in my AngularJS app I've bound the Kendo Grid to a SharePoint 2010 REST Webservice and defined it as follows:
this is a part of the data from the REST Service:
all of the data is displayed correctly.
the problem is the filter menu.
On the "Erstellt" field it displays the options for a date-type (eq, lt, gt) which i've defined.
On the "Geändert" field it displays the options i defined for string-types, although i've declared it as a date field.