Laravel 5 Message Bags: Checking if Messages Exist for a Specific Input Key With has

The has method can be used to determine if messages exist within the MessageBag instance for a given $key. The has method returns true if messages exist for the given $key, and returns false if no messages exist.

#Signature

The signature of the has method is:

1public function has(
2    $key
3);

The following examples demonstrate the usage of the has method:

 1use Illuminate\Support\MessageBag;
 2 
 3// Create a new MessageBag instance.
 4$messageBag = new MessageBag;
 5 
 6// false
 7$hasMessage = $messageBag->has('test');
 8 
 9// Add the message to the message bag.
10$messageBag->add('test', 'Example message');
11 
12// true
13$hasMessage = $messageBag->has('test');

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