Dojo JSON call back always returns an error

Question

Hi Guys,

I am using Dojo and making a AJAX call to a JAVA Class and trying to get the output of the program to a Alert box to the client.

            var showResult = function(result){
            console.log("Showing Result()");
            var store = new dojo.data.ItemFileReadStore({ data: result});
            console.dir(store);

            store.fetch( { onItem: function(data) {  alert("Hie"); },
                            onError: function(error,request){ alert("ERROR");}
            });

        };  

This is my code, showResult basically is call back function from xhr request. I can see console.dir(store) printed onto Firebug but the fetch function always returns the onError block.

My store array is of the form {info="Test Message"} and I need to retrieve "Test Message" and display it in a Alert box. Any help?

Answer 1

If the result is just an array, you should use new dojo.data.ItemFileReadStore({data : {items : result}}) to create the store.

For example, result is [{info : "Test Message 1"}, {info : "Test Message 2"}], then the code should be:

var store = new dojo.data.ItemFileReadStore({data : {items : result}});
store.fetch({
    onItem : function(item) {
        alert(store.getValue(item, "info"));
    },
    onError : function(error) {
        alert("Error!");
    }
});

Answer 2

try store.fetch( { query: {info: '*'}}, onItem: function(data) { alert("Hie"); }, onError: function(error,request){ alert("ERROR");} });

as well you may want to see if onComplete : function(items){console.log(items);} works instead of onItem, it is worth a try.

As well console.log your error so that you can see what the issue is.

A few other things does you store have an identifier and label set?