Create AnonymousBlock model

app/models/anonymous_block.rb

@@ -0,0 +1,4 @@
+class AnonymousBlock < ApplicationRecord
+  belongs_to :user
+  belongs_to :question, optional: true
+end

app/models/user.rb

@@ -37,6 +37,7 @@ class User < ApplicationRecord
   has_many :lists, dependent: :destroy
   has_many :list_memberships, class_name: "ListMember", foreign_key: 'user_id', dependent: :destroy
   has_many :mute_rules, dependent: :destroy
+  has_many :anonymous_blocks, dependent: :destroy
 
   has_many :subscriptions, dependent: :destroy
   has_many :totp_recovery_codes, dependent: :destroy

db/migrate/20220614141439_create_anonymous_blocks.rb

@@ -0,0 +1,11 @@
+class CreateAnonymousBlocks < ActiveRecord::Migration[6.1]
+  def change
+    create_table :anonymous_blocks do |t|
+      t.references :user, null: false, foreign_key: true
+      t.string :identifier, index: true
+      t.references :question, null: false, foreign_key: true
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2022_06_13_221551) do
+ActiveRecord::Schema.define(version: 2022_06_14_141439) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -27,6 +27,17 @@ ActiveRecord::Schema.define(version: 2022_06_13_221551) do
     t.index ["user_id"], name: "index_announcements_on_user_id"
   end
 
+  create_table "anonymous_blocks", force: :cascade do |t|
+    t.bigint "user_id", null: false
+    t.string "identifier"
+    t.bigint "question_id", null: false
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.index ["identifier"], name: "index_anonymous_blocks_on_identifier"
+    t.index ["question_id"], name: "index_anonymous_blocks_on_question_id"
+    t.index ["user_id"], name: "index_anonymous_blocks_on_user_id"
+  end
+
   create_table "answers", id: :bigint, default: -> { "gen_timestamp_id('answers'::text)" }, force: :cascade do |t|
     t.text "content"
     t.bigint "question_id"
@@ -39,18 +50,6 @@ ActiveRecord::Schema.define(version: 2022_06_13_221551) do
     t.index ["user_id", "created_at"], name: "index_answers_on_user_id_and_created_at"
   end
 
-  create_table "appendables", force: :cascade do |t|
-    t.string "type", null: false
-    t.bigint "user_id", null: false
-    t.bigint "parent_id", null: false
-    t.string "parent_type", null: false
-    t.text "content"
-    t.datetime "created_at", precision: 6, null: false
-    t.datetime "updated_at", precision: 6, null: false
-    t.index ["parent_id", "parent_type"], name: "index_appendables_on_parent_id_and_parent_type"
-    t.index ["user_id", "created_at"], name: "index_appendables_on_user_id_and_created_at"
-  end
-
   create_table "comment_smiles", id: :bigint, default: -> { "gen_timestamp_id('comment_smiles'::text)" }, force: :cascade do |t|
     t.bigint "user_id"
     t.bigint "comment_id"
@@ -336,6 +335,8 @@ ActiveRecord::Schema.define(version: 2022_06_13_221551) do
     t.index ["user_id"], name: "index_users_roles_on_user_id"
   end
 
+  add_foreign_key "anonymous_blocks", "questions"
+  add_foreign_key "anonymous_blocks", "users"
   add_foreign_key "mute_rules", "users"
   add_foreign_key "profiles", "users"
 end