"Cannot create graph without links and nodes" #17

Robrechtc · 2015-03-10T15:22:20Z

Hey again! I've been playing with ngraph a bit and I'm currently trying out the fromJSON package. This is the JSON data I'm retrieving:

{
    "nodes": [
        {
            "id": "BBA1"
       },
        {
            "id": "Bank and stock"
        },
        {
            "id": "Economic history"
        },
        {
            "id": "Principles of law"
        },
        {
            "id": "Statistics I"
        },
        {
            "id": "Managerial economics B"
        },
        { 
            "id": "Mathematics I-B"
        },
        {
            "id": "Accounting B"
        }
   ],
    "links": [
        {
            "toId": "Bank and stock",
           "fromId": "BBA1"
        },
        {
            "toId": "Economic history",
            "fromId": "BBA1"
        },
        {
            "toId": "Principles of law",
            "fromId": "BBA1"
        },
        {
            "toId": "Statistics I",
            "fromId": "BBA1"
        },
        {
            "toId": "Managerial economics B",
            "fromId": "BBA1"
        },
       {
            "toId": "Mathematics I-B",
            "fromId": "BBA1"
        },
        {
            "toId": "Accounting B",
            "fromId": "BBA1"
        }
    ]
}

My test.html file is this:

<script src="/static/node_modules/ngraph.fabric/node_modules/fabric/dist/fabric.js"></script>
<script src="/static/bundle.js" type="application/x-javascript"></script>
<title>Ngraph testing</title>
<style>
    body { height: 100%; width: 100%; position: absolute; overflow: hidden; margin: 0; padding: 0;}
</style>

</head>
<body onload="ngraph.main()">

</body>
</html>

And this is my index.js:

module.exports.main = function () {
    var jsonString = $.ajax({
            'url': '/coursedata',
            'datatype': 'json',
            'type': 'GET',
            'data': {
                'path': '-BBA1-Semester 2',
            }
        })

    var fromJSON = require('ngraph.fromjson')
    var graph = fromJSON(jsonString)
    var createFabric = require('ngraph.fabric')
    var fabricGraphics = createFabric(graph);

    fabricGraphics.run();

}

As I am passing my nodes and links, I have no clue what's causing this error :p many thanks in advance for reading and replying!

The text was updated successfully, but these errors were encountered:

anvaka · 2015-03-11T02:46:47Z

This doesn't look correct:

   var jsonString = $.ajax({
            'url': '/coursedata',
            'datatype': 'json',
            'type': 'GET',
            'data': {
                'path': '-BBA1-Semester 2',
            }
        });

I think you are using jquery to perform ajax request. If so, refer to the documentation to see how to handle ajax response. Should probably be something like

$.ajax({
     'url': '/coursedata',
     'datatype': 'json',
     'type': 'GET',
     'data': {
         'path': '-BBA1-Semester 2',
     }
}).done(function(jsonString) {
 // ...
});

anvaka closed this as completed Mar 11, 2015

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"Cannot create graph without links and nodes" #17

"Cannot create graph without links and nodes" #17

Robrechtc commented Mar 10, 2015

anvaka commented Mar 11, 2015

"Cannot create graph without links and nodes" #17

"Cannot create graph without links and nodes" #17

Comments

Robrechtc commented Mar 10, 2015

anvaka commented Mar 11, 2015