add customer api

customerapi/models/LoginForm.php

@@ -0,0 +1,70 @@
+<?php
+namespace customerapi\models;
+
+use common\models\Customer;
+use Yii;
+use yii\base\Model;
+
+/**
+ * Login form
+ */
+class LoginForm extends Model
+{
+    public $username;
+    public $password;
+
+    public $customer;
+
+    /**
+     * @inheritdoc
+     */
+    public function rules()
+    {
+        return [
+            // username and password are both required
+            [['username', 'password'], 'required'],
+            // password is validated by validatePassword()
+            ['password', 'validatePassword'],
+        ];
+    }
+    
+    public function attributeLabels(){
+    	return [
+    			'username' =>Yii::t('common/site', 'Username'),
+    			'password' =>Yii::t('common/site', 'Password'),
+    	];
+    }
+
+    /**
+     * Validates the password.
+     * This method serves as the inline validation for password.
+     *
+     * @param string $attribute the attribute currently being validated
+     * @param array $params the additional name-value pairs given in the rule
+     * @throws \yii\base\InvalidConfigException
+     */
+    public function validatePassword($attribute, $params)
+    {
+        if (!$this->hasErrors()) {
+            /** @var \common\models\Customer $user */
+            $customer = $this->getCustomer();
+            if (!$customer || !$customer->validatePassword($this->password)) {
+                $this->addError($attribute, 'Incorrect username or password.');
+            }
+        }
+    }
+
+
+    /**
+     * Finds user by [[username]]
+     *
+     * @return Customer|null
+     */
+    public function getCustomer()
+    {
+        if ( $this->customer === null ){
+            $this->customer =  Customer::findIdentity( $this->username );
+        }
+        return  $this->customer;
+    }
+}