Allow null for saved annotations

app/models/activity_read_state.rb

@@ -8,6 +8,7 @@
 #  user_id     :integer          not null
 #  created_at  :datetime         not null
 #  updated_at  :datetime         not null
+#  series_id   :integer
 #
 class ActivityReadState < ApplicationRecord
   belongs_to :activity

app/models/saved_annotation.rb

@@ -6,8 +6,8 @@
 #  title             :string(255)      not null
 #  annotation_text   :text(16777215)
 #  user_id           :integer          not null
-#  exercise_id       :integer          not null
-#  course_id         :integer          not null
+#  exercise_id       :integer
+#  course_id         :integer
 #  created_at        :datetime         not null
 #  updated_at        :datetime         not null
 #  annotations_count :integer          default(0)
@@ -17,8 +17,8 @@ class SavedAnnotation < ApplicationRecord
   validates :annotation_text, presence: true
 
   belongs_to :user
-  belongs_to :exercise
-  belongs_to :course
+  belongs_to :exercise, optional: true
+  belongs_to :course, optional: true
 
   has_many :annotations, dependent: :nullify
   has_many :submissions, through: :annotations

app/models/submission.rb

@@ -14,6 +14,7 @@
 #  fs_key      :string(24)
 #  number      :integer
 #  annotated   :boolean          default(FALSE), not null
+#  series_id   :integer
 #
 
 class Submission < ApplicationRecord

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2024_03_07_124219) do
+ActiveRecord::Schema[7.1].define(version: 2024_06_26_093130) do
   create_table "active_storage_attachments", charset: "utf8mb4", collation: "utf8mb4_unicode_ci", force: :cascade do |t|
     t.string "name", null: false
     t.string "record_type", null: false
@@ -82,6 +82,7 @@
     t.integer "user_id", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.integer "series_id"
     t.index ["activity_id", "course_id", "user_id"], name: "activity_read_states_unique", unique: true
     t.index ["course_id"], name: "fk_rails_f674cacc14"
     t.index ["user_id"], name: "fk_rails_96d00253e9"
@@ -420,8 +421,8 @@
     t.string "title", null: false
     t.text "annotation_text", size: :medium
     t.integer "user_id", null: false
-    t.integer "exercise_id", null: false
-    t.integer "course_id", null: false
+    t.integer "exercise_id"
+    t.integer "course_id"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
     t.integer "annotations_count", default: 0
@@ -499,6 +500,7 @@
     t.string "fs_key", limit: 24
     t.integer "number"
     t.boolean "annotated", default: false, null: false
+    t.integer "series_id"
     t.index ["accepted"], name: "index_submissions_on_accepted"
     t.index ["course_id"], name: "index_submissions_on_course_id"
     t.index ["exercise_id", "status", "course_id"], name: "ex_st_co_idx"

test/factories/saved_annotations.rb

@@ -6,8 +6,8 @@
 #  title             :string(255)      not null
 #  annotation_text   :text(16777215)
 #  user_id           :integer          not null
-#  exercise_id       :integer          not null
-#  course_id         :integer          not null
+#  exercise_id       :integer
+#  course_id         :integer
 #  created_at        :datetime         not null
 #  updated_at        :datetime         not null
 #  annotations_count :integer          default(0)

test/factories/submissions.rb

@@ -14,6 +14,7 @@
 #  fs_key      :string(24)
 #  number      :integer
 #  annotated   :boolean          default(FALSE), not null
+#  series_id   :integer
 #
 
 FactoryBot.define do

test/models/activity_read_state_test.rb

@@ -8,6 +8,7 @@
 #  user_id     :integer          not null
 #  created_at  :datetime         not null
 #  updated_at  :datetime         not null
+#  series_id   :integer
 #
 
 require 'test_helper'

test/models/saved_annotation_test.rb

@@ -6,8 +6,8 @@
 #  title             :string(255)      not null
 #  annotation_text   :text(16777215)
 #  user_id           :integer          not null
-#  exercise_id       :integer          not null
-#  course_id         :integer          not null
+#  exercise_id       :integer
+#  course_id         :integer
 #  created_at        :datetime         not null
 #  updated_at        :datetime         not null
 #  annotations_count :integer          default(0)

test/models/submission_test.rb

@@ -14,6 +14,7 @@
 #  fs_key      :string(24)
 #  number      :integer
 #  annotated   :boolean          default(FALSE), not null
+#  series_id   :integer
 #
 
 require 'test_helper'