Django template variable not being rendered into JavaScript

Question

I have the following Javascript between tags in a template:

YAHOO.util.Event.addListener(window, "load", function() {
YAHOO.example.Taco = function() {
    var myColumnDefs = [
        {% for field in included_fields %}
           {key:"{{ field }}", sortable:true, resizeable:true},
        {% endfor %}
    ];

    var myDataSource = new YAHOO.util.XHRDataSource("http://192.168.1.15:5555/yuidt/list");
    myDataSource.responseType = YAHOO.util.DataSource.TYPE_JSON;
    myDataSource.responseSchema = {
        resultsList: "people",
        fields : [ {{field_list}} ]
    };

    var myDataTable = new YAHOO.widget.DataTable("basic",
            myColumnDefs, myDataSource, {caption:"DataTable Caption"});

    return {
        oDS: myDataSource,
        oDT: myDataTable
    };
}();

});

The value of field_list is the string "first","last","phone"

fields is getting set to nothing some how. So {{field_list}} seems to not be getting rendered.

In the body on the page I have <p>{{field_list}}</p> which displays "first","last","phone" as expected.

This makes me think it is some sort of escaping issue, I tried |addslashes but that was no help.

Any suggestions will be greatly appreciated.

Thanks.

This could be useful to debug this: docs.djangoproject.com/en/dev/ref/templates/api/…. Furthermore are you sure there's no block tag around the code you show us that may cause this problem? — Bernhard Vallant
– Bernhard Vallant, Commented Jun 24, 2010 at 1:59
For what it's worth, use the safe filter to turn off any autoescaping of a string. I really doubt that will fix your problem though. — Eric Palakovich Carr
– Eric Palakovich Carr, Commented Jun 24, 2010 at 2:03
What does the rendered JS look like if you view source? Any chance something is wrong with the Javascript itself? — Sam Dolan
– Sam Dolan, Commented Jun 24, 2010 at 2:33
Eric: The safe filter was the solution, thanks. If you post it as the answer I'll happily give you the credit. — AGreyCrane
– AGreyCrane, Commented Jun 24, 2010 at 2:38
sdolan: Thanks, to you as well. That was what lead to the above solution, I'm not quite sure how I failed to do that before I posted here. Long day I guess. — AGreyCrane
– AGreyCrane, Commented Jun 24, 2010 at 2:40

shahjapan · Accepted Answer · 2010-06-24 03:08:55Z

1

As Eric said it can be resolved using safe filter !

answered Jun 24, 2010 at 3:08

shahjapan

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