Webform Message / Custom Module

Question

I'm trying to create a custom module which will display a message after my webform. I know that in order to display a message, I could use the following code:

$message = "Message here";
drupal_set_message(t($message));

But rather than having a specific message, I want to have a conditional message based on PHP if statements. E.g.,

    if($class == A) {
    print "Correct!";
}

So, my question is how can I get the results of this PHP code to display on my webform? I'm not familiar with PHP code, so I don't know if I can combine the $message code with the if statement somehow. (I've tried variations of this with no success.)

Thanks for your help.

Answer 1

One of the features and APIs of the Webform module for Drupal 8 that I personally enjoy using is support for inline messages using the WebformMessage element

The WebformMessage element supports dismissal messages and #states API.

Here is the YAML version of a Message element

message:
  '#type': webform_message 
  '#message_type': warning 
  '#message_close': true,
  '#message_storage': user,
  '#message_message': 'This message can be dismissed by a user'

Here is the PHP syntax, which can be used in your custom code.

$build['message'] = [
  '#type' => 'webform_message',
  '#message_id' => 'custom_message_id',
  '#message_type' => 'warning',
  '#message_close' => TRUE,
  '#message_storage' => WebformMessage::STORAGE_USER,
  '#message_message' => $this->t('This message can be dismissed by a user'),
];