I have been reviewing the site and I have not been able to find an answer to my question. I'm trying from a select with a list of products that I have in a view that when I select one I get updated the existence data of that product that I get from a controller function. I know how to get them with php, what I need is to achieve it on the same page, without recharging it, but I'm not very skilled in javascript and I'm a bit lost. Greetings and thanks in advance.