Getting a particular row from database in yii - php

Question

I am working on a job site.And using Yii.I have gridview which list all the jobs posted by user,but I just want to show the jobs which are posted by a particular user.like if the user is logged in as admin then it should show only jobs posted by admin.I have tried the following things but not working.
In Controller.
//codes
public function actionViewJob() {
$user_id = Yii::app()->session['user_id'];
/* For User Authentication */
if (Yii::app()->user->getId() === null)
$this->redirect(array('site/login'));
/* For User Authentication */
$model = ViewJob::model()->find(array(
'select' => array('*'), "condition" => "user_id= $user_id",
));
$params = array('model' => $model,
);
$this->render('viewjob', $params);
}
function as search() in model ViewJob.
public function search()
{
$criteria=new CDbCriteria;
$criteria->compare('key_skills','Admin',true);
return new CActiveDataProvider('viewjob', array(
// 'criteria'=>$criteria,
'sort'=>array(
'defaultOrder'=>'key_skills ASC',
),
));
}
What am I doing wrong here.?.Its still listing the whole data.

Answer 1

Try like
$model=ViewJob::model()->findByAttributes(array('user_id'=>Yii::app()->user->id));

Answer 2

Try this
$model = ViewJob::model()->findAll("user_id=$user_id");
/*
1. find() can fetch first matched row, where as findAll() fetches all matched rows in the db table
2. "user_id=$user_id" is equals to WHERE user_id=$user_id
*/
Code improvements(Yii way)
Register user sessions as bellow
Yii::app()->user->setState('user_id',$value_variable); //Set the session
Yii::app()->user->getState('user_id'); //Get the session
You can use accessRules() for bellow code
if (Yii::app()->user->getId() === null)
$this->redirect(array('site/login'));
Like
public function accessRules()
{
return array(
array('allow',
'actions' => array('viewJob'),
'users' => array('#'),
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