Unable to get property 'host' of undefined or null reference

[KrullParticipant]

I am trying to pass data from a list box to a treegrid and getting an error. Has anyone seen this before. Here is the code removed from the app

function createCourseReview()
{
var courses = $(‘#course-list’).jqxListBox(‘getItems’);

var source =
{
dataType: “array”,
dataFields:[
{name:”label”, type:”string”}
],
localdata: courses
};

var dataAdapter = new $.jqx.dataAdapter(source);

$(‘#confirmation-courses’).jqxTreeGrid(
{
theme: ‘LMSDash’,
source: dataAdapter,
columns: [ { text: ‘Courses’, dataField: ‘label’ } ]
});

$(‘#confirmation-courses’).jqxTreeGrid(‘refresh’);
}

The error is as follows : Unable to get property ‘host’ of undefined or null reference – jqxtreegrid.js (7,20880)

Please help I am stuck…lol

[KrullParticipant]

PS also if I go back a version of jqwidgets it works fine…but doing that breaks other parts because we are using some of the new features only provided in the current version or well 5.5.0 anyway.

[StanislavParticipant]

Hello Krullm

Have you taken a look at jqxDataAdapter?
It is the widget that transfers information from one source to another.

Best Regards,
Stanislav

jQWidgets Team
http://www.jqwidgets.com/

[KrullParticipant]

Yes sir I did in fact I used it here.

Are you seeing something I did wrong with it?

Anyway I ended up commenting out this line in jqxtreegrid.js

a.jqx.utilities.setTheme(c,k,f.base.host);

Now it works great. Please tell me if possible why this is causing a problem. I have a temporary solution but I don’t like modifying your code because it just feels wrong ….LOL. 🙂

[KrullParticipant]

P.S. I am not complaining. I am so pleased with the widgets! You guys rock! I don’t know why everyone is not using them … ha their loss… We use them exclusively and love them! Have a blessed day bro.

[Author]

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