Globally Override Default Properties

[AGB]

Hi Guys,

When using the Grid widget I can globally override a property, for example columnMenu as follows

    kendo.ui.Grid.fn.options.columnMenu = {
        columns: true
    };

but I am unable to find any examples in how to override the default dataSource properties.

What I'm trying to achieve is to always default the schema section with the following values

    schema: {
          data: "data",
          errors: "error",
          total: "total",
     },
 
to save having to duplicate them on every dataSource instance.

Is this at all possible ?

Regards
Alan

[Konstantin Dikov]

Hi,

You could set the schema globally as shown below:

kendo.data.DataSource.fn.options.schema = {
                        data: "data",
                        errors: "error",
                        total: "total",
                  };

However, if you set the schema within the initialization of a widget, the default values will be overridden with the new schema object.


Regards,
Konstantin Dikov
Progress Telerik

[AGB]

Hi Konstantin,

Thanks for coming back to me ...

But I afraid to say setting the 'kendo.data.DataSource.fn.options.schema' values prior to initialising the grid control, which has an inline dataSource, causes a number of JavaScript errors

    angular.js:12450 TypeError: Cannot read property 'slice' of undefined
    kendo.all.js:51338 Uncaught TypeError: Cannot read property 'height' of undefined
    kendo.all.js:52563 Uncaught TypeError: s is not a function
    
before any data is even requested from the server.

So it would seem you cannot globally set the dataSource properties like you can the grid properties unless you have another solution up your sleeve.

Regards
Alan

[Konstantin Dikov]

Hi Alan,

Since the dataSource accepts object, you could define custom function and pass the configuration for the particular dataSource as parameter and return the object with the default values for the schema that you need.

You could also refer to the source code of the DataSource to see if you can find another approach for setting the default values:

• https://github.com/telerik/kendo-ui-core/blob/master/src/kendo.data.js

Best Regards,
Konstantin Dikov
Progress Telerik

[AGB]

Hi Konstantin,

> define custom function and pass the configuration for the particular dataSource as parameter
 
This sort of defeats the object of setting a global default once which every dataSource inherits.
 
> You could also refer to the source code of the DataSource

Yep I have trawled through the source but nothing lends itself to being overridden.

Therefore it looks like I'm resigned to always adding

        schema: {data: "data", errors: "error", total: "total",}
    
and a couple of other defaults on every dataSource which is created.

Regards
Alan

[gjb]

Did there came a more solid solution for this question? Experience the same issue with adding schema: {data: "data"... etc

[Ivan Danchev]

Hello,

The default behavior can be customized through source code modifications. We don't have an alternative approach to suggest.

Regards,
Ivan Danchev
Progress Telerik