Remove message from MessageBag

Question

How can I remove an error message from a MessageBag?

I've been trying to remove a specific element from the message array that MessageBag uses without any luck.

I'm getting the same error message twice.

@if($errors->has('undefined'))
    <div class="alert alert-warning">
    <button type="button" class="close" data-dismiss="alert">&times;</button>
    <h4>Failure.</h4>
        {{ $errors->first('undefined') }}
    </div>
    <?
        // $messages = $errors->getMessages();
        $messages = $errors->toArray();
        unset($messages['undefined']);
    ?>
@endif

@if($errors->any())
    <div class="alert alert-error">
    <button type="button" class="close" data-dismiss="alert">&times;</button>
    <h4>Error!</h4>
        {{ $errors->first() }}
    </div>
@endif

Edit

I have done something like this and it seems to work.

<?
    $messages = $errors->toArray();
?>

        @if(array_key_exists('undefined', $messages))
            <?
                $message_array = $messages['undefined'];
                $message = $message_array[0];
                unset($messages['undefined']);
            ?>

            <div class="alert alert-warning">
            <button type="button" class="close" data-dismiss="alert">&times;</button>
            <h4>Failure.</h4>
                {{ $message }}
            </div>
        @endif

        <?
            foreach ($messages as $error => $error_array) { 
        ?>
            <div class="alert alert-error">
            <button type="button" class="close" data-dismiss="alert">&times;</button>
            <h4>Error!</h4>
                {{ $error_array[0] }}
            </div>
         <?
            }
         ?>

But my question still remains? Why is this happening in first place?
Does it has to do with the Session? I know that the errors variable it is stored in the Session.

Answer 1

http://laravel.com/api/class-Illuminate.Support.MessageBag.html

Unfortunately, Laravel does not offer methods for removing errors from the MessageBag instance. What you can do is make the 'undefined' error a variable so it's not even in the MessageBag to begin with and just use similar logic to show/hide that.

return View::make('test.view')
        ->with('undefined', 'Something is undefined')
        ->withInput($input)->withErrors($validator);

Passing by reference example. You could potentially modify the MessageBag class to have it pass by reference but it would be hacky.

<?php
class foo 
{
    public $value = 42;

    public function &getValue() 
    {
        return $this->value;
    }
}

$obj = new foo;
$myValue = &$obj->getValue(); // $myValue is a reference to $obj->value, which is 42.
$myValue = 2;

echo $obj->getValue(); // prints the new value of $obj->value, i.e. 2.
?>

Notice the & prepended to both the function name and the call.