function promises thingie angularjs

promise-sample.js

    f.getCallHistory = function(){
      var request = $http({
        data: {
          method: 'doctors.get_member_history',
          id: f.id,
          params: {
            call_id : f.call_id
          },
          jsonrpc: '2.0'
        },
        method: 'POST',
        url: 'somURl'
      });
      return request.then(function(data)  {   
        // this is success
      }  ,    function(data) {
        /// this is error
      });
    };