第5篇:ui-router路由带参数跳转后controller执行两次的问题处理

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最近用到了ui-router做项目:

跳转路由:

<a ui-sref="createOffer" class="third-item">Create Offer</a>
路由配置:
.state('createOffer', {      url: "/offerManager/create/{id}",      templateUrl: "./view/appOffer/offer/create/createOffer.html",      controller:"createOfferCtrl"})
路由跳转:

$state.go("createOffer",{id:getId});

但是当点击跳转时会发现页面对应的子controller执行了两次:


网上查的大部分都是因为controller在html中多写了一次的原因,但是这里的controller并没有第二次配置,几经折腾在github上找到了解决办法:

Let's say you have a state with an optional parameter :.state('app.numbers', {  url: '/numbers{timestamp:.*}',  templateUrl: 'numbers/templates/app.numbers.html',  controller: 'NumberListCtrl'})if you just use a link like this, the controller NumberListCtrl will be loaded twice, once with a timestamp parameter with an undefined value, and once with a '' value :<a ui-sref=".numbers">numbers</a>

也就是说路由跳转了两次,一次是带参数执行的,另一次是为不带参数执行,当然上面也给了解决办法:

To prevent your controller from being loaded twice, you can use the following methods :<a ui-sref=".numbers({timestamp:''})">numbers</a>or use $state in js :$state.go('app.numbers', {timestamp: ''});or add these lines at the top of your controller :// prevent double controller load because of the optional parameterif (typeof $stateParams.timestamp === 'undefined') {   return;}

于是将路由改成这样:

<a ui-sref="createOffer({id : ''})" class="third-item">Create Offer</a>
再次跳转对应的controller就不会执行两次了。

参考:https://github.com/angular-ui/ui-router/issues/1476

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