PHP Yii SWFUpload 302

Possible Root Cause:
SWFUpload opens a new PHP session when connecting to Apache and uploading file(s) to web server's file system.


Solution:
1. Remember to pass in postParams
    $this->widget('application.extensions.swfupload.CSwfUpload', array(
        'jsHandlerUrl'=>'js/swfupload/handlers.js',
        'postParams'=>array('PHPSESSID'=>session_id()),
        'config'=>array( ...


2. In the Controller, modify accessRules() to allow any user to call the action that is going to be used by SWFUpload.
    Below is are sample codes in my View file:
    
$uploadUrl=$this->createUrl('photo/swfupload');
$this->widget('application.extensions.swfupload.CSwfUpload', array(
   'jsHandlerUrl'=>'js/swfupload/handlers.js',
   'postParams'=>array('PHPSESSID'=>session_id()),
   'config'=>array(
'debug'=>false,
       'use_query_string'=>true,
       'upload_url'=>$uploadUrl,
       'file_size_limit'=>'5 MB',
       'file_types'=>'*.jpg;*.png;*.gif',
       'file_types_description'=>'Image Files',
       'file_upload_limit'=>0,
       'file_queue_error_handler'=>'js:fileQueueError',
       'file_dialog_complete_handler'=>'js:fileDialogComplete',
       'upload_progress_handler'=>'js:uploadProgress',
       'upload_error_handler'=>'js:uploadError',
       'upload_success_handler'=>'js:uploadSuccess',
       'upload_complete_handler'=>'js:uploadComplete',
       'custom_settings'=>array('progressTarget'=>'divFileProgressContainer','cancelButtonId'=>'btnCancel'),
       'button_placeholder_id'=>'swfupload',
        'button_image_url'=>'js/swfupload/images/TestImageNoText_100x20.png',
       'button_width'=>50,
       'button_height'=>20,
       'button_text'=>'  Select File(s)  ',
       'button_text_style'=>'.button { font-family: "Lucida Sans Unicode", "Lucida Grande", sans-serif; font-size: 9pt; text-align: center; }',
       'button_text_top_padding'=>0,
       'button_text_left_padding'=>0,
       'button_window_mode'=>'js:SWFUpload.WINDOW_MODE.TRANSPARENT',
       'button_cursor'=>'js:SWFUpload.CURSOR.HAND',
       ),
   )
);
?>


$uploadUrl); ?>

   

   

   

   

    As you can see, photo/swfupload is my controller/action pair。
    So, in photoController file, we shall change the accessRules() function to allow anyone to call actionSwfupload(). Below are my sample codes:
    public function accessRules()
{
return array(
array('allow',  // allow all users to perform 'index' and 'view' actions
'actions'=>array('index','view','swfupload'),
'users'=>array('*'),
),
);
}


Please feel free to share your experience on this issue.

PHP Yii Complex SQL

Yii allows developers to construct SQL statement.
This will help advanced developer to tune his/her SQL query (by using appropriate indexes).


Example:
$connection=Yii::app()->db;

$sql = "SELECT t1.colA, t2.colB, t3.colC, t3.colD 
           FROM tableA t1 
           LEFT JOIN tableB t2 ON t1.id=t2.id 
           LEFT JOIN tableC t3 ON t2.pid=t3.pid
           WHERE t1.id BETWEEN 10 AND 100 
           ORDER BY t1.modifyDate DESC";
$command = $connection->createCommand($sql);
$dataReader = $command->query();
$result = $dataReader->readAll();


Internal:
$command=createCommand($query)
Note: $command is a CDbCommand
|- $dataReader = query()
   Note: $dataReader is a CDbDataReader
   |- CDBDataReader->readAll() returns array()

PHP Yii ActiveRecord FindAllBySql()

Definition:
public array findAllBySql(string $sql, array $params=array ( ))
(refer http://www.yiiframework.com/doc/api/1.1/CActiveRecord#findAllBySql-detail)


Explanation:
Find all active records using specified SQL statement


Example:
1. $model = MyModel::model()->findAllBySql('SELECT colA, colB FROM any_table');
2. $model = MyModel::model()->findAllBySql($sqlString);
3. $model = MyModel::model()->findAllBySql('SELECT * FROM any_table WHERE colA=:param', array(':param'=>$value));


Internal:

findAllBySql($sql, $param)
|-$command = createSqlCommand($sql,$params)
  Note: $command is a CDbCommand
  |-populateRecords($command->queryAll())

PHP Yii ActiveRecord FindAllByPk()

Definition:
public array findAllByPk(mixed $pk, mixed $condition='', array $params=array ( ))
(refer http://www.yiiframework.com/doc/api/1.1/CActiveRecord#findAllByPk-detail)


Explanation:
Find all active records with specified primary key


$pk can be either 
1. string -> single-key primary key
2. array  -> single-composite-key primary key
(refer createPkCriteria in yii\framework\db\schema\CDbCommandBuilder.php)


Example:
1. $model = MyModel::model()->findAllByPk($id);
2. $model = MyModel::model()->findAllByPk(array('pkCol1'=>$col1, 'pkCol2'=>$col2));


Internal:

findAllByPk($pk, $condition, $param)
|-$criteria = createPkCriteria($this->getTableSchema(),$pk,$condition,$params,$prefix)
  Note: $criteria is a CDbCriteria
  |-query($criteria, TRUE)
    Note: TRUE means select all active records