Selecting CGI::Application with jQuery AJAX

dannyhmg has asked for the wisdom of the Perl Monks concerning the following question:

I am trying to use AJAX to access a Perl app that uses CGI::Application. I am trying to select the Runmode by passing the rm parameter with the AJAX call. Here's the relevant part of my JS code:

 

$.ajax({
    type: "POST",
    url: "someurl.pl",
    rm: "my_runmode",
    dataType: "json",
    error: function (jqXHR1, textStatus1, errorThrown1) { 
        // Do something
        },
    success: function( response ) { 
        // Do something else
        }
    }
});
[download]

However, this doesn't select the correct Runmode; it always uses the StartRunmode, irrespective of the value of the rm parameter. I've also tried omitting the rm parameter and setting the url to someurl.pl?rm=my_runmode, but no dice. What am I doing wrong here?

Comment on Selecting CGI::Application with jQuery AJAX Select or Download Code

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Re: Selecting CGI::Application with jQuery AJAX by Corion (Patriarch) on Apr 14, 2015 at 14:36 UTC
Are you sure that `$.ajax()` accepts and passes on random parameters? Have you verified that what you want to send actually gets sent from jQuery? If not, this is more a jQuery problem than a Perl problem. I would assume that CGI::Application takes the parameters from the POST data and that jQuery.ajax sends the data from the `data` key and not from random parameters stuffed somewhere.	[reply] [d/l] [select]
Re: Selecting CGI::Application with jQuery AJAX by afoken (Chancellor) on Apr 14, 2015 at 18:13 UTC
... Read http://api.jquery.com/jQuery.ajax/: The `ajax` method expects the data in the `data` key of the `settings` object, not in the `settings` object. The data may be an object, an array or a string. Example, stolen from the same page: `$.ajax({ method: "POST", url: "some.php", data: { name: "John", location: "Boston" } // <-- look here! }).done(function( msg ) { alert( "Data Saved: " + msg ); })` [download] Alexander -- Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)	[reply] [d/l] [select]
Re: Selecting CGI::Application with jQuery AJAX by jeffa (Bishop) on Apr 14, 2015 at 16:54 UTC
There is no such jQuery setting called `rm`, is there? That is just a query parameter, so treat it is as such, as you tried in your second attempt. The reason why i believe `someurl.pl?rm=my_runmode` is not working for you is because your Ajax call uses POST, not GET. Failure tends to happen when you mix your HTTP methods. Try passing `rm` via POST. jeffa L-LL-L--L-LL-L--L-LL-L-- -R--R-RR-R--R-RR-R--R-RR B--B--B--B--B--B--B--B-- H---H---H---H---H---H--- (the triplet paradiddle with high-hat)	[reply] [d/l]
Re: Selecting CGI::Application with jQuery AJAX by graff (Chancellor) on Apr 14, 2015 at 18:01 UTC
Maybe my experience with (or my use of) CGI::Application is different from yours, but for me, a typical url for executing "run_mode_x" via CGI::Application starts like this: `"someurl.pl/run_mode_x$params"` [download] where $params is either an empty string or else something like: `"?param1=value1(&...)"` [download] depending on whether or not the request needs to pass any parameter(s) to the chosen run_mode.	[reply] [d/l] [select]
Re: Selecting CGI::Application with jQuery AJAX by Anonymous Monk on Apr 14, 2015 at 22:57 UTC
seeing how CGI::Application has a tons of plugins and tons of different way to be configured, you need to explain how it is configured to accept stuff ... complete example Mojolicious::Lite +and jQuery +AJAX + Mojo::Template another short jQuery example http://cgi-app.org/index.cgi?AjaxInfo another one but YUI :/ CGI::Application::Demo::Ajax - A search engine using CGI::Application, AJAX and JSON	[reply]