What is Happening by Adding Interactivity?
Explore how adding Turbo Frames enhances interactivity in Rails applications by controlling server requests and responses. Understand how Turbo optimizes rendering by extracting matching partials and replacing content dynamically. Learn to troubleshoot common Turbo frame issues and implement form enhancements like cancel buttons and validation error displays for a seamless user experience.
We'll cover the following...
What’s happening in the Code?
By putting our HTML inside the <turbo-frame> tag, we allow Turbo to control both the request to and the response from the server.
When we click the “Edit” button, we make a standard Rails GET request, in this case for the ConcertController#edit action. Rails handles this request normally for the most part. If we look in the browser network tab, we can see that the return value is the entire edit page, including the <h2>Editing Concert</h2> header. Turbo inserts a Turbo-Frame header into the request, and Rails recognizes it and optimizes accordingly by not rendering the layout in the return value. This is because the system assumes that the layout is not the part that the receiving Turbo Frame is interested in.
When the response comes back to the browser, Turbo intercepts it and looks for the part of the response that contains a Turbo Frame tag with the matching ID. This is why the Turbo Frame in the form of partial and one in the ...