Where can I find documentation on built-in flash message for `users/save-user`?

Question

I'm trying to customize my user profile twig template UX to be a little more user friendly, but I can't figure out where to find what the built-in default errors/notices flash messages for the users/save-user form…

Any pointer in the right direction most appreciated!

Answer 1

These are flash messages which are typically triggered by controllers when saving or performing an action.

Craft::$app->getSession()->setFlash();
Craft::$app->getSession()->setError();

https://docs.craftcms.com/api/v3/craft-web-session.html#public-methods

Or in Craft CMS 3.5+ when used in a Controller action, you don't need to call the session service and can simply do.

$this->setSuccessFlash()
$this->setFailFlash()

In Twig this component is also available using:

{% do craft.app.session.setFlash() %}
{% do craft.app.session.setError() %}