本文介紹了AngularJS使用ui-route實(shí)現(xiàn)多層嵌套路由的示例,分享給大家,具體如下:
一、預(yù)期實(shí)現(xiàn)效果:
https://liyuan-meng.github.io/uiRouter-app/index.html
(項(xiàng)目地址:https://github.com/liyuan-meng/uiRouter-app)
二、分析題目要求,給出依賴關(guān)系,構(gòu)建項(xiàng)目
1. service:
(1)根據(jù)條件查詢people數(shù)據(jù)checkPeople.service,不給出條件則查詢所有。
(2)得到路由信息getStateParams.service。
2. components:
(1)hello模塊:點(diǎn)擊button按鈕更改內(nèi)容。
(2)peolpleList模塊:顯示people列表,點(diǎn)擊people顯示people詳情。依賴于checkPeople.service模塊。
(3)peopleDetail模塊:顯示people詳情,依賴于checkPeople.service模塊和getStateParams.service模塊。
3. 構(gòu)建項(xiàng)目:
如圖所示:component目錄用來(lái)保存所有服務(wù)模塊和業(yè)務(wù)模塊,lib目錄保存外部引用(我是用的是angular.js1.5.8和ui-route0.2.18),app.config.js文件用來(lái)配置路由,index.html則作為入口文件。
三、實(shí)現(xiàn)這個(gè)例子
1. 首頁(yè)index.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <script src="./lib/angular.js"></script> <script src="./lib/angular-ui-route.js"></script> <script src="./app.config.js"></script> <script src="./components/core/people/checkPeople.service.js"></script> <script src="./components/core/people/getStateParams.service.js"></script> <script src="./components/hello/hello.component.js"></script> <script src="./components/people-list/people-list.component.js"></script> <script src="./components/people-detail/people-detail.component.js"></script> </head> <body ng-app="helloSolarSystem"> <div> <a ui-sref="helloState">Hello</a> <a ui-sref="aboutState">About</a> <a ui-sref="peopleState">People</a> </div> <ui-view></ui-view> </body> </html>
(1)導(dǎo)入lib中的文件以及所有用到的service和component服務(wù)的文件。
(2)ng-app="helloSolarSystem"指明了從helloSolarSystem模塊開(kāi)始解析。
(3)定義視圖<ui-view></ui-view>
2. 配置路由app.config.js
'use strict'; angular.module("helloSolarSystem", ['peopleList', 'peopleDetail', 'hello','ui.router']). config(['$stateProvider', function ($stateProvider) { $stateProvider.state('helloState', { url: '/helloState', template:'<hello></hello>' }).state('aboutState', { url: '/about', template: '<h4>Its the UI-Router Hello Solar System app!</h4>' }).state('peopleState', { url: '/peopleList', template:'<people-list></people-list>' }).state('peopleState.details', { url:'/detail/:id', template: '<people-detail></people-detail>' }) } ]);
(1)模塊名字:helloSolarSystem;
(2)注入'peopleList', 'peopleDetail', 'hello','ui.router'模塊。
(3)配置stateProvider服務(wù)的視圖控制,例如第一個(gè)名為helloState的視圖控制器:當(dāng)ui-sref == "helloState"的時(shí)候,路由更新為url的值#/helloState,并且<ui-view></ui-view>中顯示的內(nèi)容為<hello></hello>組件解析出的內(nèi)容。
(4)嵌套路由的實(shí)現(xiàn):名為peopleState的視圖控制器是父路由。名為peopleState.details的視圖控制器是子路由。這是一種相對(duì)路由方式,父路由將匹配.../index.html#/peopleState/,子路由將匹配.../index.html#/peopleState/detail/x(x是/detail/:id中的id的值)。如果改成絕對(duì)路由的形式,只需要寫(xiě)成url:'^/detail/:id',這時(shí)子路由將匹配.../index.html#/detail/x(x是/detail/:id中的id的值)。
4. 實(shí)現(xiàn)checkPeople.service(根據(jù)條件查找people)
checkPeople.sercice.js
'use strict'; //根據(jù)條件(參數(shù))查找信息。 angular.module('people.checkPeople', ['ui.router']). factory('CheckPeople', ['$http', function ($http) { return { getData: getData }; function getData(filed) { var people; var promise = $http({ method: 'GET', url: './data/people.json' }).then(function (response) { if (filed) { people = response.data.filter(function (value) { if (Number(value.id) === Number(filed)) { return value; } }) } else { people = response.data; } return people; }); return promise; } }]);
(1)在getData這個(gè)函數(shù)中,我們想要返回一個(gè)保存people信息的數(shù)組,但是由于使用$http().then()服務(wù)的時(shí)候,這是一個(gè)異步請(qǐng)求,我們并不知道請(qǐng)求什么時(shí)候結(jié)束,所以世界返回people數(shù)組是有問(wèn)題的。我們注意到,$http().then()是一個(gè)Promise對(duì)象,所以我們可以想到直接將這個(gè)對(duì)象返回,這樣在就可以使用"函數(shù)的結(jié)果.then(function(data))"來(lái)得到異步請(qǐng)求拿來(lái)的數(shù)據(jù)data。
3. 實(shí)現(xiàn)getStateParams.service(獲取路由信息)
getStatePatams.service.js
"use strict"; angular.module("getStateParams", ['ui.router']). factory("GetStateParams", ["$location", function ($location) { return { getParams: getParams }; function getParams() { var partUrlArr = $location.url().split("/"); return partUrlArr[partUrlArr.length-1]; } }]);
(1)這里的getParams函數(shù)返回的是路由信息的最后一個(gè)數(shù)據(jù),也就是people的id,這個(gè)service有些特殊,不夠通用,可能還需要優(yōu)化一下會(huì)更加合理。不過(guò)并不影響我們的需求。
4. 實(shí)現(xiàn)hello模塊
hello.template.html
<div> <div ng-hide="hideFirstContent">hello solar sytem!</div> <div ng-hide="!hideFirstContent">whats up solar sytem!</div> <button ng-click="ctlButton()">click</button> </div>
hello.component.js
'use strict'; angular.module("hello", []) .component('hello', { templateUrl: './components/hello/hello.template.html', controller: ["$scope", function HelloController($scope) { $scope.hideFirstContent = false; $scope.ctlButton = function () { this.hideFirstContent = !this.hideFirstContent; }; } ] });
5. 實(shí)現(xiàn)peolpeList模塊:
peopleList.template.html
<div> <ul> <a ng-repeat="item in people" ui-sref="peopleState.details({id:item.id})"> <li>{{item.name}}</li> </a> </ul> <ui-view></ui-view> </div>
(1)這里的<ui-view></ui-view>用來(lái)顯示peopleList的子組件pepleDetail
peopleList.component.js
'use strict'; angular.module("peopleList", ['people.checkPeople']) .component('peopleList', { templateUrl: './components/people-list/people-list.template.html', controller: ['CheckPeople','$scope', function PeopleListController(CheckPeople, $scope) { $scope.people = []; CheckPeople.getData().then(function(data){ $scope.people = data; }); } ] });
6. 實(shí)現(xiàn)peopleDetail模塊
peopleDetail.template.html
<ul ng-repeat="item in peopleDetails track by $index"> <li>名字: {{item.name}}</li> <li>介紹: {{item.intro}}</li> </ul>
peopleDetail.component.js
'use strict'; angular.module("peopleDetail", ['people.checkPeople', 'getStateParams']) .component('peopleDetail', { templateUrl: './components/people-detail/people-detail.template.html', controller: ['CheckPeople', 'GetStateParams', '$scope', function peopleDetailController(CheckPeople, GetStateParams, $scope) { $scope.peopleDetails = []; CheckPeople.getData(GetStateParams.getParams()).then(function(data){ $scope.peopleDetails = data; }); } ] });
7.源碼:https://github.com/liyuan-meng/uiRouter-app
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