Ajax test not working

[Jason Walsh]

Am having real probs trying to use Ajax with my Rails app. I have set up
a test as

follows:

in javascript file:

window.onload = function() {
$('#test').bind('ajax:success', function() {
alert("success");
};
}
in view:

<%= link_to "test", { :action => :getDiagram }, :remote => true, :id =>
"test" %>
in controller:

def getDiagram

end

Now I know this looks odd with the empty controller action, but I would
expect this code to just show a popup window with 'success' and leave
the current page loaded when the link is clicked? Instead i get the
missing template message like its trying to load a page synchronously
rather than using ajax?

Can anyone get my test to work? Do I need to upgrade or add a gem file?

Thanks in advance

Jason

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[Frederick Cheung]

On Wednesday, October 24, 2012 7:40:24 PM UTC+1, Ruby-Forum.com User wrote:

Am having real probs trying to use Ajax with my Rails app. I have set up
a test as

follows:

in javascript file:

window.onload = function() {
    $('#test').bind('ajax:success', function() {
        alert("success");
    };
}

This javascript is syntactically incorrect - you're not closing the parens you open just after "bind"

Also if you want to render nothing you do need to explicitly say that (eg render :nothing => true) or rails will complain that there is no template

Fred

[webber han]

Jason Walsh wrote in post #1080993:

What I have noticed is that
1. The javascript syntax is not correct
2. You didn't specify a controller from the link
3. It is probably make more sense to test with Json response using
respond_to :json
respond_with { :status => 'okay' }

[Jason Walsh]

AndreM wrote in post #1081168:
> Maybe try in controller:
>
> def getDiagram
>
> respond_to do |format|
> format.js
> end
>
> end

Hi Andre

Tried that - dont get error but renders a blank template. My main
concern is why the event isnt firing and showing the alert.

[Jason Walsh]

Frederick Cheung wrote in post #1081170:

Thanks Fred

I spotted that using Firebug, but still makes no difference. When
setting render :nothing => true it just renders a blank template which
is not what i want. The ajax:success event is not firing either

[Jason Walsh]

webber han wrote in post #1081214:

Thanks Webber

1. Noticed the missing bracket and fixed.
2. Have set a route as follows:
match '/getdiagram', :to => 'prosesses#getDiagram'
It seems to be executing the right controller/action from the error
message i get
3. Tried that but get:
c:/Users/Jason/rails_projects/procstor/app/controllers/prosesses_controller.rb:123:
syntax error, unexpected tASSOC, expecting '}'
respond_with { :status => 'okay' }
^

[Rob Biedenharn]

The parser sees this line as a method with a block and then the => is confusing (not allowed there, it isn't in a Hash)

Either of these changes will do what you expect:

respond_with({ :status => 'okay' }) # no longer looks like a block
respond_with :status => 'okay' # must be a hash literal
respond_with( :status => 'okay' ) # must be a hash literal

Although the value for :status might need to be 'OK' or 200 rather than 'okay' and you need a respond_to in the controller.
http://apidock.com/rails/ActionController/MimeResponds/respond_with

-Rob