salesforce - Adding a mass update feature to UI-Grid (AngularJS) -

we calling ui-grid in angularjs salesforce visualforce page. used create editor external users can see list of students , update student information.

my goal add function allow user update multiple rows @ once fields/values (defined in menus). appreciate advice whether i'm on right track here or more efficient/functional methodology.

the normal row save working, implemented in controller

  $scope.saverow = function(studentterm) {      var promise = $q.defer();      $scope.gridapi.rowedit.setsavepromise(studentterm, promise.promise);        var updatablefieldsonstudentterm = {        studenttermid: studentterm.studenttermid,        appliedforasset: studentterm.appliedforasset,        studentidatcollege: studentterm.studentidatcollege,        comments: studentterm.comments,        dsfscholarshipstatus: studentterm.dsfscholarshipstatus,        eligibilityallrequirementsforaward: studentterm.eligibilityallrequirementsforaward,        //eligibilityhsgpamet: studentterm.eligibilityhsgpamet,        enrollmentstatus: studentterm.enrollmentstatus,        enrollmenttype: studentterm.enrollmenttype,        fafilecompletiondeadline: studentterm.fafilecompletiondeadline,        finalefcuponfafilecompletion: studentterm.finalefcuponfafilecompletion,        financialaidcompletedbydeadline: studentterm.financialaidcompletedbydeadline,        financialaidstatus: studentterm.financialaidstatus,        hasstudentcompleted4yeardegree: studentterm.hasstudentcompleted4yeardegree,        //partnerscholarshiprecipient: studentterm.partnerscholarshiprecipient,        preliminaryefcrange: studentterm.preliminaryefcrange,        programenrolled: studentterm.programenrolled,        cumulativecollegegpa: studentterm.cumulativecollegegpa,        devedreqcompletedwithin1styear: studentterm.devedreqcompletedwithin1styear,        sapstatus: studentterm.sapstatus,        ssrrequirementscomplete: studentterm.ssrrequirementscomplete,        applicationid: studentterm.applicationid,        scholarshippaymentamount: studentterm.scholarshippaymentamount,        studentid: studentterm.studentid,        //danielsscholar: studentterm.danielsscholar      }        termsservice.updatestudenttermbyid(updatablefieldsonstudentterm).then(function(st) {        var rowindex = $scope.studentterms.indexof(studentterm);        if(rowindex != -1) {          st.options = $scope.fieldoptions;          $scope.studentterms[rowindex].scholarshippaymentamount = st.scholarshippaymentamount;          $scope.gridoptions.data = $scope.studentterms;          if($scope.searchtext) {            $scope.refreshdata();          }          notification.success('changes saved ' + studentterm.studentname);        }        promise.resolve();      }).catch(function(err) {        console.log(err);        notification.error('save failed ' + studentterm.studentname);        promise.reject();      });    };

and app script

var app = angular.module('scholarshipapp', [    'app.controllers',    'app.templates',    'ngsanitize',    'ui.grid',    'ui.grid.edit',    'ui.grid.cellnav',    'ui.grid.pagination',    'ui.grid.exporter',    'ui.grid.selection',    'ui.grid.rowedit',    'ui.grid.pinning',    'ui.bootstrap',    'cgbusy',    'ui-notification'    ]);    app.config(function(notificationprovider) {    notificationprovider.setoptions({      delay: 2000,      starttop: 20,      startright: 10,      verticalspacing: 20,      horizontalspacing: 20,      positionx: 'top',      positiony: 'right'    });  });    app.factory('termsservice', function($rootscope, $q, $window) {    var _updatestudentterm = function(studentterm) {      var deferred = $q.defer();      var action = $window.scholarship_app.vfremoting.termsservice.updatestudentterm;      visualforce.remoting.manager.invokeaction(action, studentterm, function(result, event) {        $rootscope.$apply(function() {          if (event.status) {            deferred.resolve(result);          } else {            deferred.reject(event);          }        });      }, {buffer: true, escape: false, timeout: 30000});      return deferred.promise;    };    return {  getstudentterms: _getstudentterms,  updatestudenttermbyid: _updatestudentterm,  getselectoptions: _getselectoptions,  notifyupdatesdone: _notifyupdatesdone,  isegtc: _isegtc,  massupdate: _massupdate    };  });

ui-grid allows row row updates trying call massupdate function in turn calls apex method in salesforce through remote feature. here code i've added (inside same factory , app won't include in snippets).

controller

  $scope.massupdate = function() {          var idlist = [];      var rows;      confirm('update ' + editrows + ' rows set ' + editfield + ' ' + editvalue + '?');      switch (editrows) {        case "all" :          rows = $scope.studentterms.rows;          break;        case "visible" :          rows = $scope.studentterms.getvisiblerows();          break;        case "selected" :          rows = $scope.studentterms.api.selection.getselectedgridrows();          break;      }        switch (editfield) {        case "program" :          for(var = 0; < rows.length; i++) {            idlist[i] = rows[i].id;            $scope.studentterms[i].program_enrolled__c = editvalue;          }            break;        case "appl. asset" :          for(var = 0; < rows.length; i++) {            idlist[i] = rows[i].id;            $scope.studentterms[i].applied_for_asset__c = editvalue;          }            break;        case "4 year degree" :          for(var = 0; < rows.length; i++) {            idlist[i] = rows[i].id;            $scope.studentterms[i].has_student_completed_4_year_degree__c = editvalue;          }            break;      }        termsservice.massupdate(idlist,editfield,editvalue).then(function() {        $scope.gridoptions.data = $scope.studentterms;        if($scope.searchtext) {              $scope.refreshdata();            }        notification.success(editrows + 'rows updated - ' + editfield + 'set ' + editvalue);        promise.resolve();      }).catch(function(err) {        console.log(err);        notification.error('mass update failed.');        promise.reject();      });    }  

and app

  var _massupdate = function(editrows,editfield,editvalue) {      var deferred = $q.defer();      var action = $window.scholarship_app.vfremoting.termsservice.massupdate;      visualforce.remoting.manager.invokeaction(action, function(result, event) {        $rootscope.$apply(function() {          if (event.status) {            deferred.resolve(result);          } else {            deferred.reject(event);          }        });      }, {buffer: true, escape: false, timeout: 30000});      return deferred.promise;    };