What does CDBException mean here and how do I resolve it? - yii

Question

Please, I am totally new to Yii1.1, I am following a video tutorial and I have benn trying to follow up closely. I am trying to create and update the album model as indicated in the video tutorial. I typed everything the presenter typed: my codes are given below:
The AlbumController
class AlbumController extends Controller
{
/**
* #var string the default layout for the views. Defaults to '//layouts/column2', meaning
* using two-column layout. See 'protected/views/layouts/column2.php'.
*/
public $layout='//layouts/column2';
/**
* #return array action filters
*/
public function filters()
{
return array(
'accessControl', // perform access control for CRUD operations
'postOnly + delete', // we only allow deletion via POST request
);
}
/**
* Specifies the access control rules.
* This method is used by the 'accessControl' filter.
* #return array access control rules
*/
public function accessRules()
{
return array(
array('allow', // allow all users to perform 'index' and 'view' actions
'actions'=>array('index','view'),
'users'=>array('*'),
),
array('allow', // allow authenticated user to perform 'create' and 'update' actions
'actions'=>array('create','update'),
'users'=>array('#'),
),
array('allow', // allow admin user to perform 'admin' and 'delete' actions
'actions'=>array('admin','delete'),
'users'=>array('admin'),
),
array('deny', // deny all users
'users'=>array('*'),
),
);
}
/**
* Displays a particular model.
* #param integer $id the ID of the model to be displayed
*/
public function actionView($id)
{
$this->render('view',array(
'model'=>$this->loadModel($id),
));
}
/**
* Creates a new model.
* If creation is successful, the browser will be redirected to the 'view' page.
*/
public function actionCreate()
{
$model=new Album;
// Uncomment the following line if AJAX validation is needed
$this->performAjaxValidation($model);
if(isset($_POST['Album']))
{
$model->attributes=$_POST['Album'];
if($model->save()){
//$this->redirect(array('view','id'=>$model->id));
Yii::app()->user->setFlash('saved', 'Data saved!');
$this->redirect(array('update','id'=>$model->id));
}
else{
Yii::app()->user->setFlash('failure', 'Data not saved!');
}
}
$this->render('create',array(
'model'=>$model,
));
}
/**
* Updates a particular model.
* If update is successful, the browser will be redirected to the 'view' page.
* #param integer $id the ID of the model to be updated
*/
public function actionUpdate($id)
{
$model=$this->loadModel($id);
// Uncomment the following line if AJAX validation is needed
$this->performAjaxValidation($model);
if(isset($_POST['Album']))
{
$model->attributes=$_POST['Album'];
if($model->save()){
//$this->redirect(array('view','id'=>$model->id));
Yii::app()->user->setFlash('saved', "Data saved!");
$this->redirect(array('update','id'=>$model->id));
}else{
Yii::app()->user->setFlash('failure', "Data not saved!");
}
}
$this->render('update',array(
'model'=>$model,
));
/**
* Deletes a particular model.
* If deletion is successful, the browser will be redirected to the 'admin' page.
* #param integer $id the ID of the model to be deleted
*/
}
public function actionDelete($id)
{
$this->loadModel($id)->delete();
// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
if(!isset($_GET['ajax']))
$this->redirect(isset($_POST['returnUrl']) ? $_POST['returnUrl'] : array('admin'));
}
/**
* Lists all models.
*/
public function actionIndex()
{
$dataProvider=new CActiveDataProvider('Album');
$this->render('index',array(
'dataProvider'=>$dataProvider,
));
}
/**
* Manages all models.
*/
public function actionAdmin()
{
$model=new Album('search');
$model->unsetAttributes(); // clear any default values
if(isset($_GET['Album']))
$model->attributes=$_GET['Album'];
$this->render('admin',array(
'model'=>$model,
));
}
/**
* Returns the data model based on the primary key given in the GET variable.
* If the data model is not found, an HTTP exception will be raised.
* #param integer $id the ID of the model to be loaded
* #return Album the loaded model
* #throws CHttpException
*/
public function loadModel($id)
{
$model=Album::model()->findByPk($id);
if($model===null)
throw new CHttpException(404,'The requested page does not exist.');
return $model;
}
/**
* Performs the AJAX validation.
* #param Album $model the model to be validated
*/
protected function performAjaxValidation($model)
{
if(isset($_POST['ajax']) && $_POST['ajax']==='album-form')
{
echo CActiveForm::validate($model);
Yii::app()->end();
}
}
}
The Album model class
/**
* This is the model class for table "tbl_album".
*
* The followings are the available columns in table 'tbl_album':
* #property integer $id
* #property string $name
* #property string $tags
* #property integer $owner_id
* #property integer $shareable
* #property string $created_dt
*
* The followings are the available model relations:
* #property User $owner
* #property Photo[] $photos
*/
class Album extends CActiveRecord
{
/**
* #return string the associated database table name
*/
public function tableName()
{
return 'tbl_album';
}
/**
* #return array validation rules for model attributes.
*/
public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(
array('owner_id, shareable, category_id', 'numerical', 'integerOnly'=>true),
array('name, tags', 'length', 'max'=>255),
array('description', 'length', 'max'=>1024),
array('description', 'match', 'pattern'=>'/[\w]+/u'),// \-\_\'\ \,\p{L}0-!
// The following rule is used by search().
// #todo Please remove those attributes that should not be searched.
array('id, name, tags, owner_id, shareable, created_dt', 'safe', 'on'=>'search'),
);
}
/**
* #return array relational rules.
*/
//defined function beforeSave()..
protected function beforeSave(){
if(parent::beforeSave()){
if($this->isNewRecord){
$this->created_dt = new CDbExpression("NOW()");
$this->owner_id = Yii::app()->user->id;
}
return true;
}else
return false;
}
public function scopes(){
return array(
'shareable'=>array(
'order'=>'created_dt DESC',
'condition'=>'shareable=1',
)
);
}
public function relations()
{
// NOTE: you may need to adjust the relation name and the related
// class name for the relations automatically generated below.
return array(
'owner' => array(self::BELONGS_TO, 'User', 'owner_id'),
'photos' => array(self::HAS_MANY, 'Photo', 'album_id'),
);
}
/**
* #return array customized attribute labels (name=>label)
*/
public function attributeLabels()
{
return array(
'id' => 'ID',
'name' => 'Name',
'tags' => 'Tags',
'owner_id' => 'Owner',
'category_id'=>'Category',
'description'=>'Description',
'shareable' => 'Shareable',
'created_dt' => 'Created Dt',
);
}
/**
* Retrieves a list of models based on the current search/filter conditions.
*
* Typical usecase:
* - Initialize the model fields with values from filter form.
* - Execute this method to get CActiveDataProvider instance which will filter
* models according to data in model fields.
* - Pass data provider to CGridView, CListView or any similar widget.
*
* #return CActiveDataProvider the data provider that can return the models
* based on the search/filter conditions.
*/
public function search()
{
// #todo Please modify the following code to remove attributes that should not be searched.
$criteria=new CDbCriteria;
$criteria->compare('name',$this->name,true);
$criteria->compare('tags',$this->tags,true);
$criteria->compare('description',$this->description);
return new CActiveDataProvider($this, array(
'criteria'=>$criteria,
));
}
/**
* Returns the static model of the specified AR class.
* Please note that you should have this exact method in all your CActiveRecord descendants!
* #param string $className active record class name.
* #return Album the static model class
*/
public static function model($className=__CLASS__)
{
return parent::model($className);
}
}
The Photo Model Class
/**
* This is the model class for table "tbl_photo".
*
* The followings are the available columns in table 'tbl_photo':
* #property integer $id
* #property integer $album_id
* #property string $filename
* #property string $caption
* #property string $alt_text
* #property string $tags
* #property integer $sort_order
* #property string $created_dt
* #property string $lastupdate_dt
*
* The followings are the available model relations:
* #property Comment[] $comments
* #property Album $album
*/
class Photo extends CActiveRecord
{
private $_uploads;
/**
* #return string the associated database table name
*/
public function tableName()
{
return 'tbl_photo';
}
/**
* #return array validation rules for model attributes.
*/
public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(
array('album_id, sort_order', 'numerical', 'integerOnly'=>true),
array('filename', 'length', 'max'=>500),
array('tags', 'length', 'max'=>256),
array('caption, alt_text, created_dt, lastupdate_dt', 'safe'),
// The following rule is used by search().
// #todo Please remove those attributes that should not be searched.
array('id, album_id, filename, caption, alt_text, tags, sort_order, created_dt, lastupdate_dt', 'safe', 'on'=>'search'),
);
}
/**
* #return array relational rules.
*/
public function relations()
{
// NOTE: you may need to adjust the relation name and the related
// class name for the relations automatically generated below.
return array(
'comments' => array(self::HAS_MANY, 'Comment', 'photo_id'),
'album' => array(self::BELONGS_TO, 'Album', 'album_id'),
);
}
/**
* #return array customized attribute labels (name=>label)
*/
public function attributeLabels()
{
return array(
'id' => 'ID',
'album_id' => 'Album',
'filename' => 'Filename',
'caption' => 'Caption',
'alt_text' => 'Alt Text',
'tags' => 'Tags',
'sort_order' => 'Sort Order',
'created_dt' => 'Created Dt',
'lastupdate_dt' => 'Lastupdate Dt',
);
}
public function getImageParam(){
if(empty($this->_uploads)){
$this->_uploads = Yii::app()->params['uploads']. "/";
return $this->_uploads;
}
}
public function getUrl(){
return $this->getImageParam()."uploads/".CHtml::encode($this->filename);
}
public function getThumb(){
return $this->getImageParam()."thumbs/".CHtml::encode($this->filename);
}
/**
* Retrieves a list of models based on the current search/filter conditions.
*
* Typical usecase:
* - Initialize the model fields with values from filter form.
* - Execute this method to get CActiveDataProvider instance which will filter
* models according to data in model fields.
* - Pass data provider to CGridView, CListView or any similar widget.
*
* #return CActiveDataProvider the data provider that can return the models
* based on the search/filter conditions.
*/
public function search()
{
// #todo Please modify the following code to remove attributes that should not be searched.
$criteria=new CDbCriteria;
$criteria->compare('id',$this->id);
$criteria->compare('album_id',$this->album_id);
$criteria->compare('filename',$this->filename,true);
$criteria->compare('caption',$this->caption,true);
$criteria->compare('alt_text',$this->alt_text,true);
$criteria->compare('tags',$this->tags,true);
$criteria->compare('sort_order',$this->sort_order);
$criteria->compare('created_dt',$this->created_dt,true);
$criteria->compare('lastupdate_dt',$this->lastupdate_dt,true);
return new CActiveDataProvider($this, array(
'criteria'=>$criteria,
));
}
/**
* Returns the static model of the specified AR class.
* Please note that you should have this exact method in all your CActiveRecord descendants!
* #param string $className active record class name.
* #return Photo the static model class
*/
public static function model($className=__CLASS__)
{
return parent::model($className);
}
}
The Photo Model
/**
* This is the model class for table "tbl_photo".
*
* The followings are the available columns in table 'tbl_photo':
* #property integer $id
* #property integer $album_id
* #property string $filename
* #property string $caption
* #property string $alt_text
* #property string $tags
* #property integer $sort_order
* #property string $created_dt
* #property string $lastupdate_dt
*
* The followings are the available model relations:
* #property Comment[] $comments
* #property Album $album
*/
class Photo extends CActiveRecord
{
private $_uploads;
/**
* #return string the associated database table name
*/
public function tableName()
{
return 'tbl_photo';
}
/**
* #return array validation rules for model attributes.
*/
public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(
array('album_id, sort_order', 'numerical', 'integerOnly'=>true),
array('filename', 'length', 'max'=>500),
array('tags', 'length', 'max'=>256),
array('caption, alt_text, created_dt, lastupdate_dt', 'safe'),
// The following rule is used by search().
// #todo Please remove those attributes that should not be searched.
array('id, album_id, filename, caption, alt_text, tags, sort_order, created_dt, lastupdate_dt', 'safe', 'on'=>'search'),
);
}
/**
* #return array relational rules.
*/
public function relations()
{
// NOTE: you may need to adjust the relation name and the related
// class name for the relations automatically generated below.
return array(
'comments' => array(self::HAS_MANY, 'Comment', 'photo_id'),
'album' => array(self::BELONGS_TO, 'Album', 'album_id'),
);
}
/**
* #return array customized attribute labels (name=>label)
*/
public function attributeLabels()
{
return array(
'id' => 'ID',
'album_id' => 'Album',
'filename' => 'Filename',
'caption' => 'Caption',
'alt_text' => 'Alt Text',
'tags' => 'Tags',
'sort_order' => 'Sort Order',
'created_dt' => 'Created Dt',
'lastupdate_dt' => 'Lastupdate Dt',
);
}
public function getImageParam(){
if(empty($this->_uploads)){
$this->_uploads = Yii::app()->params['uploads']. "/";
return $this->_uploads;
}
}
public function getUrl(){
return $this->getImageParam()."uploads/".CHtml::encode($this->filename);
}
public function getThumb(){
return $this->getImageParam()."thumbs/".CHtml::encode($this->filename);
}
/**
* Retrieves a list of models based on the current search/filter conditions.
*
* Typical usecase:
* - Initialize the model fields with values from filter form.
* - Execute this method to get CActiveDataProvider instance which will filter
* models according to data in model fields.
* - Pass data provider to CGridView, CListView or any similar widget.
*
* #return CActiveDataProvider the data provider that can return the models
* based on the search/filter conditions.
*/
public function search()
{
// #todo Please modify the following code to remove attributes that should not be searched.
$criteria=new CDbCriteria;
$criteria->compare('id',$this->id);
$criteria->compare('album_id',$this->album_id);
$criteria->compare('filename',$this->filename,true);
$criteria->compare('caption',$this->caption,true);
$criteria->compare('alt_text',$this->alt_text,true);
$criteria->compare('tags',$this->tags,true);
$criteria->compare('sort_order',$this->sort_order);
$criteria->compare('created_dt',$this->created_dt,true);
$criteria->compare('lastupdate_dt',$this->lastupdate_dt,true);
return new CActiveDataProvider($this, array(
'criteria'=>$criteria,
));
}
/**
* Returns the static model of the specified AR class.
* Please note that you should have this exact method in all your CActiveRecord descendants!
* #param string $className active record class name.
* #return Photo the static model class
*/
public static function model($className=__CLASS__)
{
return parent::model($className);
}
}
I am getting this error: CDbCommand failed to execute the SQL statement: SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (school2go2.tbl_album, CONSTRAINTtbl_album_ibfk_1FOREIGN KEY (owner_id) REFERENCEStbl_user(id) ON DELETE NO ACTION ON UPDATE NO ACTION). The SQL statement executed was: INSERT INTOtbl_album(name,tags,description,shareable,created_dt,owner_id) VALUES (:yp0, :yp1, :yp2, :yp3, NOW(), :yp4)
Please I am totally new to yii and even StackOverflow, pardon my inappropriate editing.I am still learning.

Answer 1

The error translates to: You are trying to insert an album without a corresponding owner.
Impossible to help more without knowing how you got that error.