A create action that can handle signup failure (but not success)
Using strong parameters in the create action
Code to display error messages on the signup form
A partial for displaying form submission error messages
A partial for displaying form submission error messages
CSS for styling error messages
The user create action with a save and a redirect
Adding the contents of the flash variable to the site layout
Agregando el mensaje flash para alertas
Agregando el mensaje flash para alertas en la plantilla