How to show success message in session Magento2

magento.stackexchange https://magento.stackexchange.com/questions/127476

문제

In magento 1 i can do it like this 

$session            = Mage::getSingleton('core/session');
$session->addSuccess($this->__('Your Request has been received. One of our sales representatives will contact you shortly.'));

Same thing how can i do it in Magento2? Tried this but not working .

도움이 되었습니까?

해결책

In Magento 2, we can do achieve this in two steps:

First, we need to assign the message to 'messageManager' from your module as below:

$this->messageManager->addSuccess(__('This is a success message.'));

Secondly, we need to assign a placeholder for the message through frontend layout xml used in the module as given below inside the <body> tag:

<referenceContainer name="page.messages">
        <block class="Magento\Framework\View\Element\Template" name="ajax.message.placeholder" template="Magento_Theme::html/messages.phtml"/>
        <block class="Magento\Framework\View\Element\Messages" name="messages" as="messages" template="Magento_Theme::messages.phtml"/>
</referenceContainer>

The above layout update will make use of the magento's message template to display the messages.

다른 팁

Magento2 is using MessageInterface to add all message, please use below code to show Messages

Magento Message Framework class

\Magento\Framework\Message\ManagerInterface

use below code in your file to add messages,

protected _messageManager;

public function __construct(\Magento\Framework\View\Element\Template\Context $context, \Magento\Framework\Message\ManagerInterface $messageManager) {
        parent::__construct($context);
        $this->_messageManager = $messageManager;
    }

and then add below functions in your methods to show messages:

$this->_messageManager->addError(__("Error Message"));
$this->_messageManager->addWarning(__("Warning"));
$this->_messageManager->addNotice(__("Notice"));
$this->_messageManager->addSuccess(__("Success Message"));

I hope this will help you fixing your issue.

You can try below code to add success or error Messages.

$this->messageManager was in parent class calling from

\Magento\Framework\App\Action\Action

$this->messageManager = $context->getMessageManager();

class Post extends \Magento\Framework\App\Action\Action
{

    public function __construct(
        \Magento\Framework\App\Action\Context $context
    ) {
        parent::__construct($context);
    }
    public function execute()
    {

$data = $this->getRequest()->getPostValue();

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();       
$question = $objectManager->create('Myvendor\Mymodule\Model\Feedback');

/****** set your data *********/
$question->setData($data);
$question->save();

$this->messageManager->addSuccess( __('Thanks for your valuable feedback.') );

/* ***** OR

$this->messageManager->addError('There is something went wrong');
$this->_redirect('*/');
return;
    }

You can assign messages to messageManager

$this->_messageManager->addError(__("Error"));
$this->_messageManager->addWarning(__("Warning"));
$this->_messageManager->addNotice(__("Notice"));
$this->_messageManager->addSuccess(__("Success"));

You can find some more information on how to Display notification messages

Hope this helps.

Custom layout file 

<referenceContainer name="page.messages">
        <block class="Magento\Framework\View\Element\Messages" name="messages" as="messages"/>
 </referenceContainer>

Use this in your custom layout file to show the Error message and Success message for your custom template file.

Custom Controller file

 try{
        $school_model->save();
        $this->messageManager->addSuccess(
                    __('Thanks for Submission'));
    }catch (\Exception $e) {
        $this->messageManager->addError(
                    __('We can\'t process your request right now. Sorry, that\'s all we know.'));   
    }
    $this->_redirect('*/*/');
    return;
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