#55

backend/db/migrate/20260922010000_create_scripts.rb

@@ -4,13 +4,16 @@ class CreateScripts < ActiveRecord::Migration[8.0]
       t.string :name, null: false
       t.datetime :deprecated_at, index: true
       t.datetime :created_at, null: false
+
+      t.check_constraint "REGEXP_LIKE(code, '^[A-Z][a-z]{3}$', 'c')",
+                         name: 'scripts_code_check'
     end
 
     execute <<~SQL
       INSERT INTO
         scripts(code, name, created_at)
       VALUES
-        ('Jpan', '漢字および仮名文字', #{ connection.quote Time.current })
+        ('Jpan', '漢字、仮名文字およびラテン文字', #{ connection.quote Time.current })
     SQL
   end
 

backend/db/migrate/20260922013000_create_regions.rb

@@ -0,0 +1,25 @@
+class CreateRegions < ActiveRecord::Migration[8.0]
+  def up
+    create_table :regions, id: { type: :integer, limit: 2 }, primary_key: :code do |t|
+      t.column :alpha_code, 'CHAR(2)'
+      t.string :name, null: false
+      t.datetime :deprecated_at, index: true
+      t.datetime :created_at, null: false
+
+      t.check_constraint "REGEXP_LIKE(alpha_code, '^[A-Z]{2}$', 'c')",
+                         name: 'regions_alpha_code_check'
+      t.index [:alpha_code], unique: true
+    end
+
+    execute <<~SQL
+      INSERT INTO
+        regions(code, alpha_code, name, created_at)
+      VALUES
+        (392, 'JP', '日本国', #{ connection.quote Time.current })
+    SQL
+  end
+
+  def down
+    drop_table :regions
+  end
+end

backend/db/migrate/20260922020000_create_locales.rb

@@ -3,19 +3,32 @@ class CreateLocales < ActiveRecord::Migration[8.0]
     create_table :locales, id: { type: :string, limit: 32 }, primary_key: :code do |t|
       t.string :language_code, limit: 16, null: false, index: true
       t.column :script_code, 'CHAR(4)', null: false
+      t.integer :region_code, limit: 2, null: false
+      t.string :variants, limit: 255, null: false, default: ''
       t.string :name, null: false
       t.datetime :deprecated_at, index: true
       t.datetime :created_at, null: false
 
       t.foreign_key :languages, column: :language_code, primary_key: :code
       t.foreign_key :scripts, column: :script_code, primary_key: :code
+      t.foreign_key :regions, column: :region_code, primary_key: :code
+      t.check_constraint ('REGEXP_LIKE(variants, ' +
+                          "'^(" +
+                          '(([a-z0-9]{5,8}|[0-9][a-z0-9]{3})' +
+                          '(-([a-z0-9]{5,8}|[0-9][a-z0-9]{3}))*' +
+                          '(-x(-[a-z0-9]{1,8})+)?)' +
+                          '|(x(-[a-z0-9]{1,8})+)' +
+                          ")?$', 'c')"),
+                         name: 'locales_variants_check'
+
+      t.index [:language_code, :script_code, :region_code, :variants], unique: true
     end
 
     execute <<~SQL
       INSERT INTO
-        locales(code, language_code, script_code, name, created_at)
+        locales(code, language_code, script_code, region_code, name, created_at)
       VALUES
-        ('ja', 'ja', 'Jpan', '日本語', #{ connection.quote Time.current })
+        ('ja', 'ja', 'Jpan', 392, '日本語', #{ connection.quote Time.current })
     SQL
   end
 

backend/db/migrate/20260922030000_add_columns_to_tag_names.rb

@@ -8,7 +8,7 @@ class AddColumnsToTagNames < ActiveRecord::Migration[8.0]
     add_column :tag_names, :primary_flg, :boolean,
                null: false, after: :script_code, default: true
     add_column :tag_names, :auto_generated, :boolean,
-               null: false, default: true, after: :primary_flg
+               null: false, default: false, after: :primary_flg
 
     add_foreign_key :tag_names, :languages, column: :language_code, primary_key: :code
     add_foreign_key :tag_names, :scripts, column: :script_code, primary_key: :code
@@ -41,9 +41,16 @@ class AddColumnsToTagNames < ActiveRecord::Migration[8.0]
     add_column :tag_names, :primary_tag_id, :bigint,
                as: 'CASE WHEN primary_flg THEN tag_id ELSE NULL END'
     add_index :tag_names, [:primary_tag_id, :language_code], unique: true
+
+    add_check_constraint :tag_names,
+                         'primary_flg OR (NOT auto_generated)',
+                         name: 'chk_tag_names_auto_generated_primary'
   end
 
   def down
+    remove_check_constraint :tag_names,
+                            name: 'chk_tag_names_auto_generated_primary'
+
     remove_index :tag_names, [:primary_tag_id, :language_code]
     remove_column :tag_names, :primary_tag_id
 

backend/db/migrate/20260922040000_add_names_to_tag_versions.rb

@@ -10,10 +10,7 @@ class AddNamesToTagVersions < ActiveRecord::Migration[8.0]
     say_with_time 'Backfilling multilingual tag version names' do
       TagVersion.find_each do |version|
         aliases = version.aliases.to_s.split.filter_map do |name|
-          name.present? &&
-              { name:,
-                script_code: 'Jpan',
-                auto_generated: false }
+          name.present? && { name:, script_code: 'Jpan' }
         end
         names = { ja: { name: version.name,
                         script_code: 'Jpan',
@@ -23,10 +20,49 @@ class AddNamesToTagVersions < ActiveRecord::Migration[8.0]
       end
     end
 
+    add_names_constraint!
+
     change_column_null :tag_versions, :names, false
   end
 
   def down
+    remove_check_constraint :tag_versions,
+                            name: 'chk_tag_versions_names_schema'
+
     remove_column :tag_versions, :names
   end
+
+  private
+
+  def add_names_constraint!
+    schema = { type: 'object',
+               minProperties: 1,
+               patternProperties: { '^.{1,16}$': name_schema },
+               additionalProperties: false }
+
+    quoted_schema = connection.quote(JSON.generate(schema))
+
+    add_check_constraint :tag_versions,
+                         "JSON_SCHEMA_VALID(#{ quoted_schema }, names)",
+                         name: 'chk_tag_versions_names_schema'
+  end
+
+  def name_schema
+    { type: 'object',
+      required: ['name', 'script_code', 'auto_generated', 'aliases'],
+      properties: { **name_schema_base,
+                    auto_generated: { type: 'boolean' },
+                    aliases: { type: 'array',
+                               uniqueItems: true,
+                               items: { type: 'object',
+                                        required: ['name', 'script_code'],
+                                        properties: name_schema_base,
+                                        additionalProperties: false } } },
+      additionalProperties: false }
+  end
+
+  def name_schema_base
+    { name: { type: 'string', minLength: 1, maxLength: 255 },
+      script_code: { type: 'string', pattern: '^[A-Z][a-z]{3}$' } }
+  end
 end

backend/db/schema.rb

@@ -148,12 +148,17 @@ ActiveRecord::Schema[8.0].define(version: 2026_09_22_040000) do
   create_table "locales", primary_key: "code", id: { type: :string, limit: 32 }, charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
     t.string "language_code", limit: 16, null: false
     t.string "script_code", limit: 4, null: false
+    t.integer "region_code", limit: 2, null: false
+    t.string "variants", default: "", null: false
     t.string "name", null: false
     t.datetime "deprecated_at"
     t.datetime "created_at", null: false
     t.index ["deprecated_at"], name: "index_locales_on_deprecated_at"
+    t.index ["language_code", "script_code", "region_code", "variants"], name: "idx_on_language_code_script_code_region_code_varian_b0ba85c39a", unique: true
     t.index ["language_code"], name: "index_locales_on_language_code"
+    t.index ["region_code"], name: "fk_rails_175159992c"
     t.index ["script_code"], name: "fk_rails_0b74ce96a8"
+    t.check_constraint "regexp_like(`variants`,_utf8mb4'^(([a-z0-9]{5,8}|[0-9][a-z0-9]{3})(-([a-z0-9]{5,8}|[0-9][a-z0-9]{3}))*)?$',_utf8mb4'c')", name: "locales_variants_check"
   end
 
   create_table "material_export_items", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
@@ -406,11 +411,22 @@ ActiveRecord::Schema[8.0].define(version: 2026_09_22_040000) do
     t.check_constraint "`version_no` > 0", name: "chk_posts_version_no_positive"
   end
 
+  create_table "regions", primary_key: "code", id: { type: :integer, limit: 2 }, charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
+    t.string "alpha_code", limit: 2
+    t.string "name", null: false
+    t.datetime "deprecated_at"
+    t.datetime "created_at", null: false
+    t.index ["alpha_code"], name: "index_regions_on_alpha_code", unique: true
+    t.index ["deprecated_at"], name: "index_regions_on_deprecated_at"
+    t.check_constraint "regexp_like(`alpha_code`,_utf8mb4'^[A-Z]{2}$',_utf8mb4'c')", name: "regions_alpha_code_check"
+  end
+
   create_table "scripts", primary_key: "code", id: { type: :string, limit: 4 }, charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
     t.string "name", null: false
     t.datetime "deprecated_at"
     t.datetime "created_at", null: false
     t.index ["deprecated_at"], name: "index_scripts_on_deprecated_at"
+    t.check_constraint "regexp_like(`code`,_utf8mb4'^[A-Z][a-z]{3}$',_utf8mb4'c')", name: "scripts_code_check"
   end
 
   create_table "settings", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
@@ -450,7 +466,7 @@ ActiveRecord::Schema[8.0].define(version: 2026_09_22_040000) do
     t.string "name", null: false
     t.string "script_code", limit: 4, null: false
     t.boolean "primary_flg", null: false
-    t.boolean "auto_generated", default: true, null: false
+    t.boolean "auto_generated", default: false, null: false
     t.bigint "canonical_id"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
@@ -460,6 +476,7 @@ ActiveRecord::Schema[8.0].define(version: 2026_09_22_040000) do
     t.index ["primary_tag_id", "language_code"], name: "index_tag_names_on_primary_tag_id_and_language_code", unique: true
     t.index ["script_code"], name: "fk_rails_dd783b3d1c"
     t.index ["tag_id"], name: "index_tag_names_on_tag_id"
+    t.check_constraint "(0 <> `primary_flg`) or (0 = `auto_generated`)", name: "chk_tag_names_auto_generated_primary"
   end
 
   create_table "tag_similarities", primary_key: ["tag_id", "target_tag_id"], charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
@@ -487,6 +504,7 @@ ActiveRecord::Schema[8.0].define(version: 2026_09_22_040000) do
     t.index ["tag_id", "created_at"], name: "index_tag_versions_on_tag_id_and_created_at", order: { created_at: :desc }
     t.index ["tag_id", "version_no"], name: "index_tag_versions_on_tag_id_and_version_no", unique: true
     t.check_constraint "`version_no` > 0", name: "tag_versions_version_no_positive"
+    t.check_constraint "json_schema_valid(_utf8mb4'{\"type\":\"object\",\"minProperties\":1,\"patternProperties\":{\"^.{1,16}$\":{\"type\":\"object\",\"required\":[\"name\",\"script_code\",\"auto_generated\",\"aliases\"],\"properties\":{\"name\":{\"type\":\"string\",\"minLength\":1,\"maxLength\":255},\"script_code\":{\"type\":\"string\",\"pattern\":\"^[A-Z][a-z]{3}$\"},\"auto_generated\":{\"type\":\"boolean\"},\"aliases\":{\"type\":\"array\",\"uniqueItems\":true,\"items\":{\"type\":\"object\",\"required\":[\"name\",\"script_code\"],\"properties\":{\"name\":{\"type\":\"string\",\"minLength\":1,\"maxLength\":255},\"script_code\":{\"type\":\"string\",\"pattern\":\"^[A-Z][a-z]{3}$\"}},\"additionalProperties\":false}}},\"additionalProperties\":false}},\"additionalProperties\":false}',`names`)", name: "chk_tag_versions_names_schema"
   end
 
   create_table "tags", charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci", force: :cascade do |t|
@@ -737,6 +755,7 @@ ActiveRecord::Schema[8.0].define(version: 2026_09_22_040000) do
   add_foreign_key "gekanator_questions", "gekanator_question_suggestions"
   add_foreign_key "gekanator_questions", "users", column: "created_by_id"
   add_foreign_key "locales", "languages", column: "language_code", primary_key: "code"
+  add_foreign_key "locales", "regions", column: "region_code", primary_key: "code"
   add_foreign_key "locales", "scripts", column: "script_code", primary_key: "code"
   add_foreign_key "material_export_items", "materials"
   add_foreign_key "material_export_items", "users", column: "created_by_user_id"