For a simplier example of my problem, I've shortened the set-up of the grid.  I've attached the html example file for it.  The grid is making oData calls to a RESTful webservice as well, using load on demand.  Here is a sample output for the main call:

[
  {
    "refDataId": 147,
    "sysId": 22,
    "name": "variableName1",
    "rules": []
  },
  {
    "refDataId": 148,
    "sysId": 25,
    "name": "variableName2",

    "rules": []
  }
]

And when the request is made from the grid for the load on demand for the sub-grid, the url for the call is the same, with the addition of the query parameter of "?path=sysId:xxx (where xxx is the sysId of the row).  Output looks like this:

[
  {
    "ruleId": 721,
    "name": "721 : Rule"
  },
  {
    "ruleId": 841,
    "name": "841 : Rule"
  },
  {
    "ruleId": 963,
    "name": "963 : Rule"
  },
  {
    "ruleId": 296,
    "name": "296 : Rule"
  },
  {
    "ruleId": 602,
    "name": "602 : Rule"
  },
  {
    "ruleId": 407,
    "name": "407 : Rule"
  },
  {
    "ruleId": 89,
    "name": "89 : Rule"
  }
]

From what I have been able to ascertain (and how I was able to get the hierarchical grid to fire requests to my webservice), by setting oData: true and within the initial dataset, having the empty JSONArrays, linking this to the grid set-up (and the columnlayouts), I am able to see the request being sent to the server, as well as the second JSON response (the JSON with the "ruleID"/"name" objects.  Unfortunately, then the aforementioned error occurs:

Uncaught Error: The remote request to fetch data has failed: (parsererror) Cannot read property 'paging' of undefined

Being generated from: infragistics.ui.grid.framework.js:25

when it appears the grid is trying to handle the data.  Am I missing something in the grid/datasource configuration?

Just another thing to note, I have been using version 12.1.20121.2023 of NetAdvantage for jQuery, but when I reverted back to the trial version (12.1.20121.1010), the error disappears, and everything is functional...

Hello Patrick,

Thank you for the additional important details. I was able to see the error you described with version 12.1.20121.2023.  I have also noticed that this issue is resolved in latest public service release 12.1.20121.2059. As such, you can download this service release and use the JavaScript files in your sample or use CDN reference for version 12.1.20121.2059.

I hope this helps.

Hi:

I was able to successfully display igHierarchicalGrid with JSON data for Two Levels (like Year and Month) but not for three levels (like Year, Month and Day) .

I am using View Models to build the hierararchy and serialize the records using JSONConvert. I think my ViewModels/Hierarchical grid initialization is correct until Two Levels. I just extended the code to the third level and i am getting the error "Error: Syntax error, unrecognized expression: 2722" and it happens when i expand the plus icon at the last level.

Does anyone have a sample for Three Level igHierarchicalGrid with JSON data  ? I am using AJAX calls to Oracle Backend generate JSON data.

Thanks

Trin