AMISblog1-CRUDservice2

//...

this.create = function(meeting, successHandler, errorHandler) {
        this.meetingsCol.create(meeting, {
          contentType: 'application/json',
          headers: { Authorization: sessionStorage.getItem('token')},
          success: function(model, response) {
            successHandler(response);
          },
          error: errorHandler
        });
      };

      this.fetch = function(id, successHandler, errorHandler) {
        var meeting = meetingModel();
        meeting.id = id;

        meeting.fetch({
          success: function(model, response) {
            var meetingData = oj.KnockoutUtils.map(meeting);
            successHandler(meetingData);
          },
          error: errorHandler
        });
      };

      this.fetchAll = function(succesHandler, errorHandler) {
        this.meetingsCol.fetch({
          success: function(collection, response) {
            succesHandler(response.data);
          },
          error: errorHandler
        });
      };

      this.update = function(updatedMeeting, successHandler, errorHandler) {
        var jsUpdatedMeeting = ko.toJS(updatedMeeting);
        var meeting = meetingModel()
        meeting.save(jsUpdatedMeeting, {
          contentType: 'application/json',
          headers: { Authorization: sessionStorage.getItem('token')},
          success: successHandler,
          error: errorHandler
        });
      };

      this.delete = function(id, successHandler, errorHandler) {
        var meeting = meetingModel()
         meeting.id = id
         meeting.destroy({
           headers: { Authorization: sessionStorage.getItem('token')},
           success: function() {
             this.meetingsCol.remove(meeting);
             successHandler;
           },
           error: errorHandler
         });
      };
    }

    return new MeetingsService();
  });