kendo ui data grid - firebase -

i'm using kendo ui data grid firebase (rest json response). structure can contain multiple objects. however, these objects not in standard array format. see json file below:

{     "users": {         "contactdetails": {             "email": "johnlittle@email.com"         },         "firstname": "john",         "id": 1,         "surname": "little"     } } 

i able read firstname , surname onto grids column cannot email object.

this schema definition:

schema: {     model: {         fields: {                 id: {type: "number"},                 firstname: {type: "string"},                 surname: {type: "string"},                 email: {type: "string"}          }      } } 

as far know, u can not specify nested object schema model definition. 1 way can use column template email column.

columns: [     { field: "firstname", title: "firstname" },      { field: "surname", title: "surename" },     { title: "email", template: "#= data.contactdetails.email #" }, ],