[FIXED] Indirect modification of overloaded property to modify post data

Issue

My goal is change a $_POST['url'] to save it in database with in front"tcp://".$_POST['url'].

$model = $this->loadModel($id);

if (isset($_POST['xxx'])) {     
    $model->attributes = $_POST['xxx'];
    $model->attributes['url'] = 'tcp://'.$_POST['xxx'];  <-
    if ($model->save()) {

but it return "Indirect modification of overloaded property " . What the correct way to change that field?

Solution

In this case you have two choices:

1) Because you used $model->attributes = $_POST['xxx'];, you can access the values in $_POST['xxx'] as the model's attributes, so $model->url = 'something'; will work.

2) Generally you can move the values you want to modify into a new variable, modify them there and overwrite the original value with the new variable. It is especially useful if you want to modify a related model, which results in the same error message you received.

The wrong way:

$model->relationSomething = new RelationSomething;
$model->relationSomething->someAttribute = 'newValue';

The code above will result in the error message you received.

The correct way:

$model->relationSomething = new RelationSomething;
$tempVariable = $model->relationSomething;
$tempVariable->someAttribute = 'newValue';
$model->relationSomething = $tempVariable;
//Optimally you want to save the modification

Using this method lets you modify attributes in related models without causing errors.

Answered By - Adam Benedek