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POAngularJS nested routes example questions
 

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    <p>Any explanation why the sample code (ui-router/sample/index.html) for angular-ui-router (<a href="https://github.com/angular-ui/ui-router" rel="nofollow">https://github.com/angular-ui/ui-router</a>) looks like this. Specifically:</p> <ol> <li>Why the nested definitions of objects like controllers?</li> <li><p>Why the specification of dependencies like this: </p> <p>angular.module('sample', ['ui.compat']) .config( [ '$stateProvider', '$routeProvider', '$urlRouterProvider', function ($stateProvider, $routeProvider, $urlRouterProvider) {</p></li> </ol> <p>thanks</p> <pre><code>&lt;!doctype html&gt; &lt;html lang="en" ng-app="sample"&gt;&lt;head&gt; &lt;meta charset="utf-8"&gt; &lt;link rel="stylesheet" type="text/css" href="bootstrap.min.css"&gt; &lt;style type="text/css"&gt; .fade-enter-setup, .fade-leave-setup { transition: opacity 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0s; } .fade-enter-setup, .fade-leave-setup.fade-leave-start { opacity: 0; } .fade-leave-setup, .fade-enter-setup.fade-enter-start { opacity: 1; } &lt;/style&gt; &lt;script src="../lib/angular-1.1.4.js"&gt;&lt;/script&gt; &lt;script src="../build/angular-ui-router.js"&gt;&lt;/script&gt; &lt;!-- could easily use a custom property of the state here instead of 'name' --&gt; &lt;title ng-bind="$state.current.name + ' - ui-router'"&gt;ui-router&lt;/title&gt; &lt;/head&gt;&lt;body&gt; &lt;div class="navbar navbar-fixed-top"&gt; &lt;div class="navbar-inner"&gt;&lt;div class="container"&gt; &lt;a class="brand" href="#"&gt;ui-router&lt;/a&gt; &lt;ul class="nav"&gt; &lt;li ng-class="{ active: $state.includes('contacts') }"&gt;&lt;a href="#/contacts"&gt;Contacts&lt;/a&gt;&lt;/li&gt; &lt;li ng-class="{ active: $state.includes('about') }"&gt;&lt;a href="#/about"&gt;About&lt;/a&gt;&lt;/li&gt; &lt;/ul&gt; &lt;p class="navbar-text pull-right" ui-view="hint"&gt;&lt;/p&gt; &lt;/div&gt;&lt;/div&gt; &lt;/div&gt; &lt;div class="container" style="margin-top:60px" ui-view ng-animate="{enter:'fade-enter'}"&gt;&lt;/div&gt; &lt;hr&gt; &lt;pre&gt; $state = {{$state.current.name}} $stateParams = {{$stateParams}} &lt;/pre&gt; &lt;/body&gt;&lt;script&gt; function findById(a, id) { for (var i=0; i&lt;a.length; i++) { if (a[i].id == id) return a[i]; } } angular.module('sample', ['ui.compat']) .config( [ '$stateProvider', '$routeProvider', '$urlRouterProvider', function ($stateProvider, $routeProvider, $urlRouterProvider) { $urlRouterProvider .when('/c?id', '/contacts/:id') .otherwise('/'); $routeProvider .when('/user/:id', { redirectTo: '/contacts/:id', }) .when('/', { template: '&lt;p class="lead"&gt;Welcome to the ngStates sample&lt;/p&gt;&lt;p&gt;Use the menu above to navigate&lt;/p&gt;' + '&lt;p&gt;Look at &lt;a href="#/c?id=1"&gt;Alice&lt;/a&gt; or &lt;a href="#/user/42"&gt;Bob&lt;/a&gt; to see a URL with a redirect in action.&lt;/p&gt;', }); $stateProvider .state('contacts', { url: '/contacts', abstract: true, templateUrl: 'contacts.html', controller: [ '$scope', '$state', function ($scope, $state) { $scope.contacts = [{ id: 1, name: "Alice", items: [{ id: 'a', type: 'phone number', value: '555-1234-1234', },{ id: 'b', type: 'email', value: 'alice@mailinator.com', }], }, { id: 42, name: "Bob", items: [{ id: 'a', type: 'blog', value: 'http://bob.blogger.com', },{ id: 'b', type: 'fax', value: '555-999-9999', }], }, { id: 123, name: "Eve", items: [{ id: 'a', type: 'full name', value: 'Eve Adamsdottir', }], }]; $scope.goToRandom = function () { var contacts = $scope.contacts, id; do { id = contacts[Math.floor(contacts.length * Math.random())].id; } while (id == $state.params.contactId); $state.transitionTo('contacts.detail', { contactId: id }); }; }], }) .state('contacts.list', { // parent: 'contacts', url: '', templateUrl: 'contacts.list.html', }) .state('contacts.detail', { // parent: 'contacts', url: '/{contactId}', resolve: { something: [ '$timeout', '$stateParams', function ($timeout, $stateParams) { return $timeout(function () { return "Asynchronously resolved data (" + $stateParams.contactId + ")" }, 10); }], }, views: { '': { templateUrl: 'contacts.detail.html', controller: [ '$scope', '$stateParams', 'something', function ($scope, $stateParams, something) { $scope.something = something; $scope.contact = findById($scope.contacts, $stateParams.contactId); }], }, 'hint@': { template: 'This is contacts.detail populating the view "hint@"', }, 'menu': { templateProvider: [ '$stateParams', function ($stateParams){ // This is just to demonstrate that $stateParams injection works for templateProvider // $stateParams are the parameters for the new state we're transitioning to, even // though the global '$stateParams' has not been updated yet. return '&lt;hr&gt;&lt;small class="muted"&gt;Contact ID: ' + $stateParams.contactId + '&lt;/small&gt;'; }], }, }, }) .state('contacts.detail.item', { // parent: 'contacts.detail', url: '/item/:itemId', views: { '': { templateUrl: 'contacts.detail.item.html', controller: [ '$scope', '$stateParams', '$state', function ($scope, $stateParams, $state) { $scope.item = findById($scope.contact.items, $stateParams.itemId); $scope.edit = function () { $state.transitionTo('contacts.detail.item.edit', $stateParams); }; }], }, 'hint@': { template: 'Overriding the view "hint@"', }, }, }) .state('contacts.detail.item.edit', { views: { '@contacts.detail': { templateUrl: 'contacts.detail.item.edit.html', controller: [ '$scope', '$stateParams', '$state', function ($scope, $stateParams, $state) { $scope.item = findById($scope.contact.items, $stateParams.itemId); $scope.done = function () { $state.transitionTo('contacts.detail.item', $stateParams); }; }], }, }, }) .state('about', { url: '/about', templateProvider: [ '$timeout', function ($timeout) { return $timeout(function () { return "Hello world" }, 100); }], }) .state('empty', { url: '/empty', templateUrl: 'empty.html', controller: [ '$scope', '$state', function ($scope, $state) { // Using an object to access it via ng-model from child scope $scope.data = { initialViewTitle: "I am an initial view" } $scope.changeInitialViewTitle = function($event) { $state.transitionTo('empty.emptycontent'); }; $scope.showInitialView = function($event) { $state.transitionTo('empty'); }; }] }) .state('empty.emptycontent', { url: '/content', views: { 'emptycontent': { templateUrl: 'empty.content.html' } } }); }]) .run( [ '$rootScope', '$state', '$stateParams', function ($rootScope, $state, $stateParams) { $rootScope.$state = $state; $rootScope.$stateParams = $stateParams; }]); &lt;/script&gt;&lt;/html&gt; </code></pre>
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