#2 ぼちぼち

backend/app/models/ip_address.rb

@@ -0,0 +1,6 @@
+class IpAddress < ApplicationRecord
+  validates :ip_address, presence: true, length: { maximum: 16 }
+  validates :banned, inclusion: { in: [true, false] }
+
+  has_many :users
+end

backend/app/models/nico_tag_relation.rb

@@ -0,0 +1,17 @@
+class NicoTagRelation < ApplicationRecord
+  belongs_to :nico_tag, class_name: 'Tag', foreign_key: 'nico_tag_id'
+  belongs_to :tag, class_name: 'Tag', foreign_key: 'tag_id'
+
+  validates :nico_tag_id, presence: true
+  validates :tag_id, prosence: true
+
+  validate :nico_tag_must_be_nico
+
+  private
+
+  def nico_tag_must_be_nico
+    if nico_tag && nico_tag.category != :nico
+      errors.add :nico_tag_id, 'タグのカテゴリがニコニコである必要があります．'
+    end
+  end
+end

backend/app/models/post.rb

@@ -1,2 +1,4 @@
 class Post < ApplicationRecord
+  belongs_to :parent, class_name: 'Post', optional: true, foreign_key: 'parent_id'
+  belongs_to :user, foreign_key: ''
 end

backend/app/models/tag.rb

@@ -0,0 +1,14 @@
+class Tag < ApplicationRecord
+  validates :name, presence: true, length: { maximum: 255 }
+  validates :category, presence: true, inclusion: { in: categories.keys }
+
+  enum category: { deerjikist:  'deerjikist',
+                   meme:        'meme',
+                   character:   'character',
+                   general:     'general',
+                   material:    'material',
+                   nico:        'nico',
+                   meta:        'meta' }
+
+  scope :nico_tags, -> { where(category: :nico) }
+end

backend/app/models/user.rb

@@ -0,0 +1,12 @@
+class User < ApplicationRecord
+  validates :name, length: { maximum: 255 }
+  validates :inheritance_code, presence: true, length: { maximum: 64 }
+  validates :role, presence: true, inclusion: { in: roles.keys }
+  validates :banned, inclusion: { in: [true, false] }
+
+  enum role: { guest: 'guest', member: 'member', admin: 'admin' }
+
+  has_many :posts
+  has_many :settings
+  has_many :ip_addresses
+end

backend/db/migrate/20250227211400_create_posts.rb

@@ -4,8 +4,8 @@ class CreatePosts < ActiveRecord::Migration[7.0]
       t.string :url, limit: 2000, null: false
       t.string :thumbnail, limit: 255, null: false
       t.string :thumbnail_base, limit: 2000, null: false
-      t.references :post, foreign_key: { to_table: :posts }
-      t.references :uploaded_by, foreign_key: { to_table: :users }
+      t.references :parent, foreign_key: { to_table: :posts }
+      t.references :uploaded_user, foreign_key: { to_table: :users }
       t.timestamps
     end
   end

backend/db/migrate/20250227211500_create_post_tags.rb

@@ -3,8 +3,8 @@ class CreatePostTags < ActiveRecord::Migration[7.0]
     create_table :post_tags do |t|
       t.references :post, null: false, foreign_key: { to_table: :posts }
       t.references :tag, null: false, foreign_key: { to_table: :tags }
-      t.references :created_by, foreign_key: { to_table: :users }
-      t.references :deleted_by, foreign_key: { to_table: :users }
+      t.references :created_user, foreign_key: { to_table: :users }
+      t.references :deleted_user, foreign_key: { to_table: :users }
       t.timestamps
     end
   end

backend/db/migrate/20250227214100_create_wiki_pages.rb

@@ -3,8 +3,8 @@ class CreateWikiPages < ActiveRecord::Migration[7.0]
     create_table :wiki_pages do |t|
       t.string :title, limit: 255, null: false
       t.references :tag, foreign_key: { to_table: :tags }
-      t.references :created_by, null: false, foreign_key: { to_table: :users }
-      t.references :updated_by, null: false, foreign_key: { to_table: :users }
+      t.references :created_user, null: false, foreign_key: { to_table: :users }
+      t.references :updated_user, null: false, foreign_key: { to_table: :users }
       t.timestamps
     end
   end

backend/db/schema.rb

@@ -30,12 +30,12 @@ ActiveRecord::Schema[8.0].define(version: 2025_02_27_214100) do
   create_table "post_tags", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
     t.bigint "post_id", null: false
     t.bigint "tag_id", null: false
-    t.bigint "created_by_id"
-    t.bigint "deleted_by_id"
+    t.bigint "created_user_id"
+    t.bigint "deleted_user_id"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.index ["created_by_id"], name: "index_post_tags_on_created_by_id"
-    t.index ["deleted_by_id"], name: "index_post_tags_on_deleted_by_id"
+    t.index ["created_user_id"], name: "index_post_tags_on_created_user_id"
+    t.index ["deleted_user_id"], name: "index_post_tags_on_deleted_user_id"
     t.index ["post_id"], name: "index_post_tags_on_post_id"
     t.index ["tag_id"], name: "index_post_tags_on_tag_id"
   end
@@ -44,12 +44,12 @@ ActiveRecord::Schema[8.0].define(version: 2025_02_27_214100) do
     t.string "url", limit: 2000, null: false
     t.string "thumbnail", null: false
     t.string "thumbnail_base", limit: 2000, null: false
-    t.bigint "post_id"
-    t.bigint "uploaded_by_id"
+    t.bigint "parent_id"
+    t.bigint "uploaded_user_id"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.index ["post_id"], name: "index_posts_on_post_id"
-    t.index ["uploaded_by_id"], name: "index_posts_on_uploaded_by_id"
+    t.index ["parent_id"], name: "index_posts_on_parent_id"
+    t.index ["uploaded_user_id"], name: "index_posts_on_uploaded_user_id"
   end
 
   create_table "settings", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
@@ -107,23 +107,23 @@ ActiveRecord::Schema[8.0].define(version: 2025_02_27_214100) do
   create_table "wiki_pages", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
     t.string "title", null: false
     t.bigint "tag_id"
-    t.bigint "created_by_id", null: false
-    t.bigint "updated_by_id", null: false
+    t.bigint "created_user_id", null: false
+    t.bigint "updated_user_id", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
-    t.index ["created_by_id"], name: "index_wiki_pages_on_created_by_id"
+    t.index ["created_user_id"], name: "index_wiki_pages_on_created_user_id"
     t.index ["tag_id"], name: "index_wiki_pages_on_tag_id"
-    t.index ["updated_by_id"], name: "index_wiki_pages_on_updated_by_id"
+    t.index ["updated_user_id"], name: "index_wiki_pages_on_updated_user_id"
   end
 
   add_foreign_key "nico_tag_relations", "tags"
   add_foreign_key "nico_tag_relations", "tags", column: "nico_tag_id"
   add_foreign_key "post_tags", "posts"
   add_foreign_key "post_tags", "tags"
-  add_foreign_key "post_tags", "users", column: "created_by_id"
-  add_foreign_key "post_tags", "users", column: "deleted_by_id"
-  add_foreign_key "posts", "posts"
-  add_foreign_key "posts", "users", column: "uploaded_by_id"
+  add_foreign_key "post_tags", "users", column: "created_user_id"
+  add_foreign_key "post_tags", "users", column: "deleted_user_id"
+  add_foreign_key "posts", "posts", column: "parent_id"
+  add_foreign_key "posts", "users", column: "uploaded_user_id"
   add_foreign_key "settings", "users"
   add_foreign_key "tag_aliases", "tags"
   add_foreign_key "user_ips", "ip_addresses"
@@ -131,6 +131,6 @@ ActiveRecord::Schema[8.0].define(version: 2025_02_27_214100) do
   add_foreign_key "user_post_views", "posts"
   add_foreign_key "user_post_views", "users"
   add_foreign_key "wiki_pages", "tags"
-  add_foreign_key "wiki_pages", "users", column: "created_by_id"
-  add_foreign_key "wiki_pages", "users", column: "updated_by_id"
+  add_foreign_key "wiki_pages", "users", column: "created_user_id"
+  add_foreign_key "wiki_pages", "users", column: "updated_user_id"
 end

backend/test/fixtures/ip_addresses.yml

@@ -0,0 +1,11 @@
+# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+# This model initially had no columns defined. If you add columns to the
+# model remove the "{}" from the fixture names and add the columns immediately
+# below each fixture, per the syntax in the comments below
+#
+one: {}
+# column: value
+#
+two: {}
+# column: value

backend/test/fixtures/nico_tag_relations.yml

@@ -0,0 +1,11 @@
+# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+# This model initially had no columns defined. If you add columns to the
+# model remove the "{}" from the fixture names and add the columns immediately
+# below each fixture, per the syntax in the comments below
+#
+one: {}
+# column: value
+#
+two: {}
+# column: value

backend/test/fixtures/posts.yml

@@ -1,9 +1,11 @@
 # Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
 
-one:
-  title: MyString
-  body: MyText
-
-two:
-  title: MyString
-  body: MyText
+# This model initially had no columns defined. If you add columns to the
+# model remove the "{}" from the fixture names and add the columns immediately
+# below each fixture, per the syntax in the comments below
+#
+one: {}
+# column: value
+#
+two: {}
+# column: value

backend/test/fixtures/tags.yml

@@ -0,0 +1,11 @@
+# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+# This model initially had no columns defined. If you add columns to the
+# model remove the "{}" from the fixture names and add the columns immediately
+# below each fixture, per the syntax in the comments below
+#
+one: {}
+# column: value
+#
+two: {}
+# column: value

backend/test/fixtures/users.yml

@@ -0,0 +1,11 @@
+# Read about fixtures at https://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+# This model initially had no columns defined. If you add columns to the
+# model remove the "{}" from the fixture names and add the columns immediately
+# below each fixture, per the syntax in the comments below
+#
+one: {}
+# column: value
+#
+two: {}
+# column: value

backend/test/models/ip_address_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class IpAddressTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end

backend/test/models/nico_tag_relation_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class NicoTagRelationTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end

backend/test/models/tag_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class TagTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end

backend/test/models/user_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class UserTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end