在每个this。$ router.push()调用上重新加载导航栏组件

时间:2019-03-31 20:27:57

标签: vue.js vuejs2 vue-component vue-router

我在Vue.js应用程序中开发了一个登录/注册系统。我希望在致电this.$router.push('/')时更新导航栏中的项目。

App.vue:

<template>
  <div id="app">
    <Navbar></Navbar>
    <router-view></router-view>
    <Footer></Footer>
  </div>
</template>

导航栏组件:

export default {
    name: "Navbar",
    data: function() {
        return {
            isLoggedIn: false,
            currentUser: null
        }
    },
    methods: {
        getAuthInfo: function() {
            this.isLoggedIn = this.auth.isLoggedIn();
            if (this.isLoggedIn) {
                this.currentUser = this.auth.currentUser();
            }
        }
    },
    mounted: function() {
        this.getAuthInfo();
    },
    updated: function() {
        this.getAuthInfo();
    }
}

这是我重定向到另一页的方法:

const self = this;
this.axios
    .post('/login', formData)
    .then(function(data) {
        self.auth.saveToken(data.data.token);
        self.$router.push('/');
    })
    .catch(function(error) {
        console.log(error);
        self.errorMessage = 'Error!';
    });

摘要::问题是,当我调用isLoggedIn时,Navbar中的currentUserself.$router.push('/');没有得到更新。这意味着不会调用函数mountedupdated。只有在我手动刷新页面后,它们才会更新。

2 个答案:

答案 0 :(得分:1)

检查from the docs

beforeRouteUpdate (to, from, next) {
  // called when the route that renders this component has changed,
  // but this component is reused in the new route.
  // For example, for a route with dynamic params `/foo/:id`, when we
  // navigate between `/foo/1` and `/foo/2`, the same `Foo` component instance
  // will be reused, and this hook will be called when that happens.
  // has access to `this` component instance.
},

我希望您的Navbar组件可在路线之间重用,因此不会调用其mountedupdated。如果要对路由更改进行一些处理,请尝试使用beforeRouteUpdate

答案 1 :(得分:0)

我通过向Navbar组件添加:key="$route.fullPath"解决了这个问题:

<template>
  <div id="app">
    <Navbar :key="$route.fullPath"></Navbar>
    <router-view></router-view>
    <Footer></Footer>
  </div>
</template>