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.
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public function __construct( \Magento\Framework\Message\ManagerInterface $messageManager ) { $this->messageManager = $messageManager; } |
Now you can set messages like below:
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$yourMessage = __('Your Error Message'); $this->messageManager->addErrorMessage($message); |
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$yourMessage = __('Your Warning Message'); $this->messageManager->addWarningMessage($message); |
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$yourMessage = __('Your Notice Message'); $this->messageManager->addNoticeMessage($message); |