatype of attribute
+    foreign_key: 'quiz_id', # name of column containing FK in other table
+    inverse_of: :quiz, # attribute on other side of association (parent Quiz object)
+    dependent: :destroy # if a quiz is destroyed, also destroy all of its questions
+  )
+
   validates :title, presence: true
   validates :description, presence: true
+
 end