initial rebuild from v1

db/migrate/20210422160151_create_string_translations.rb

@@ -0,0 +1,14 @@
+class CreateStringTranslations < ActiveRecord::Migration[6.1]
+  def change
+    create_table :mobility_string_translations do |t|
+      t.string :locale, null: false
+      t.string :key, null: false
+      t.string :value
+      t.references :translatable, polymorphic: true, index: false
+      t.timestamps null: false
+    end
+    add_index :mobility_string_translations, [:translatable_id, :translatable_type, :locale, :key], unique: true, name: :index_mobility_string_translations_on_keys
+    add_index :mobility_string_translations, [:translatable_id, :translatable_type, :key], name: :index_mobility_string_translations_on_translatable_attribute
+    add_index :mobility_string_translations, [:translatable_type, :key, :value, :locale], name: :index_mobility_string_translations_on_query_keys
+  end
+end