hi,
I'm using the jQuery Validation plugin for a big project and I'm
loving it. I am however getting desperate trying to solve a particular
issue. I've hunted for a solution for days now and tried everything I
could think of, but it seems I coded myself into a deadlock. I'm
hoping you can have a quick look at my code, it's only a little bit :)
I'm developing a user registration form with quite some advanced
validation. So far it works just fine, apart from one thing: remotely
checking if the username does not exist already. Here's my code:
// extend the validation plugin to do remote username dupe checking
jQuery.validator.addMethod('usernameCheck', function(username) {
var postURL = "<?= $basepath; ?>user/json_username_check/" +
username + "/" + new Date().getTime();
$.ajax({
type: "POST",
url: postURL,
success: function(msg) {
result = (msg=='TRUE') ? true : false;
}
});
return result;
}, '');
The problem is that I cannot return the result of the Ajax call back
to the Validator. The Ajax call itself works fine, I can see that
using Firebug. I've been advised to not use this low level jQuery Ajax
call, but to use the "remote" option of the validator plugin instead.
However, the reason I'm not using the "remote" selector from the
Validation plugin is that my backend (Code Igniter) does not accept
params in the format ?name=value. It will block all those. Code
Igniter expects this: /name/value. It is possible to tell Code Igniter
to use query strings, but that will break my entire application.
Therefore, I am forced to use the $.ajax call.
In my research somewhere I found somebody saying that asynchronous
calls inside an addmethod do not work. I figured explicitly setting
the async = false in the Ajax request (not shown above) would help,
but it doesn't. The Ajax request itself works fine but I have no way
to return the result of it to the Validator plugin. With "remote" not
being an option and "AddMethod" not working, I have no idea what to do
next. I don't mean to sound lazy, but rewriting or hacking the plugin
itself beats my purpose of reusing and saving time.
I've been so productive in producing forms thanks to this plugin but
spending so much time on this little part got me quite depressed. I
hope you can give me some advise, I would be very grateful.
Thanks!
Ferdy
