How to load a service on demand?

Question

Angular

Can I take the attribute values ​​in the directive and add the service as a dependency in the controller?
If so, how?
Thank you in advance
Code

angular.module('tableData', [])
  .directive('tableData', tableData)

// ################# Логика ################# // 

function tableData() {

  return {
    restrick: 'E',
    replace: true,
    transclude: true,
    template: require('../../template/directives/tableData.html'),
    controller: TableCtrl,
    controllerAs: 'table',
    bindToController: {
      type: '@'
    }
  }
}


function TableCtrl($scope, $filter) {

  var wm = this;
  wm.type // Название
}

There is one option, but maybe you can do better

angular.module('tableData', [])
  .directive('tableData', tableData)
  .service('includeService', function(service1, service2){
    methods = {
      service1: oneService,
      service2: otherService
    }

    return  methods

  //#######################

  function oneService() {
    return service1
  }

  function otherService() {
    return service2
  }

  })

// ################# Логика ################# // 

function tableData() {

  return {
    restrick: 'E',
    replace: true,
    transclude: true,
    template: require('../../template/directives/tableData.html'),
    controller: TableCtrl,
    controllerAs: 'table',
    bindToController: {
      type: '@'
    }
  }
}


function TableCtrl($scope, $filter, includeService) {
  
  var wm = this;
  wm.type // Название

  includeService[wm.type]


}



//################# Конструктори ################# //

Answer 1

make stateless directives and life will be a little easier without these perversions. Does the directive need data? Throw them outside through the attributes. Introduce yourself such a simple rule that directives do not receive state themselves through services. And the services should be used by the directive only to update the state of the data outside, but again, they themselves do not change anything.

Answer 2

So look , it seems there is material on this subject.

Answer 3

You get something like hiding dependencies in this case. Why not just inject both services - and use the one you need?