我在使用Polymer 2应用程序时遇到了问题,我首先通过它进行了路由,但是我发现在点击该页面后,当导航到该页面时Dom-if触发时,它并没有重新触发。
EG,
如果我在url / matters / 6719上,它将显示详细信息页面,但是如果我单击“后退”按钮并转到url / matter,则dom-if如果不再被点击,它仍然向我显示详细信息页面,< / p>
使用我的导航选择器时也会发生这种情况,该选择器的设置类似于PWA入门工具包。
<link rel="import" href="../bower_components/polymer/polymer-element.html">
<link rel="import" href="../bower_components/app-route/app-location.html">
<link rel="import" href="../bower_components/app-route/app-route.html">
<link rel="import" href="../bower_components/iron-pages/iron-pages.html">
<link rel="import" href="../bower_components/iron-selector/iron-selector.html">
<link rel="import" href="shared-styles.html">
<link rel="import" href="Matters/matter-list.html">
<link rel="import" href="MatParties/matparty-list.html">
<link rel="lazy-import" href="Matters/matter-detail.html">
<dom-module id="my-matters">
<template>
<style include="shared-styles">
:host {
display: block;
padding: 10px;
}
</style>
<app-route route="{{route}}" pattern="/:matter_id" data="{{routeData}}" tail="{{subroute}}">
<app-route route="{{subroute}}" pattern="/matparties/:this_page" data="{{pageData}}"></app-route>
</app-route>
<div class="card">
<template is="dom-if" if="[[_subidIsDefined(pageData.this_page)]]">
<matparty-list linkedmatpartyid="[[pageData.this_page]]"></matparty-list>
</template>
<template is="dom-if" if="[[!_subidIsDefined(pageData.this_page)]]">
<template is="dom-if" if="[[!_idIsDefined(routeData.matter_id)]]">
<matter-list></matter-list>
</template>
<template is="dom-if" if="[[_idIsDefined(routeData.matter_id)]]">
<matter-detail linkedmatterid="[[routeData.matter_id]]"></matter-detail>
</template>
</template>
</template>
<script>
class Matters extends Polymer.Element {
static get is() { return 'my-matters'; }
_subidIsDefined(subid) {
//There are probably ways to optimize this
if (subid) {
return true;
}
return false;
}
_idIsDefined(id) {
//There are probably ways to optimize this
if (id) {
return true;
}
return false;
}
}
window.customElements.define(Matters.is, Matters);
</script>
</dom-module>
答案 0 :(得分:0)
您检查过图案了吗?通常,该模式应遵循url模式。...在您的情况下为“ url / matters / 6719”
由于您已经在路由器上定义了pattern =“ / matparties /:this_page”,并且 matparties 在'url / matters / 6719'中是!='matters',可能会产生错误。我不知道您是否定义了一个基本URL,它也会在这方面产生一些问题。
因此,网址应为matparties / 6719以匹配模式并解析为dom-if