Question

I have set up this method for updating a model via AJAX, and have tried to extend it by also creating a new model if it doesn’t exist.

public function actionAjaxUpdate($id = null)
{
    if($id === null)
        $model = new MyObject;
    else
        $model = $this->loadModel($id);

    if(isset($_POST['MyObject']))
    {
        $model->attributes = $_POST['MyObject'];
        $model->save();
    }
}

Sample URLs sent when updating via AJAX, the digits at the end being the model ID:

/admin/myObject/ajaxUpdate/1
/admin/myObject/ajaxUpdate/2
/admin/myObject/ajaxUpdate/3
...

The problem here is that while updating works fine as an ID is provided, creating a new model doesn’t work. Because the ID does not exist yet for new items, the URL route will return a 404:

The requested URL /cmsadmin/myObject/ajaxUpdate was not found on this
server.

What would be a good approach to solving this problem?

I have tried overloading the same method without the $id parameter, but PHP does not support overloading, as discussed in this thread: Method overloading in a model of Yii framework

Please leave a comment if any additional information is required.

==== Additional Information ====

main.php

<?php
$backend = dirname(dirname(__FILE__));
$frontend = dirname($backend);
Yii::setPathOfAlias('admin', $backend);

return array(
    'basePath' => $frontend,
    'controllerPath' => $backend . '/controllers',
    'viewPath' => $backend . '/views',
    'runtimePath' => $backend . '/runtime',

    'components' => array(
        'urlManager' => array(
            'urlFormat' => 'path',
            'showScriptName' => false,
            'caseSensitive' => false,
            'appendParams' => true,
            'rules' => array(
                'admin/<controller:\w+>/<action:\w+>/<id:\d+>'=>'/<controller>/<action>',
                'admin/<controller:\w+>/<action:\w+>'=>'/<controller>/<action>',
...

Answer 1

I had the same problem but I passed in the id=0 for insert and id=1 for update. Make sure the id field is set to auto-increment so it is not required.

Now check if id is 1 then do insert else update the record.