Javascript – Can you pass parameters to an AngularJS controller on creation

angularjsjavascript

I have a controller responsible for communicating with an API to update properties of a user, name, email, etc. Each user has an 'id' which is passed from the server when the profile page is viewed.

I would like to pass this value to the AngularJS controller so it knows what the API entry point is for the current user. I've tried passing the value in ng-controller. For example:

function UserCtrl(id, $scope, $filter) {

$scope.connection = $resource('api.com/user/' + id)

and in the HTML

<body ng-controller="UserCtrl({% id %})">

where {% id %} print the id sent from the server. but I get errors.

What is the correct way to pass a value into a controller on its creation?

Best Answer

Notes:

This answer is old. This is just a proof of concept on how the desired outcome can be achieved. However, it may not be the best solution as per some comments below. I don't have any documentation to support or reject the following approach. Please refer to some of the comments below for further discussion on this topic.

Original Answer:

I answered this to Yes you absolutely can do so using ng-init and a simple init function.

Here is the example of it on plunker

HTML 

<!DOCTYPE html>
<html ng-app="angularjs-starter">
  <head lang="en">
    <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.0.3/angular.min.js"></script>
    <script src="app.js"></script>
  </head>  
  <body ng-controller="MainCtrl" ng-init="init('James Bond','007')">
    <h1>I am  {{name}} {{id}}</h1>
  </body>
</html>

JavaScript

var app = angular.module('angularjs-starter', []);

app.controller('MainCtrl', function($scope) {

  $scope.init = function(name, id)
  {
    //This function is sort of private constructor for controller
    $scope.id = id;
    $scope.name = name; 
    //Based on passed argument you can make a call to resource
    //and initialize more objects
    //$resource.getMeBond(007)
  };


});
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