Описана базовая миграция, добавлена модель аккаунта, добавлена модель авторизации, написаны первичные тесты для этой модели, добавлен модуль авторизации, настроен базовый контроллер. Короче много чего сделано

api/models/LoginForm.php

@@ -0,0 +1,79 @@
+<?php
+namespace api\models;
+
+use common\models\Account;
+use Yii;
+use yii\base\Model;
+
+/**
+ * Login form
+ */
+class LoginForm extends Model
+{
+    public $username;
+    public $password;
+    public $rememberMe = true;
+
+    private $_user;
+
+
+    /**
+     * @inheritdoc
+     */
+    public function rules()
+    {
+        return [
+            // username and password are both required
+            [['username', 'password'], 'required'],
+            // rememberMe must be a boolean value
+            ['rememberMe', 'boolean'],
+            // password is validated by validatePassword()
+            ['password', 'validatePassword'],
+        ];
+    }
+
+    /**
+     * Validates the password.
+     * This method serves as the inline validation for password.
+     *
+     * @param string $attribute the attribute currently being validated
+     * @param array $params the additional name-value pairs given in the rule
+     */
+    public function validatePassword($attribute, $params)
+    {
+        if (!$this->hasErrors()) {
+            $user = $this->getUser();
+            if (!$user || !$user->validatePassword($this->password)) {
+                $this->addError($attribute, 'Incorrect username or password.');
+            }
+        }
+    }
+
+    /**
+     * Logs in a user using the provided username and password.
+     *
+     * @return boolean whether the user is logged in successfully
+     */
+    public function login()
+    {
+        if ($this->validate()) {
+            return Yii::$app->user->login($this->getUser(), $this->rememberMe ? 3600 * 24 * 30 : 0);
+        } else {
+            return false;
+        }
+    }
+
+    /**
+     * Finds user by [[username]]
+     *
+     * @return Account|null
+     */
+    protected function getUser()
+    {
+        if ($this->_user === null) {
+            $this->_user = Account::findByEmail($this->username);
+        }
+
+        return $this->_user;
+    }
+}

api/models/PasswordResetRequestForm.php

@@ -1,7 +1,7 @@
 <?php
 namespace api\models;
 
-use common\models\User;
+use common\models\Account;
 use yii\base\Model;
 
 /**
@@ -22,7 +22,7 @@ class PasswordResetRequestForm extends Model
             ['email', 'email'],
             ['email', 'exist',
                 'targetClass' => '\common\models\User',
-                'filter' => ['status' => User::STATUS_ACTIVE],
+                'filter' => ['status' => Account::STATUS_ACTIVE],
                 'message' => 'There is no user with such email.'
             ],
         ];
@@ -35,14 +35,14 @@ class PasswordResetRequestForm extends Model
      */
     public function sendEmail()
     {
-        /* @var $user User */
-        $user = User::findOne([
-            'status' => User::STATUS_ACTIVE,
+        /* @var $user Account */
+        $user = Account::findOne([
+            'status' => Account::STATUS_ACTIVE,
             'email' => $this->email,
         ]);
 
         if ($user) {
-            if (!User::isPasswordResetTokenValid($user->password_reset_token)) {
+            if (!Account::isPasswordResetTokenValid($user->password_reset_token)) {
                 $user->generatePasswordResetToken();
             }
 

api/models/ResetPasswordForm.php

@@ -1,7 +1,7 @@
 <?php
 namespace api\models;
 
-use common\models\User;
+use common\models\Account;
 use yii\base\InvalidParamException;
 use yii\base\Model;
 use Yii;
@@ -14,7 +14,7 @@ class ResetPasswordForm extends Model
     public $password;
 
     /**
-     * @var \common\models\User
+     * @var \common\models\Account
      */
     private $_user;
 
@@ -31,7 +31,7 @@ class ResetPasswordForm extends Model
         if (empty($token) || !is_string($token)) {
             throw new InvalidParamException('Password reset token cannot be blank.');
         }
-        $this->_user = User::findByPasswordResetToken($token);
+        $this->_user = Account::findByPasswordResetToken($token);
         if (!$this->_user) {
             throw new InvalidParamException('Wrong password reset token.');
         }

api/models/SignupForm.php

@@ -1,7 +1,7 @@
 <?php
 namespace api\models;
 
-use common\models\User;
+use common\models\Account;
 use yii\base\Model;
 use Yii;
 
@@ -39,13 +39,12 @@ class SignupForm extends Model
     /**
      * Signs user up.
      *
-     * @return User|null the saved model or null if saving fails
+     * @return Account|null the saved model or null if saving fails
      */
     public function signup()
     {
         if ($this->validate()) {
-            $user = new User();
-            $user->username = $this->username;
+            $user = new Account();
             $user->email = $this->email;
             $user->setPassword($this->password);
             $user->generateAuthKey();