What is the best way to invoke a function within a controller from a .factory service?

I have been working on a code snippet where I am trying to create a generic function. This function, when given the name of a function in my controller, should be run from a factory.

app.factory('myfactory', function () {

    return {
      create: function (name_of_function) {

        angular.element(document.body).append('<button ng-click="'+name_of_function+'">trigger my function</button>') 

          return "";
      }
    };
  });

The 'create' function is implemented like this:

I pass the name of my function so that when I click on the button, it will execute the function found in the controller.

function HelloCtrl($scope, myfactory) {
  //name of my function
  myfactory.create("myfunction()");
  $scope.myfunction=function(){
    alert("it works")
  }
}

Can someone guide me on how to achieve this?

https://plnkr.co/edit/z6s129TQ82REyCDscJTq?p=preview

Answer №1

If you want to implement this functionality, consider the following approach:

Instead of directly appending HTML strings to the body in your controller, have your factory return the desired HTML string and then compile it before appending it to the body.

// Example of a Concrete Factory in Angular.js

var app = angular.module('plunker', []);

// Concrete Factory
app.factory('myfactory', function () {

    
  return {
    create: function (name_of_function) {
  
         return '<button ng-click="'+name_of_function+'">trigger my function</button>';

      }
  };
});


function HelloCtrl($scope, myfactory,$compile) {
 
  
  angular.element(document.body).append($compile(myfactory.create("myfunction()"))($scope))


  $scope.myfunction=function(){
    alert("it works")
  }
}
<!DOCTYPE html>
<html ng-app="plunker">

<head>
  <meta charset="utf-8" />
  <title>AngularJS Plunker</title>
  <link data-require="bootstrap-css@*" data-semver="3.0.2" rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.2/css/bootstrap.min.css" />
  <script>
    document.write('<base href="' + document.location + '" />');
  </script>
  <link rel="stylesheet" href="style.css" />
  <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.2.2/angular.js"></script>
  
  <script src="app.js"></script>
</head>

<body>
  <div ng-controller="HelloCtrl">
    
  </div>
  <br />

</body>

</html>

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