AngularJS动态路由

Question

I currently have an AngularJS application with routing built in. It works and everything is ok.

My app.js file looks like this:

angular.module('myapp', ['myapp.filters', 'myapp.services', 'myapp.directives']).
  config(['$routeProvider', function ($routeProvider) {
      $routeProvider.when('/', { templateUrl: '/pages/home.html', controller: HomeController });
      $routeProvider.when('/about', { templateUrl: '/pages/about.html', controller: AboutController });
      $routeProvider.when('/privacy', { templateUrl: '/pages/privacy.html', controller: AboutController });
      $routeProvider.when('/terms', { templateUrl: '/pages/terms.html', controller: AboutController });
      $routeProvider.otherwise({ redirectTo: '/' });
  }]);

My app has a CMS built in where you can copy and add new html files within the /pages directory.

I would like to still go through the routing provider though even for the new dynamically added files.

In an ideal world the routing pattern would be:

$routeProvider.when('/ pagename ', { templateUrl: '/pages/ pagename .html', controller: CMSController });

So if my new page name was "contact.html" I would like angular to pick up "/contact" and redirect to "/pages/contact.html".

Is this even possible?! and if so how?!

Update

I now have this in my routing config:

$routeProvider.when('/page/:name', { templateUrl: '/pages/home.html', controller: CMSController })

and in my CMSController:

function CMSController($scope, $route, $routeParams) {
    $route.current.templateUrl = '/pages/' + $routeParams.name + ".html";
    alert($route.current.templateUrl);
}
CMSController.$inject = ['$scope', '$route', '$routeParams'];

This sets the current templateUrl to the right value.

However I would now like to change the ng-view with the new templateUrl value. How is this accomplished?

Answer 1

angular.module('myapp', ['myapp.filters', 'myapp.services', 'myapp.directives']).
        config(['$routeProvider', function($routeProvider) {
        $routeProvider.when('/page/:name*', {
            templateUrl: function(urlattr){
                return '/pages/' + urlattr.name + '.html';
            },
            controller: 'CMSController'
        });
    }
]);

• Adding * let you work with multiple levels of directories dynamically. Example: /page/cars/selling/list will be catch on this provider

From the docs (1.3.0):

"If templateUrl is a function, it will be called with the following parameters:

{Array.} - route parameters extracted from the current $location.path() by applying the current route"

Also

when(path, route) : Method

• path can contain named groups starting with a colon and ending with a star: eg:name*. All characters are eagerly stored in $routeParams under the given name when the route matches.

Answer 2

Ok solved it.

Added the solution to GitHub - http://gregorypratt.github.com/AngularDynamicRouting

In my app.js routing config:

$routeProvider.when('/pages/:name', {
    templateUrl: '/pages/home.html', 
    controller: CMSController 
});

Then in my CMS controller:

function CMSController($scope, $route, $routeParams) {

    $route.current.templateUrl = '/pages/' + $routeParams.name + ".html";

    $.get($route.current.templateUrl, function (data) {
        $scope.$apply(function () {
            $('#views').html($compile(data)($scope));
        });
    });
    ...
}
CMSController.$inject = ['$scope', '$route', '$routeParams'];

With #views being my <div id="views" ng-view></div>

So now it works with standard routing and dynamic routing.

To test it I copied about.html called it portfolio.html, changed some of it's contents and entered /#/pages/portfolio into my browser and hey presto portfolio.html was displayed....

Updated Added $apply and $compile to the html so that dynamic content can be injected.

Answer 3

I think the easiest way to do such thing is to resolve the routes later, you could ask the routes via json, for example. Check out that I make a factory out of the $routeProvider during config phase, via $provide, so I can keep using the $routeProvider object in the run phase, and even in controllers.

'use strict';

angular.module('myapp', []).config(function($provide, $routeProvider) {
    $provide.factory('$routeProvider', function () {
        return $routeProvider;
    });
}).run(function($routeProvider, $http) {
    $routeProvider.when('/', {
        templateUrl: 'views/main.html',
        controller: 'MainCtrl'
    }).otherwise({
        redirectTo: '/'
    });

    $http.get('/dynamic-routes.json').success(function(data) {
        $routeProvider.when('/', {
            templateUrl: 'views/main.html',
            controller: 'MainCtrl'
        });
        // you might need to call $route.reload() if the route changed
        $route.reload();
    });
});

Answer 4

In the $routeProvider URI patters, you can specify variable parameters, like so: $routeProvider.when('/page/:pageNumber' ... , and access it in your controller via $routeParams.

There is a good example at the end of the $route page: http://docs.angularjs.org/api/ng.$route

EDIT (for the edited question):

The routing system is unfortunately very limited - there is a lot of discussion on this topic, and some solutions have been proposed, namely via creating multiple named views, etc.. But right now, the ngView directive serves only ONE view per route, on a one-to-one basis. You can go about this in multiple ways - the simpler one would be to use the view's template as a loader, with a <ng-include src="myTemplateUrl"></ng-include> tag in it ($scope.myTemplateUrl would be created in the controller).

I use a more complex (but cleaner, for larger and more complicated problems) solution, basically skipping the $route service altogether, that is detailed here:

http://www.bennadel.com/blog/2420-Mapping-AngularJS-Routes-Onto-URL-Parameters-And-Client-Side-Events.htm

Answer 5

Not sure why this works but dynamic (or wildcard if you prefer) routes are possible in angular 1.2.0-rc.2...

http://code.angularjs.org/1.2.0-rc.2/angular.min.js
http://code.angularjs.org/1.2.0-rc.2/angular-route.min.js

angular.module('yadda', [
  'ngRoute'
]).

config(function ($routeProvider, $locationProvider) {
  $routeProvider.
    when('/:a', {
  template: '<div ng-include="templateUrl">Loading...</div>',
  controller: 'DynamicController'
}).


controller('DynamicController', function ($scope, $routeParams) {
console.log($routeParams);
$scope.templateUrl = 'partials/' + $routeParams.a;
}).

example.com/foo -> loads "foo" partial

example.com/bar-> loads "bar" partial

No need for any adjustments in the ng-view. The '/:a' case is the only variable I have found that will acheive this.. '/:foo' does not work unless your partials are all foo1, foo2, etc... '/:a' works with any partial name.

All values fire the dynamic controller - so there is no "otherwise" but, I think it is what you're looking for in a dynamic or wildcard routing scenario..

Answer 6

As of AngularJS 1.1.3, you can now do exactly what you want using the new catch-all parameter.

https://github.com/angular/angular.js/commit/7eafbb98c64c0dc079d7d3ec589f1270b7f6fea5

From the commit:

This allows routeProvider to accept parameters that matches substrings even when they contain slashes if they are prefixed with an asterisk instead of a colon. For example, routes like edit/color/:color/largecode/*largecode will match with something like this http://appdomain.com/edit/color/brown/largecode/code/with/slashs .

I have tested it out myself (using 1.1.5) and it works great. Just keep in mind that each new URL will reload your controller, so to keep any kind of state, you may need to use a custom service.

Answer 7

Here is another solution that works good.

(function() {
    'use strict';

    angular.module('cms').config(route);
    route.$inject = ['$routeProvider'];

    function route($routeProvider) {

        $routeProvider
            .when('/:section', {
                templateUrl: buildPath
            })
            .when('/:section/:page', {
                templateUrl: buildPath
            })
            .when('/:section/:page/:task', {
                templateUrl: buildPath
            });



    }

    function buildPath(path) {

        var layout = 'layout';

        angular.forEach(path, function(value) {

            value = value.charAt(0).toUpperCase() + value.substring(1);
            layout += value;

        });

        layout += '.tpl';

        return 'client/app/layouts/' + layout;

    }

})();