Create doesn't get called with an id != 0

[Roberto]

I'm noticing some strange behavior on datasource CRUD operation when sync() gets called.
I've a transport with this configurations:

new kendo.data.DataSource({

                transport: {

                    read: {

                        url: "webservices/entities/read",

                        dataType: "jsonp",

                        jsonp: false,

                        jsonpCallback: "callback"

                    },

                    create: {

                        url: "webservices/entities/create",

                        type: "post",

                    },

                },

                schema: {

                    data: "items",

                    total: "total",

                    model: {

                        id: "id",

                        fields: {

                        id: {type: "number"},

                        name: {type: "string"},

                        description: {type: "string"},

                        parent_id: {type: "number"}

                    }

                },

                serverFiltering: true,

                sort: {field: "name", dir:"asc"},

                filter: {field: "parent_id", operator: "eq", value: parent_id}
});

however, when I add a new item with the datasource.add() method and call sync(), Create gets called only if I set the id: 0. With any other number Create doesn't get called. I've track the XHR object from the browser developer tools and I can also verify this by setting parameterMap: function(operation, options) { alert(operation); }

Any clue?  

[Roberto]

To be more specific, I Need to add a row based on a form compilation.

So I've created a grid and linked to the datasource like this:

grid = $('.grid');
grid.kendoGrid({
dataSource: gridDS,

     selectable: "cell",

     columns: [

         {field: "name", title:"Name"},

         {field: "description", title:"Description"}

     ]

    });

A button binded to click event fire a kendoWindow:

var form = $('#editWindow');

form.kendoWindow({

    modal: true,

    resizable: false,

    visible: false,

    title: "Entities",

    width: 400

});

 

var kWindow = form.data('kendoWindow');

         

$('#add-entity').bind('click', function(){

    kWindow.center();

    kWindow.open();

});

Then, a save button try to add the new data to the datasource:

$('#save').bind('click', function(){

    var entityName = $('input[name$="entity_name"]').val();

    var entityDescription = $('input[name$="entity_description"]').val();

     

        genId = Math.random().toString(10).substr(2,10);

         

    gridDS.add({ 

            id: genId,   // Here I'm trying to generate an uuid, but It could be any number. It Works only with '0' value.

        name: entityName,

        description: entityDescription,

        parent_id: entity_id     // this is set somewhere else...

    });

 

        gridDS.sync()  // Sync doesn't call the DataSource Create method unless id = 0 (?!)                            

    kWindow.close();           

});

[Iliana Dyankova]

Hi Roberto,

This is actually expected behavior. By design, the DataSource needs the ID to be with default value to consider it for a new item.


Greetings,
Iliana Nikolova
the Telerik team