将数组从服务传递到控制器

Question

I cannot seem to figure out how to pass an array from service to a controller.

I have a simple service

.service('test', function() {
    var array = []

    return array;
})

And a controller where I call this function when a button is pressed

$scope.testArray = function() {
    $scope.test = test.array;

    console.log("test: ", $scope.test);
};

I get an error test is undefined. Can anyone explain to me please why this doesn't work and how to fix it? I tried storing that array in a separate object but no luck either. THanks

Answer 1

(See also: this SO question about Angular providers )

A service should put properties directly on this . So instead of

.service('test', function() {
    var array = [];

    return array; 
})

try

.service('test', function() {
    this.array = [];
})

(code style notwithstanding; many would suggest preferring function access over direct object access)

.service('test', function() {
    var array = [];
    this.getArray = function(){
        return array;
    };
})

Answer 2

Just change test.array with test :

JSFiddle

.controller('youCtrl', ['$scope', 'test', function ($scope, test) {
    $scope.testArray = function() {
       $scope.test = test;

       console.log("test: ", $scope.test);
    };
});

Answer 3

Add the array variable to your service .

angular.module('moduleName').service('test', function() {
  this.array = [];
});

Inject your service into your controller .

angular.module('moduleName').controller('controllerName', function(test) {
  $scope.test = test.array;

  console.log("test: ", $scope.test);
});