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in this video were going to continue working with django crispy forms and htmx and were going to extend the form that we built in the previous video to include some validation checks for the username and for the subject field within the form and in addition to that were going to demonstrate how to use the hx swap out of band attribute which has not been shown before on this channel so thats coming up later in the video and were going to start by checking whether or not the username field is valid using htmx now currently if we enter a username that is two characters long and we try and register this user were going to see that we get back the form with the username is too short that validation error there now what we want to do is we want to actually display that before we submit the form so while the user is typing we want to show these types of messages and were going to wire up the username field on our form class with some htm x attributes in order to do this so lets go to