UJS guides somewhere?

rubyonrails-talk
1

I'm trying to work with AJAX on Rails 3 but I cant find any documentation or a guide for learning it, is there a good one out there to start practicing?

2

forget ujs ,only use jquery that is very easy and also work fine.

3

I’m trying to work with AJAX on Rails 3 but I cant find any

documentation or a guide for learning it, is there a good one out there

to start practicing?

just add a .js.haml (or erb) template and add the js response to that file. for example,

you’re sending an ajax request to the create action of posts controller. just

add a create.js.haml file and add the script you want in that file.

4

There has been a couple of attempts at writing an Ajax guide, but none finished (and none ongoing as of this writing that I am aware of).

An Ajax guide would be very helpful if anyone wants to volunteer one :).

5

bill gate wrote in post #1000518:

forget ujs ,only use jquery that is very easy and also work fine.

@Tomas, ignore this reply Unobtrusive JavaScript (UJS) and jQuery are completely unrelated. One has nothing to do with the other. jQuery can be just as obtrusive, or unobtrusive, as any JavaScript.

I do agree, however, it would be nice to have an "official" guide to JavaScript (& CoffeeScript).

6

I also don't know of any good guides for this. You can see the relevant RailsCast for it: #205 Unobtrusive Javascript - RailsCasts where Ryan Bates discusses using the *.js.erb style of returning JS to the page to be executed.

I'd recommend reading through the rails adapter you're using. It will help to give you some idea of how it works. If using JQuery, you can hook into a series of triggered events throughout the AJAX call lifecycle. Here's an example to handle the response from a AJAX-y link:

$('a[data-remote]').live('ajax:complete', function(xhr, response) {       if (response.status == 200) {         $('#resource-display').html(response.responseText);       } else {         $('#resource-display').html('Error loading content');       }     });

Fundamentally, though, there *does* need to be better documentation about this. It's certainly one of those 'someone needs to do it' moments, and we can't really blame anyone else but ourselves!

Casey

7

so before trying ajax i need to learn javascript right?

8

Yes, absolutely. AJAX stands for "Asynchronous Javascript". So learning some Javascript is key.