Number format incorrect in PUT and POST operation

[Olivier]

Hello

In PUT and POST operation all number properties of my entity are sent in string format. In my GET operation, I receive my entity with correct value, but when I send my entity, my datasource convert number properties in string.

My datasource definition :

var _FrmTest_dtTtOrigineGeographique = new kendo.data.DataSource({
            type: "odata-v4",
            content: "json",
            transport: {
                read: {
                    url: "https://localhost:9443/odata/EntiteTtOrigineGeographiques",
                },
                update: {
                    url: function (data) { return "https://localhost:9443/odata/EntiteTtOrigineGeographiques(" + data.IdTtOrigineGeographique + ")" },
                }

            },
            schema: {
                model: {
                    id: "IdTtOrigineGeographique",
                    fields: {
                        IdTtOrigineGeographique: {
                            type: "number",
                            editable: false,
                        },
                        StrLibelle: {
                            type: "string"
                        },
                    }
                }
            },
            error: function (e) {
                console.log(e.xhr);
            },
            filter: {
                logic: "and",
                filters: [
                    { field: "IdTtOrigineGeographique", operator: "eq", value: _idTtOrigineGeographiqueSelect }]
            },
            serverFiltering: true,
            serverSorting: true
        });

With GET operation, I receive my entity like this

{"@odata.context":"https://localhost:9443/odata/$metadata#EntiteTtOrigineGeographiques","@odata.count":1,"value":[{"IdTtOrigineGeographique":5,"StrLibelle":"Autres départements", "Pourcentage": 4.55}]}

But when I update my entity and I call sync method, my datasource send my entity like this :

{"IdTtOrigineGeographique":"5","StrLibelle":"Autres département","Pourcentage":"4.55"}

I verify JSON.stringify() and kendo.stringify() functions and my entity is correctly serialize

For integer property it's not blocking because my webservice convert automatically string to integer. But with float (ex : 4.55), I have a exception and my entity it's not deserialize.

Can you help me ? Thanks in advance

Arnaud

[Veselin Tsvetanov]

Hello Arnaud,

As you have correctly noticed, on Update or Create, the current implementation of the odata v4 transport type of the DataSource will internally stringify the numeric values in the item. In order to alter this behaviour of the utility you could implement a parameterMap function for the transport:

var _FrmTest_dtTtOrigineGeographique = new kendo.data.DataSource({
    type: "odata-v4",
    content: "json",
    transport: {
        read: {
            url: "https://localhost:9443/odata/EntiteTtOrigineGeographiques",
        },
        update: {
            url: function (data) { return "https://localhost:9443/odata/EntiteTtOrigineGeographiques(" + data.IdTtOrigineGeographique + ")" },
        }

    },
    parameterMap: function(options, operation) {
        if (operation !== "read" && options) {
            return kendo.stringify(options);
        }
    }
...

I hope that this helps.

Regards,
Veselin Tsvetanov
Progress Telerik

[Olivier]

Hello Veselin

Thanks, that's work. I just add a line (for read filters). But why it's not normal behavior ?

parameterMap: function (options, operation) {
   if (operation !== "read" && options) {
      return kendo.stringify(options);
   }
   return kendo.data.transports["odata-v4"].parameterMap(options, operation);
}

[Veselin Tsvetanov]

Hello Arnaud,

The reason behind the stringifiied numbers are some issues present in the decimal numbers parsing in OData. Therefore, we decided to make the OData service request IEEE754Compatible and represent the numbers as strings.

Regards,
Veselin Tsvetanov
Progress Telerik