field default value from anonymous function

[Cagatay]

Hello,

I've tried

.

.

.

            schema: {

                type: "json",

                model: {

                    id: "id",

                    fields: {

                        c_pmchart: {type: "string", validation: { required: true }},

                        defi: { type: "string", validation: { required: false }, defaultValue: function () {return 'test value';} },

.

.

.

to set a field's defaultValue via an anonymous function but it di not work. Any ideas how to set deafultValues by a function  ?

TIA

[Nikolay Rusev]

Hello Cagatay,

I am afraid that defaultValue should be value, not a function. It is not supported to have the default field value as a function.

Regards,
Nikolay Rusev
the Telerik team

[Robert]

A Telerik employee posted this solution elsewhere:

http://trykendoui.telerik.com/atOj/3

The gist is here, where the code sets one of the values equal to the currently-specified filter in that grid column:
​

defaultValue: function(e) {
  if(typeof this.CategoryID === "function") {
    var grid = $("#grid").data("kendoGrid");
    var ds = grid.dataSource;
    var filter = ds.filter();

    if(filter && filter.filters[0].field === "CategoryID") {
        this.set("CategoryID", filter.filters[0].value);
    } else {
        this.CategoryID = 1;
    }
  }
}

Hope this helps!

[Tim]

Are you defining the datasource in the scope of the grid options or linking it?

I ask because when I try this, e is undefined.  I'm working with a dataSource that's defined outside of the grid.

[Nikolay Rusev]

Hello Tim,

It doesn't matter how DataSource is defined the defaultValue function is called without arguments, thus e in this context will always be undefined. As you see in the code snippet it is not used anywhere in the function body.

Regards,
Nikolay Rusev
Telerik by Progress