Added DB Access + Error page

demos/blog/protected/components/UserIdentity.php

@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * UserIdentity represents the data needed to identity a user.
+ * It contains the authentication method that checks if the provided
+ * data can identity the user.
+ */
+class UserIdentity extends CUserIdentity
+{
+	private $_id;
+
+	/**
+	 * Authenticates a user.
+	 * @return boolean whether authentication succeeds.
+	 */
+	public function authenticate()
+	{
+		$user=User::model()->find('LOWER(username)=?',array(strtolower($this->username)));
+		if($user===null)
+			$this->errorCode=self::ERROR_USERNAME_INVALID;
+		else if(!$user->validatePassword($this->password))
+			$this->errorCode=self::ERROR_PASSWORD_INVALID;
+		else
+		{
+			$this->_id=$user->id;
+			$this->username=$user->username;
+			$this->errorCode=self::ERROR_NONE;
+		}
+		return $this->errorCode==self::ERROR_NONE;
+	}
+
+	/**
+	 * @return integer the ID of the user record
+	 */
+	public function getId()
+	{
+		return $this->_id;
+	}
+}