Can I inject a service into a directive in AngularJS?

Question

I am trying to inject a service into a directive like below:

 var app = angular.module(\'app\',[]);
 app.factory(\'myData\', function(){
     return {
             


        

Answer 1

You can also use the $inject service to get whatever service you like. I find that useful if I don't know the service name ahead of time but know the service interface. For example a directive that will plug a table into an ngResource end point or a generic delete-record button which interacts with any api end point. You don't want to re-implement the table directive for every controller or data-source.

template.html

my-directive.directive.coffee

angular.module 'my.module'
  .factory 'myDirective', ($injector) ->
    directive = 
      restrict: 'A'
      link: (scope, element, attributes) ->
        scope.apiService = $injector.get(attributes.apiService)

now your 'anonymous' service is fully available. If it is ngResource for example you can then use the standard ngResource interface to get your data

For example:

scope.apiService.query((response) ->
  scope.data = response
, (errorResponse) ->
  console.log "ERROR fetching data for service: #{attributes.apiService}"
  console.log errorResponse.data
)

I have found this technique to be very useful when making elements that interact with API endpoints especially.