AngularJs 第一个自定义指令编写

公司在做一个OA系统， 包括移动端（从微信企业号进入OA系统），电脑端。
电脑端还是用的传统的easyui做界面，asp.net mvc作为服务端。这个技术已经很成熟了配合权限框架很快就能开发出来。但是手机端之前团队也没有什么经验，我之前做过一个jqureymobile的项目，但是这个框架实在是太卡了，直接pass掉。恰好之前有自学一点点angularjs 所以我就推荐手机端的项目使用angularjs来开发，一来团队可以学习一些新技术跟上潮流，二来单页程序很适合我们目前的这个小项目，三是我们以后打算用phonegap直接打包webapp。好吧优点这么多那就开工吧（我们用的是1.5版本，2.0国内还比较少）。
由于团队之前没有接触过这个框架，所以大概花了3天时间来学习（正常开发任务还是有，相对减少），可想而知以angularjs学习曲线我们的成果不会好到哪里去，项目不等人，
angularjs确实很不错给前端带来很多新的概念：mvc 模块化 单页 依赖注入 指令 等。首先我们遇到的问题是怎么团队开发，不可能大家都读写一个js文件吧，于是采用第三方的oclazyload.js来动态加载js和模板，路由采用angular-ui-router，其次我们需要一款手机端的ui来配合angularjs，我们选用了淘宝的sui。一切准备好了，那就开始吧！
进入正题，我的第一个angularjs的指令设计，需求如下：
1.OA填完单之后，需要选择审核人。（这个比较次了，正规的OA是不需要自己选择审核人的，但是我们是简单版的，况且大名鼎鼎的阿里巴巴 钉钉OA也是这么设计的）。
2.做成通用组件。
需求就这些了，那么直接上结果看看：
1.主页面

2.审批页面

3.用车申请

4.选人指令

以上顺便介绍了一下我的OA系统，那么下边再看看最终做出来的选审核人的指令：
1.

2.

3.

5.
好吧这个功能基本是钉钉的翻版。那么我如何来设计这个指令的呢，首先，弹出框这些ui都是来自于sui的ui插件，我做的事情就是用angularjs的指令来封装ui和一些逻辑，最终达到的通用的目标。上代码：

/*
*用于选择部门及用户
*刘功葵 2016-4-9
*
*/
var departUser = angular.module("ktfOA");
//第一个指令，弹出部门和人员选择框
departUser.directive("departpopup", function ($http) {
return {
restrict: 'AECM',//<!-- departpopup -->
//replace: true,
transclude: true,
scope: {
pop: '@',//部门弹出框的id，为了让同一个页面多吃使用指令时，不出现重复ID
peng: '@',//人员弹出框id
selects: '=', //通过=绑定最终的选择结果，并传递到外层的controller
users: '=',
dowork: "&" //在选择用户时执行的方法
},

templateUrl: '/Areas/Phone/Directive/DepartUser/DepartUser.html',
controller: function ($scope) {
this.open = function () {
$.popup('#' + $scope.pop);
}

},
link: function (scope) {
scope.pop = scope.pop || "pop";
scope.peng = scope.peng || "peng";
scope.$emit('ngPageFinished'); //$emit 给父scope返回一个值 父scope可以监控这个值 然后执行一些代码 相当于事件传播
$http.post("/Phone/BusinessTravel/GetApiDepartList").success(function (msg) {
scope.departList = msg;
})
/*选择部门事件*/
scope.selectDepart = function (departId) {
$.popup('#' + scope.peng);
scope.formJson = { 'departId': departId }
$http.post("/Phone/BusinessTravel/GetAipAdminUserList", scope.formJson).success(function (msg) {
scope.adminUserList = msg;
})
}
scope.selects = [];
/*选择用户事件*/
scope.selectUser = function () {

scope.noPic = true;
if (this.itemUsr.AbsoluteImgSrc == "" || this.itemUsr.AbsoluteImgSrc == undefined) {

this.itemUsr.AbsoluteImgSrc = "/Images/UserHeadPic/default.jpg";
}
for (var i = 0; i < scope.selects.length; i++) {
if (scope.selects[i].UserNo == this.itemUsr.UserNo) {
$.alert('用户已选过，不能重复！');
return;
}
}
scope.selects.push(this.itemUsr);
scope.users += this.itemUsr.UserNo + ",";
$.closeModal('#' + scope.peng);
$.closeModal('#' + scope.pop);

if (scope.dowork != undefined) {
scope.dowork();
}

}
}

};

})

//第二个指令，依赖于第一个指令，用于显示最终的选择结果。
departUser.directive("userselect", function ($http) {
return {
restrict: 'AECM',//<!-- departpopup -->
replace: true,
require: '^?departpopup', //此处是指依赖上面一个指令
scope: {
selects: "=",
users: "="
},
template: ' <div> <div ng-click="delUser()" style="float:left;position:relative" ng-repeat="user in selects"><img style="border-radius:50%; height:56px;width:56px; overflow:hidden;" src="{{user.AbsoluteImgSrc}}" /><span style="position:absolute;left:7px;top:19px;font-size:small;color:white;text-align:center;width:40px;height:20px;" >{{user.UserName}}</span><span style="float:right;margin-top:8px;">...</span></div> <div style="float:left;margin-top:8px;"><a ng-click="Open()" class="open-about"><i class="fa fa-plus-circle fa-2x" style="color:#bab7b7"></i></a></div></div>',
link: function (scope, element, attrs, departpopupController) {
//$(".datetime-pickerStart").datetimePicker({});
//$(".datetime-pickerEnd").datetimePicker({});
scope.Open = function () {
departpopupController.open();

}

//删除选择的用户
scope.delUser = function () {

var userNo = this.user.UserNo;

for (var i = 0; i < scope.selects.length; i++) {
if (scope.selects[i].UserNo == userNo) {
scope.selects.splice(i, 1);
break;
}
}
scope.users = "";
for (var i = 0; i < scope.selects.length; i++) {
scope.users += scope.selects[i].UserNo + ",";
}

}
}

};

})

2.模版页面

<div>
<div class="popup" id="{{pop}}">
<header  class="bar bar-nav">
<a class="icon icon-left pull-left close-popup"></a>
</header>
<div class="bar bar-header-secondary" style="position:relative">
<div class="searchbar">
<a ng-click="abc()" class="searchbar-cancel">取消</a>
<div class="search-input">
<label class="icon icon-search" for="search"></label>
<input type="search"  id='search' placeholder='输入关键字...' />
</div>
</div>
</div>
<div class="list-block contacts-block">
<div class="list-group">
<ul>
<li ng-repeat="item in departList track by $index" class="open-services" ng-click="selectDepart(item.DepartID)" departid="{{item.DepartID}}">
<div class="item-content item-link">
<div class="item-inner">
<div class="item-title">
<span style="color:#c6c4c4">{{item.TreeText}}</span>  {{item.DepartName}}
</div>
</div>
</div>
</li>
</ul>
</div>
</div>
</div>
<div class="popup" id="{{peng}}">
<header class="bar bar-nav">
<a class="icon icon-left pull-left close-popup"></a>
</header>
<div class="bar bar-header-secondary" style="position:relative">
<div class="searchbar">
<a class="searchbar-cancel">取消</a>
<div class="search-input">
<label class="icon icon-search" for="search"></label>
<input type="search" id='search' placeholder='输入关键字...' />
</div>
</div>
</div>
<div class="list-block contacts-block">
<div class="list-group">
<ul ng-repeat="itemUsr in adminUserList track by $index">
<li ng-click="selectUser()" userno="{{itemUsr.UserNo}}" username="{{itemUsr.UserName}}">
<div class="item-content">
<div class="item-inner">
<div class="item-title">
<span style="color:#c6c4c4">{{itemUsr.UserNo}}</span>  {{itemUsr.UserName}}
</div>
</div>
</div>
</li>
</ul>
</div>
</div>
</div>

<div ng-transclude></div>
</div>

DepartUser.html

3.在车辆申请页面的使用

<!--
/************************************************************************/
/*
* 创建人：向高
* 创建日期：2016-04-01
* 文件描述：车辆申请表单页面
*/
/************************************************************************/
-->
<div ng-controller="CarApply">

<header class="bar bar-nav">
<a class="button button-link button-nav pull-left" ui-sref="Index">
<span class="icon icon-left"></span>
返回
</a>
<h1 class='title'>用车申请</h1>
</header>
<departpopup selects="selects" users="users" pop="pop" peng="peng1">

<div class="content" style="top:0.9rem">

<div class="list-block">
<ng-form name="CarForm" novalidate>
<!--ng-submit="save(CarForm.$valid)"-->
<ul>
<!-- Text inputs -->
<li>
<div class="item-content">
<div class="item-media"><i class="icon icon-form-name"></i></div>
<div class="item-inner">
<div class="item-title label inputSize">用车事由</div>
<div class="item-input">
<textarea required name="AskReason" ng-model='Apply.AskReason' style="font-size:14px;" placeholder="请输入(必填)"></textarea>
<!--<input type="text">-->
</div>
</div>
</div>
</li>
<li>
<div class="item-content">
<div class="item-media"><i class="icon icon-form-email"></i></div>
<div class="item-inner">
<div class="item-title label inputSize">始发地点</div>
<div class="item-input">
<input type="text" required  name="LevelPlace" ng-model="Apply.LevelPlace" style="font-size:14px;" placeholder="请输入（必填）">
</div>
</div>
</div>
</li>
<li>
<div class="item-content">
<div class="item-media"><i class="icon icon-form-gender"></i></div>
<div class="item-inner">
<div class="item-title label inputSize">返回地点</div>
<div class="item-input">
<input type="text" required name="EndPlace" ng-model="Apply.EndPlace" style="font-size:14px;" placeholder="请输入（必填）">
</div>
</div>
</div>
</li>
<li>
<div class="item-content">
<div class="item-media"><i class="icon icon-form-gender"></i></div>
<div class="item-inner">
<div class="item-title label inputSize">用车时间</div>
<div class="item-input">
<input type="text" name="LeaveTimeFrom" required ng-model="Apply.LeaveTimeFrom" id="datetime-pickerStart" style="font-size:14px;" placeholder="请输入（必填）">
</div>
</div>
</div>
</li>

<li>
<div class="item-content">
<div class="item-media"><i class="icon icon-form-gender"></i></div>
<div class="item-inner">
<div class="item-title label inputSize">返程时间</div>
<div class="item-input">
<input type="text" name="LeaveTimeTo" required ng-model="Apply.LeaveTimeTo" id="datetime-pickerEnd" style="font-size:14px;" placeholder="请输入（必填）">
</div>
</div>
</div>
</li>

<li ng-repeat="cars in cars" on-finish-render-filters>
<div class="item-content" style="top:0.7rem;padding-left:20px;background:#f3f2f2;line-height:55px;font-size:14px;height:40px">
<div style="width:85px;float:left"> <span>车辆明细({{$index+1}})</span></div>
<div style="width:70px;float:right;padding-right:15px;" ng-if="$index+1>1"><span><a href="javascript:void(0)" ng-click="deleteCar()">删除</a></span></div>
</div>
<!--<div class="content-block-title xingcheng" style="margin-left:30px;font-size:small">车辆明细({{$index+1}})</div>-->
<div class="item-content">
<div class="item-media"><i class="icon icon-form-gender"></i></div>
<div class="item-inner">
<div class="item-title label inputSize">车辆选择</div>
<div class="item-input">
<input type="text" class='picker' required name="BusInfo" ng-model="cars.BusInfo" style="font-size:14px;" placeholder="请选择（必选）">
</div>
</div>
</div>

<div class="item-content">
<div class="item-media"><i class="icon icon-form-gender"></i></div>
<div class="item-inner">
<div class="item-title label inputSize">数量</div>
<div class="item-input">
<input type="text" ng-change="getCarNum()" required name="AskNum" ng-model="cars.AskNum" required style="font-size:14px;" placeholder="请输入（必填）">
</div>
</div>
</div>
<div class="item-content">
<div class="item-media"><i class="icon icon-form-gender"></i></div>
<div class="item-inner">
<div class="item-title label inputSize">其他要求</div>
<div class="item-input">
<input type="text" name="Remark" ng-model="cars.Remark" style="font-size:14px;" placeholder="请输入">
</div>
</div>
</div>
</li>

<li><div class="content-block-title xingcheng" style="margin-left:30px;font-size:small">如需多种车型,请点击“添加车辆”</div></li>
<li style="text-align:center;"><a style="cursor:pointer" ng-click="AddMore()"><i class="fa fa-plus" style="color:blue"></i>添加车辆</a></li>
<li><div class="item-title label inputSize" style="margin-left:30px;">总数量（辆）：{{carnum}}</div></li>
<li>
<div class="item-content">
<div class="item-media"><i class="icon icon-form-gender"></i></div>
<div class="item-inner">
<div class="item-title label inputSize">备注</div>
<div class="item-input">
<textarea  name="Remark" ng-model='Apply.Remark' style="font-size:14px;" placeholder="请输入"></textarea>

</div>
</div>
</div>
</li>

<li style="padding-left:30px; height:110px;">
<div><span>审批人</span><span style="font-size:small;color:#999999">（点击头像可删除）</span></div>
<userselect selects="selects" users="users"></userselect>
</li>
</ul>
</ng-form>
</div>
<div class="content-block">
<div class="row">
<div class="col-50"><a href="#" class="button button-big button-fill button-danger">取消</a></div>
<div class="col-50"><a ng-class="{true:'button button-big button-fill button-success',false:'button button-big button-fill button-success disabled'}[CarForm.$valid]" ng-click="save(CarForm.$valid)" >提交</a></div>
<!--<a ng-class="{true:'button button-big button-fill button-success',false:'button button-big button-fill button-success disabled'}[CarForm.$valid]"  ng-click="save(CarForm.$valid)" class="button button-big button-fill button-success">提交</a>-->
</div>
</div>
</div>
</departpopup>
</div>

CarApply.html

4.车辆申请页面的Controller

//var CarApplyModule = angular.module("CarApplyModule", ['ngAnimate']);

/************************************************************************/
/*
* 创建人：向高
* 创建日期：2016-04-01
* 文件描述：车辆申请控制器
*/
/************************************************************************/

var CarApplyModule = angular.module("ktfOA");
CarApplyModule.controller("CarApply", function ($scope, $http, CalcService, $state, $stateParams) {

var selectCars = []; //保存根据用车时间 获取可选车辆
$scope.cars = [{ BusInfo: "", AskNum: 1, Remark: "" }]; //用于初始化repeater
$scope.carnum = parseInt($scope.cars[0].AskNum);
$scope.users = "";//审核人
$scope.selects = []; //选人控件 传回来的选择用户集合
//$scope.selectCars = []; //保存根据用车时间 获取可选车辆
$scope.Apply = {
AskReason: "", LevelPlace: "", EndPlace: "",
LeaveTimeFrom: "", LeaveTimeTo: "", Remark: "",
Detail: $scope.cars, users: ""

};

$scope.getCarNum = function () {
var num = 0;
for (var i = 0; i < $scope.cars.length; i++) {

if ($scope.cars[i].AskNum != undefined) {
num += parseInt($scope.cars[i].AskNum);
}
}
$scope.carnum = num;
}

//提交表单数据
$scope.save = function () {
if ($scope.selects.length <= 0)
{
$.alert("请选择审核人！");
return;
}
//获取审核人
var users = "";
for (var i = 0; i < $scope.selects.length; i++) {
users += $scope.selects[i].UserNo + ",";
}

$scope.Apply.users = users;
$http({ method: 'POST', url: '/phone/CarApply/SaveCarApply', data: JSON.stringify($scope.Apply) }).
success(function (response) {
if (response.status == 2) {

$.alert(response.msg);
}
else if (response.status == 1) {
$.alert(response.msg, function () { $state.go("AuditHome"); });
}
});
}

//添加车辆
$scope.AddMore = function () {
$scope.cars.push({ BusInfo: "", AskNum: "", Remark: "" });
}

//删除车
$scope.deleteCar = function () {
var index = this.$index;
$scope.cars.splice(index,1);
}

//选取用车时间时 获取车辆信息
$scope.GetCars = function () {

if ($scope.Apply.LeaveTimeFrom != "") {
$http({ method: 'POST', url: '/phone/CarApply/GetCars', data: { Stime: $scope.Apply.LeaveTimeFrom } }).success(function (data) {

//var selects = [];
if (selectCars.length > 0) {
selectCars.splice(0, selectCars.length);
}
for (var i = 0; i < data.length; i++) {
selectCars.push(data[i].BusName + data[i].BusType + "(" + data[i].BusSiteCount + "座)" + "  可用数量" + data[i].CarNum);
}

$(".picker").picker("setValue", selectCars);

})
}
}

$scope.$on('ngRepeatFinished', function (ngRepeatFinishedEvent) {

//初始化sui的选择器控件
$(".picker").picker({
toolbarTemplate: '<header class="bar bar-nav">\<button class="button button-link pull-left">按钮</button>\<button class="button button-link pull-right close-picker">确定</button>\<h1 class="title">车辆信息</h1>\</header>',
cols: [
{
textAlign: 'center',
values: selectCars
//values: ['奥迪A6L（5座）', '丰田商务车（7座）', '丰田卡罗拉（5座）', '大众帕萨特（5座）', '宇通大巴（47座）', '宇通中巴（24座）', 'iPad 2', 'iPad Retina', 'iPad Air', 'iPad mini', 'iPad mini 2', 'iPad mini 3']
}
]

});

});

$scope.$on('ngPageFinished', function (ngPageFinishedEvent) {
$("#datetime-pickerStart").datetimePicker({
onClose: function () {
$scope.GetCars();
}
});
$("#datetime-pickerEnd").datetimePicker({});
})

$scope.getNum = function () {
var num = 0;
for (var i = 0; i < $scope.cars.length; i++) {
num += $scope.cars[i].AskNum;
}
return num;
}

})

CarApplyModule.directive('onFinishRenderFilters', function ($timeout) {
return {
restrict: 'A', //匹配模式：A(属性方式)E（元素）M（注释  <!-- directive:xx -->）C(class方式 class = xx)，angular 默认使用A
link: function (scope, element, attr) {
if (scope.$last === true) {
$timeout(function () {
scope.$emit('ngRepeatFinished');
});
}
}
};
});

CarApplyController

简单的使用方式：
<departpopup selects="selects" users="users" pop="pop" peng="peng1">
<userselect selects="selects" users="users"></userselect>
</departpopup>
注意两个指令是嵌套的关系。selects和users等就是外部controller和指令之间的绑定，用于传递数据。
以上就是我的第一个angularjs指令。下边谈谈遇到的坑：
首先我只用一个指令来搞定，但是不行，因为sui必须将弹出框放在body元素里边，不能放在li元素，否则就弹不出来。我想到这是样式的问题，于是手动来更改sui弹出框的定位样式，但是这不是一个好办法，电脑上还可以，但是手机上会出现兼容问题。最后我想到可以用两个指令来写这个插件，外层的<departpopup>负责弹出框（放在body标签里边），内部的<userselect>用于显示最终的结果。这会有涉及两个指令之间的数据传递，和相互调用。
大概就这些，我也是刚开始学习，路过的请不惜赐教。感谢！