Thank you for posting to the Telerik Developer Forums.
I answered a similar question about how to retrieve the data of the user making the request in this forum thread
. In the request.data.Principal
property you have all information about the user making the request.
Note that the permissions for the content type are set to Role-based and the Administrator role is the only one able to update - you do not need to make this checks in the cloud code for the given content type.
You will notice that In the Role-based settings screen the Owner role is disabled for the create operation - since the item has no owner at the time of creation this role is irrelevant to the Create operation - that is why it is disabled.
Let me know if you have questions.