How do I use a form to update a model?

So what I'm trying to do is display a model on a page and then use a form to update said model on the page. I've managed to create a form and display it on the page, and I have managed to create to create a model--though I haven't gotten to display it on the page. This is what I have so far

How do I use a form to update a model?

So what I'm trying to do is display a model on a page and then use a form to update said model on the page. I've managed to create a form and display it on the page, and I have managed to create to create a model--though I haven't gotten to display it on the page. This is what I have so far