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I am trying to get some data from a REST Service Url in a html file. This works fine when i am using the code direct in my browser. But when i embedded it into my SharePoint Site it wont work.

On my SharePoint Site i have disable MDS (Minimal Download Strategy).

<html>
<head>
    <script src="http://code.jquery.com/jquery-1.4.2.min.js"></script>
    <script type="text/javascript">

    var getdata = function() {
            $.ajax({
                url: "http://resturl:8080/api/v2/table/_table/v_name?api_key=2e02708088e54b560b33dbcb1e13b7e1488907534262b319d86b58c480fea54c",
                type: "GET",
                async: false,
                headers: {
                    "accept": "application/json;odata=verbose"
                },
            }).success(function (data) {
                    alert("got data");
            });
    }
    var chartdata = getdata();

    </script>
    </head>
<body>
    <h1>Some Text</h1>
</body>

For receiving this data i have to add the api_key to the url or the request.

The response code will be a json format, here a snippet:

{"resource":[{"id":22611},{"id":22649}],"meta":{"count":2661,"next":1000}}

Can anyone tell me why i am get no data when i using this html file out of sharepoint. The authorization should come with the api_key ?!

I also tried this code (because for json support in internet explorer etc.)

jQuery.support.cors = true;
jQuery.getJSON('http://resturl:8080/api/v2/table/_table/v_name?api_key=2e02708088e54b560b33dbcb1e13b7e1488907534262b319d86b58c480fea54c', 
    function(data) {
        alert("yeah");
    }
)
.error(function(jqXHR, textStatus, errorThrown) { alert(errorThrown); });

Thanks for any help.

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  • Check the Xhr response for your call in the Network tab of F12 Developer tools. If there is no call at all your problem is nopt with the ajax call
    – Danny '365CSI' Engelman
    Commented May 31, 2016 at 8:44

1 Answer 1

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4

Actually haven't had my coffee jet and read your question like you needed help with MDS - if you wan't to enable MDS again (which you should do because it's actually awesome), below are some hints that will help you.

Some troubleshooting help for your problem:

  • Check your browsers console for errors
  • Access the service via the URL directly (via browser for example)
  • Check if your code is present on the page (sometimes SP removes elements which are not compliant with its rules
  • Debug your code via the F12 Browser Dev Tools

Here are 2 things to keep in mind when working with MDS:

1. Protect your (and your libraries) NameSpace

MDS is cleaning the window object on every MDS-Navigation. This will cause your global values to get cleaned by their garbage collector.

You can Protect a namespace like this: 

// for libraries
// 1. Ensure the library has defined its global objects
// 2. Call this code
if (window.Function != 'undefined' && typeof (Function.registerNamespace) == 'function') {
        Function.registerNamespace('jQuery');
        Function.registerNamespace('$'); 
        Function.registerNamespace('etc'); 
    }

// for your code
// use an IIFE to create a scope and dont dirty the global scope
(function (_) {
    // _ is our object we use to put our code in
    // use strict to ensure we dont code stupid
    'use strict';

    // implement your code like this
    var yourFunctionPublic = function () {
        //code
        console.log('yourFunctionPublic');
        //you can call internal code here
        yourFunctionInternal();
    };

    var yourFunctionInternal = function () {
        //code
        console.log('yourFunctionInternal');
    };

    // every function / variable that should be callable from public you have to publish like below
    _.YourFunction = yourFunctionPublic;

    // attach our object at the namespace we want (this should be unique)
    // THIS WILL PROTECT YOUR GLOBAL VAR FROM THE GARBAGE COLLECTOR
    window.YourNameSpace = _;
    // protect our namespace by registering it
    // this must be done after defining the target object
    if (window.Function != 'undefined' && typeof (Function.registerNamespace) == 'function') {
        Function.registerNamespace('YourNameSpace');            
    }
})({});

// call your public functions / variables 

window.YourNameSpace.YourFunction();

2. Attach to the MDS-Lifecycle

Since you don't have a true reload, you won't have new events (load, etc). If you want your code to run after a navigation (even a MDS one), here's a little utility and how you can attach with it(the last lines show how):

//use an IIFE to create a scope and dont dirty the global scope
(function (_) {
    // use strict to ensure we dont code stupid
    'use strict';

    var initHandlers = [];
    var initMDSHandlers = [];

    var ensureSharePoint = function (handler) {
        var sodLoaded = typeof (_v_dictSod) !== 'undefined' && _v_dictSod['sp.js'] != null && _v_dictSod['sp.js'].state === Sods.loaded;

        if (sodLoaded) {
            handler();
        } else {
            SP.SOD.executeFunc('sp.js', 'SP.ClientContext', function () { });
            SP.SOD.executeOrDelayUntilScriptLoaded(handler, 'sp.js');
        }
    };

    var initMDS = function () {
        for (var i = 0; i < initMDSHandlers.length; i++) {
            initMDSHandlers[i]();
        }
    };

    var init = function () {
        // Register MDS handler
        if ('undefined' != typeof g_MinimalDownload && g_MinimalDownload && (window.location.pathname.toLowerCase()).endsWith('/_layouts/15/start.aspx') && 'undefined' != typeof asyncDeltaManager) {
            asyncDeltaManager.add_endRequest(initMDS);
        } else {
            for (var i = 0; i < initHandlers.length; i++) {
                initHandlers[i]();
            }
        }
    };

    var registerInit = function (handler) {
        initHandlers.push(handler);
    };

    var registerInitMDS = function (handler) {
        initMDSHandlers.push(handler);
    };

    var domReady = (function (handler) {
        var fns = [];
        var listener;
        var loaded = (document.documentElement.doScroll ? /^loaded|^c/ : /^loaded|^i|^c/).test(document.readyState);

        if (!loaded) {
            document.addEventListener('DOMContentLoaded', listener = function () {
                document.removeEventListener('DOMContentLoaded', listener);
                loaded = 1;
                while (listener = fns.shift()) listener();
            });
        }

        return function (fn) {
            loaded ? setTimeout(fn, 0) : fns.push(fn);
        };
    })();


    var attachToLoad = function (functionToAttach) {
        registerInit(functionToAttach);
        registerInitMDS(functionToAttach);
       domReady(function () {
           init();
        });
    };

    _.AttachToLoad = attachToLoad;

    // THIS WILL PROTECT YOUR GLOBAL VAR FROM THE GARBAGE COLLECTOR
    window.LifeCycleHelper = _;
    if (window.Function != 'undefined' && typeof (Function.registerNamespace) == 'function') {
        Function.registerNamespace('LifeCycleHelper');
    }
})({});

var theCodeYouWantToRun = function () {
    alert('theCodeYouWantToRun');
};

window.LifeCycleHelper.AttachToLoad(theCodeYouWantToRun);
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