Execute code if data is updated afterSave

Yii 1.1 General Discussion
1

I would like to execute a code if I detect that the user has changed details about


$model->occupant_number;

How can I implement this? How do I get after update the OLD and NEW values.

2

Your question is very vague so you will need to provide more information if you want a good answer.

It sounds like you need to set up a behavior but I can’t be sure base on what info you provided.

doodle

3

I want this




onAfterSave


if ($this->current_occupant_number!=$this->previous_occupant_number) { 

   CModel::updateStats()

}
4

Yes you need to implement a behavior, I will paste in some code from another project.

In your model you need to put in a behaviors function


public function behaviors()

	{


        return array('SaveFileBehavior' => array('class' => 'SaveFileBehavior',

                                                 'nameField' => 'EventPhoto', // field in table which stores the file name

                                                 'pathField' => null, 

                                                 'saveName' => true, 

                                                 'idField'=>'EventID',

                                                 'webRoot'=>dirname(__FILE__).DIRECTORY_SEPARATOR.'..'.DIRECTORY_SEPARATOR.'..'.DIRECTORY_SEPARATOR.'..',

                                                 'assetsPath'=>'eventImage'

                                                                           )

                   );

	}

This points to a file "protected/components/SaveFileBehavior.php"

This file extends CActiveRecord


class SaveFileBehavior extends CActiveRecordBehavior

an example function within this file


public function afterSave($event)

{

        //If if the upload was successfull save it to disk

if ($this->upload != null)

    {

// Name of the model that will be used to create the folder.

    $tableName = $event->sender->tableName();

    $id=$this->idField;

    $uploadFile = Yii::app()->basePath . '/' . $this->folder . '/' . $tableName . '/' . $event->sender->$id . '/' . $this->originalName.'.'.$this->upload->getExtensionName();

    $path = dirname($uploadFile);

//if already it exists, to clean the directory of current image


if (is_dir($path))

        {

            advancedRmdir($path);

        }

   mkdir($path, 0777, true);


$assets = $this->webRoot .DIRECTORY_SEPARATOR. $this->assetsPath.DIRECTORY_SEPARATOR. $event->sender->$id;


if (is_dir($assets))

        {

            advancedRmdir($assets);

        } else {      

    mkdir($assets, 0777, true);

        }

// save the uploaded file

$this->upload->saveAs($uploadFile);

// create a thumbnail

if($this->createThumb){

$thumb = Yii::app()->thumb;

$thumb->image = $uploadFile;

$thumb->createThumb();

$thumb->directory = $path.'/';

$thumb->save();

}

// create a resized image

if($this->createResize){

$resized = Yii::app()->resized;

$resized->image = $uploadFile;;

$resized->createThumb();

$resized->directory = $path.'/';

$resized->save();

}

// copy into published directory

smartCopy($path,$assets);


    }

}

Check out this info in the guide.

hope this helps

doodle

5

I will not reuse this code elsewhere so there is no point for behavior for now. Thanks for sharing the code, the behavior.

I do have problems detecting if the value has actually been changed.

6

you could save your current attributes in a new property, use ActiveRecord::afterFind()

then compare old and new values in ActiveRecord::beforeSave() or ActiveRecord::afterSave()