[聚合文章] 使用ui-route实现多层嵌套路由

JavaScript 2018-01-09 18 阅读

一、预期实现效果:

https://liyuan-meng.github.io/uiRouter-app/index.html

 

(项目地址:https://github.com/liyuan-meng/uiRouter-app)

二、分析题目要求,给出依赖关系,构建项目

1. service:

(1)根据条件查询people数据checkPeople.service,不给出条件则查询所有。

(2)得到路由信息getStateParams.service。

2. components:

(1)hello模块:点击button按钮更改内容。

(2)peolpleList模块:显示people列表,点击people显示people详情。依赖于checkPeople.service模块。

(3)peopleDetail模块:显示people详情,依赖于checkPeople.service模块和getStateParams.service模块。

3. 构建项目:

如图所示:component目录用来保存所有服务模块和业务模块,lib目录保存外部引用(我是用的是angular.js1.5.8和ui-route0.2.18),app.config.js文件用来配置路由,index.html则作为入口文件。

三、实现这个例子

1. 首页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)导入lib中的文件以及所有用到的service和component服务的文件。

(2)ng-app="helloSolarSystem"指明了从helloSolarSystem模块开始解析。

(3)定义视图<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)模块名字:helloSolarSystem;

(2)注入'peopleList', 'peopleDetail', 'hello','ui.router'模块。

(3)配置stateProvider服务的视图控制,例如第一个名为helloState的视图控制器:当ui-sref == "helloState"的时候,路由更新为url的值#/helloState,并且<ui-view></ui-view>中显示的内容为<hello></hello>组件解析出的内容。

(4)嵌套路由的实现:名为peopleState的视图控制器是父路由。名为peopleState.details的视图控制器是子路由。这是一种相对路由方式,父路由将匹配.../index.html#/peopleState/,子路由将匹配.../index.html#/peopleState/detail/x(x是/detail/:id中的id的值)。如果改成绝对路由的形式,只需要写成url:'^/detail/:id',这时子路由将匹配.../index.html#/detail/x(x是/detail/:id中的id的值)。

4. 实现checkPeople.service(根据条件查找people)

checkPeople.sercice.js

'use strict';//根据条件(参数)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这个函数中,我们想要返回一个保存people信息的数组,但是由于使用$http().then()服务的时候,这是一个异步请求,我们并不知道请求什么时候结束,所以世界返回people数组是有问题的。我们注意到,$http().then()是一个Promise对象,所以我们可以想到直接将这个对象返回,这样在就可以使用"函数的结果.then(function(data))"来得到异步请求拿来的数据data。

3. 实现getStateParams.service(获取路由信息)

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)这里的getParams函数返回的是路由信息的最后一个数据,也就是people的id,这个service有些特殊,不够通用,可能还需要优化一下会更加合理。不过并不影响我们的需求。

4. 实现hello模块

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. 实现peolpeList模块:

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)这里的<ui-view></ui-view>用来显示peopleList的子组件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. 实现peopleDetail模块

peopleDetail.template.html

<ul ng-repeat="item in peopleDetails track by $index">    <li>名字: {{item.name}}</li>    <li>介绍: {{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.源码:

https://github.com/liyuan-meng/uiRouter-app

 

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