Magento 2 use show Success and Error Message Using Interface Magento\Framework\Message\ManagerInterface.
You can set success message Using addSuccessMessage( ) and set error message using addErrorMessage( )function.
You can directly fetch Object of Magento\Framework\Message\ManagerInterface in controller file but for other files like Plugin, Observer, Model, Block or Helper; you need to instantiate an object in your __construct( ) method.
1 2 3 4 5 | public function __construct( \Magento\Framework\Message\ManagerInterface $messageManager ) { $this->messageManager = $messageManager; } |
Now you can set messages like below:
1 2 | $yourMessage = __('Your Error Message'); $this->messageManager->addErrorMessage($message); |
1 2 | $yourMessage = __('Your Warning Message'); $this->messageManager->addWarningMessage($message); |
1 2 | $yourMessage = __('Your Notice Message'); $this->messageManager->addNoticeMessage($message); |
