Add Language model and LanguageController

db/migrate/20231025010204_create_languages.rb

@@ -0,0 +1,9 @@
+class CreateLanguages < ActiveRecord::Migration[7.1]
+  def change
+    create_table :languages do |t|
+      t.string :name
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20231025010226_add_language_fields.rb

@@ -0,0 +1,17 @@
+class AddLanguageFields < ActiveRecord::Migration[7.1]
+  def change
+    create_table :language do |t|
+      t.string :name
+
+      t.timestamps
+    end
+
+    change_table :definitions do |t|
+      t.references :language, null: false, foreign_key: true
+    end
+
+    change_table :part_of_speeches do |t|
+      t.references :language, null: false, foreign_key: true
+    end
+  end
+end

db/schema.rb

@@ -10,21 +10,37 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.1].define(version: 2023_10_13_214519) do
+ActiveRecord::Schema[7.1].define(version: 2023_10_25_010226) do
   create_table "definitions", force: :cascade do |t|
     t.string "pos"
     t.string "definition"
     t.integer "word_id", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.integer "language_id", null: false
+    t.index ["language_id"], name: "index_definitions_on_language_id"
     t.index ["word_id"], name: "index_definitions_on_word_id"
   end
 
+  create_table "language", force: :cascade do |t|
+    t.string "name"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+  create_table "languages", force: :cascade do |t|
+    t.string "name"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
   create_table "part_of_speeches", force: :cascade do |t|
     t.string "pos"
     t.string "definition"
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.integer "language_id", null: false
+    t.index ["language_id"], name: "index_part_of_speeches_on_language_id"
   end
 
   create_table "users", force: :cascade do |t|
@@ -45,5 +61,7 @@ ActiveRecord::Schema[7.1].define(version: 2023_10_13_214519) do
     t.datetime "updated_at", null: false
   end
 
+  add_foreign_key "definitions", "languages"
   add_foreign_key "definitions", "words"
+  add_foreign_key "part_of_speeches", "languages"
 end