Angularjs add controller dynamically

It looks like this questions already asked few times but there is no correct answer to it.

my case: i'm loading a template (with html and script) init to div using ajax (not using angular routing temple for some reason).

index.html (main)

<!DOCTYPE html>
<html ng-app="app" ng-controller="AppCtrl">
    <head>
        <meta charset="utf-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Web</title>
        <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.9/angular.min.js"></script>
    </head>
    <body>
        <div class="container body-content">
            <div class="dynamic-content" >
                <!-- Loading content Here -->
            </div>
            <button ng-click="loadTemplate()">Load Template</button>
        </div>

        <script>
            angular.module('app', [])
            .controller('AppCtrl', function ($scope) {
                $scope.someData = {};
                $scope.loadTemplate = function() {
                    ....
                    //AJAX to get the templet.html
                    //and load it into .dynamic-content
                    //then applying scope();                  
                }
            });
        </script>
    </body>
</html>

template.html (template)

<div ng-controller="TempCtrl">
    <h2>About</h2>
    <h3>{{total}}</h3>
    <p>Testing the total</p>
    <button ng-click="update()">Update</button>
</div>

<script>
    console.log('begin')
    angular.module('app')
    .controller('TempCtrl', function ($scope) {
        $scope.total = 0;
        console.log('inside')
        $scope.update = function () {
            $scope.total += 1;
        };
    });
    console.log('end')
</script>

when i click the button Load Template it loads the template.html file in to container but i'm getting error

Error: [ng:areq] Argument 'TempCtrl' is not a function, got undefined

though its being added to app controllers.

How can i add controllers dynamically and get it work with dynamic html nodes

DEMO HERE https://plnkr.co/edit/EAa9Md36hDzpQ1BgIQKg?p=preview

标签： javascript html angularjs single-page-application

3条回答

贼婆χ

2楼-- · 2019-07-15 03:47

This blog describes how to fiddle with angular to force it to load additional controllers after it has been bootstrapped:

http://www.bennadel.com/blog/2553-loading-angularjs-components-after-your-application-has-been-bootstrapped.htm

Of course, this is completely unsupported, and could be broken by changes to angular at any time.

But, here is an updated version of your code using this method:

var app = angular.module('app', [])
app.config(
  function($controllerProvider, $provide, $compileProvider) {
    // Since the "shorthand" methods for component
    // definitions are no longer valid, we can just
    // override them to use the providers for post-
    // bootstrap loading.
    console.log("Config method executed.");
    // Let's keep the older references.
    app._controller = app.controller;
    app._service = app.service;
    app._factory = app.factory;
    app._value = app.value;
    app._directive = app.directive;
    app.controller = function(name, constructor) {
      console.log("controller...");
      console.log(name);
      console.dir(constructor);
      $controllerProvider.register(name, constructor);
      return (this);
    };
    // Provider-based service.
    app.service = function(name, constructor) {
      $provide.service(name, constructor);
      return (this);
    };
    // Provider-based factory.
    app.factory = function(name, factory) {
      $provide.factory(name, factory);
      return (this);
    };
    // Provider-based value.
    app.value = function(name, value) {
      $provide.value(name, value);
      return (this);
    };
    // Provider-based directive.
    app.directive = function(name, factory) {
      $compileProvider.directive(name, factory);
      return (this);
    };
  });
app.controller('AppCtrl', function($scope, $http, $compile) {
  $scope.someData = {};
  $scope.loadTemplate = function() {
    $http.get("template.html")
      .then(function(r) {
        // load in the html, including the script, which will be executed
        $(".dynamic-content").html(
          r.data
        );
        // compile the loaded html into an actual template and put it back where it was
        $(".dynamic-content").html($compile($(".dynamic-content").html())($scope));
      })
  }
});

Note that I used jQuery to place the HTML into the DOM, causing the script to execute, then to grab the HTML back out of the DOM so it could be compiled, after which I placed it back in the DOM again.

Also, there is an undefined variable in your template.html, so I updated it to look like this:

<script>
    console.log('begin')
    angular.module('app')
    .controller('TempCtrl', function ($scope) {
        $scope.total = 0;
        console.log('inside')
        $scope.update = function () {
            $scope.total += 1;
        };
    });
    console.log('end')
</script>

<div ng-controller="TempCtrl">
    <h2>About</h2>
    <h3>{{total}}</h3>
    <p>Testing the total</p>
    <button ng-click="update()">Update</button>
</div>

Here is a working plunk: http://plnkr.co/edit/cB5N05

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劳资没心，怎么记你

3楼-- · 2019-07-15 03:50

Try loading the templates controller in the index.html, instead of in the template.html, that way it is already existing when the markup is looking for it. In index.html script portion:

  angular.modules('app', [])
        .controller('AppCtrl', function ($scope) {
            $scope.someData = {};
            $scope.loadTemplate = function() {
                ....
                //AJAX to get the templet.html
                //and load it into .dynamic-content
                //then applying scope();                  
            }
        }).controller('TempCtrl', function ($scope) {
    $scope.total = 0;
    console.log('inside')
    $scope.update = function () {
        total += total;
    };
});

EDIT: This is when having multiple JS files that reference the app module would be handy, that way each file is owning a controller.

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爷的心禁止访问

4楼-- · 2019-07-15 03:55

Updated Dave's example with angular components support

app.config(
  function ($controllerProvider, $provide, $compileProvider) {

    var app = angular.module('app');

    // Let's keep the older references.
    app._controller = app.controller;
    app._service = app.service;
    app._factory = app.factory;
    app._value = app.value;
    app._directive = app.directive;
    app._component = app.component;

    // Provider-based controller.
    app.controller = function (name, constructor) {
        $controllerProvider.register(name, constructor);
        return ( this );
    };
    // Provider-based service.
    app.service = function (name, constructor) {
        $provide.service(name, constructor);
        return ( this );
    };
    // Provider-based factory.
    app.factory = function (name, factory) {
        $provide.factory(name, factory);
        return ( this );
    };
    // Provider-based value.
    app.value = function (name, value) {
        $provide.value(name, value);
        return ( this );
    };
    // Provider-based directive.
    app.directive = function (name, factory) {
        $compileProvider.directive(name, factory);
        return ( this );
    };
    // Provider-based component.
    app.component = function (name, options) {
        $compileProvider.component(name, options);
        return ( this );
    };

});

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Angularjs add controller dynamically

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