rubocop corrections

db/migrate/20210319142051_create_authors.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class CreateAuthors < ActiveRecord::Migration[6.1]
   def change
     create_table :authors do |t|
@@ -7,6 +9,6 @@ class CreateAuthors < ActiveRecord::Migration[6.1]
       t.timestamps
     end
 
-    add_index :authors, [ :first_name, :last_name ]
+    add_index :authors, %i[first_name last_name]
   end
 end

db/migrate/20210319142054_create_books.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class CreateBooks < ActiveRecord::Migration[6.1]
   def change
     create_table :books do |t|

db/migrate/20210319142059_create_authors_books.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class CreateAuthorsBooks < ActiveRecord::Migration[6.1]
   def change
     create_table :authors_books do |t|

db/migrate/20210320130542_create_users.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class CreateUsers < ActiveRecord::Migration[6.1]
   def change
     create_table :users do |t|

db/migrate/20210320212922_change_username_to_email.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ChangeUsernameToEmail < ActiveRecord::Migration[6.1]
   def change
     rename_column :users, :username, :email

db/migrate/20210320233401_add_password_recovery_code_to_users.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class AddPasswordRecoveryCodeToUsers < ActiveRecord::Migration[6.1]
   def change
     add_column :users, :password_recovery_code, :string

db/migrate/20210321093857_change_password_recovery_code_to_recovery_password_digest.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ChangePasswordRecoveryCodeToRecoveryPasswordDigest < ActiveRecord::Migration[6.1]
   def change
     rename_column :users, :password_recovery_code, :recovery_password_digest

db/migrate/20210321135711_add_role_to_users.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class AddRoleToUsers < ActiveRecord::Migration[6.1]
   def change
     add_column :users, :role, :integer

db/migrate/20210321213901_add_status_to_users.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class AddStatusToUsers < ActiveRecord::Migration[6.1]
   def change
     add_column :users, :status, :integer

db/migrate/20210321225317_create_audit_records.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class CreateAuditRecords < ActiveRecord::Migration[6.1]
   def change
     create_table :audit_records do |t|

db/migrate/20210321235625_add_quantity_to_books.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class AddQuantityToBooks < ActiveRecord::Migration[6.1]
   def change
     add_column :books, :quantity, :integer

db/migrate/20210322002803_create_books_users.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class CreateBooksUsers < ActiveRecord::Migration[6.1]
   def change
     create_table :books_users do |t|