title: can't make code generator with PostgreSQL
body: <p>i have a problem in using code generator with PostgreSQL database, i've make configuration in main.php..
  ...</p>
  
  <pre><code>'modules'=&gt;array(
  
      'gii'=&gt;array(
          'class'=&gt;'system.gii.GiiModule',
          'password'=&gt;'123wasis85',
          'ipFilters'=&gt;array('127.0.0.1','::1'),
      ),
  
  ),
  </code></pre>
  
  <p>...</p>
  
  <pre><code>'db'=&gt;array(
          'connectionString' =&gt; 'pgsql:host=127.0.0.1;port=5432;dbname=yii_first',
  
              'emulatePrepare' =&gt; true,
  
              'username' =&gt; 'postgres',
  
              'password' =&gt; 'anghauz',
  
              'charset' =&gt; 'utf8',
          ),
  </code></pre>
  
  <p>...</p>
  
  <p>but it still making error result when i used crud generation, this is the error..:</p>
  
  <p>...</p>
  
  <pre><code>CDbConnection failed to open the DB connection: could not find driver
  
  C:\BitNami\apache2\htdocs\yii\framework\gii\generators\crud\CrudCode.php(44)
  </code></pre>
  
  <p>...</p>
  
  <p>i make it in localhost n using bitnami..</p>
  
  <p>please help me guys for the solutions..</p>