我正在用Rails 6 Api作为后端构建我的第一个Vue-Cli 3项目。
我有一个导航组件,该组件应该在用户成功登录后进行更新,现在当用户登录时,它会重定向到用户仪表板,但导航保持为已记录的导航视图。当我强制刷新页面时,它将成功更改。
对Vue如此陌生可能是一个小问题,但是我正在努力寻找与此问题有关的任何参考。
我正在使用Axios Axios-Vue和JWTSessions处理令牌/会话
这是我的Navigation.vue组件代码:
<template>
<div class="font-sans antialiased">
<nav class="flex items-center justify-between flex-wrap bg-loadze-blue p-6 fixed w-full">
<div class="flex items-center flex-no-shrink text-gray-900 mr-6">
<span class="font-semibold text-xl tracking-tight text-white">Loadze.co</span>
</div>
<div class="block sm:hidden">
<button @click="toggle" class="flex items-center px-3 py-2 border rounded text-teal-lighter border-teal-light hover:text-white hover:border-white">
<svg class="fill-current h-3 w-3" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg"><title>Menu</title><path d="M0 3h20v2H0V3zm0 6h20v2H0V9zm0 6h20v2H0v-2z"/></svg>
</button>
</div>
<div :class="open ? 'block': 'hidden'" class="w-full flex-grow sm:flex sm:items-center sm:w-auto">
<div class="text-sm sm:flex-grow">
<router-link to="/home" class="no-underline block mt-4 sm:inline-block sm:mt-0 text-teal-lighter hover:text-white mr-4" v-if="!signedIn()">Home</router-link>
<router-link to="/about" class="no-underline block mt-4 sm:inline-block sm:mt-0 text-teal-lighter hover:text-white mr-4" v-if="!signedIn()">About</router-link>
<router-link to="/features" class="no-underline block mt-4 sm:inline-block sm:mt-0 text-teal-lighter hover:text-white mr-4" v-if="!signedIn()">Features</router-link>
<router-link to="/pricing" class="no-underline block mt-4 sm:inline-block sm:mt-0 text-teal-lighter hover:text-white mr-4" v-if="!signedIn()">Pricing</router-link>
<router-link to="/contact" class="no-underline block mt-4 sm:inline-block sm:mt-0 text-teal-lighter hover:text-white mr-4" v-if="!signedIn()">Contact Us</router-link>
</div>
<div>
<router-link to="/signup" class="text-sm no-underline block mt-4 sm:inline-block sm:mt-0 text-teal-lighter hover:text-white mr-4" v-if="!signedIn()">Sign up</router-link>
<router-link to="/signin" class="text-sm no-underline block mt-4 sm:inline-block sm:mt-0 text-teal-lighter hover:text-white mr-4" v-if="!signedIn()">Sign in</router-link>
<a href="#" @click.prevent="signOut" class="text-sm no-underline block mt-4 sm:inline-block sm:mt-0 text-teal-lighter hover:text-white mr-4" v-if="signedIn()">Logout</a>
</div>
</div>
</nav>
</div>
</template>
<script>
export default {
name: 'Navigation',
data () {
return {
open: false
}
},
methods: {
toggle () {
this.open = !this.open
},
setError (error, text) {
this.error = (error.response && error.response.data && error.response.data.error) || text
},
signedIn () {
return localStorage.signedIn
},
signOut () {
this.$http.secured.delete('/signin')
.then(response => {
delete localStorage.csrf
delete localStorage.signedIn
this.$router.replace('/')
})
.catch(error => this.setError(error, 'Can not sign out'))
}
}
}
</script>
<style>
</style>
这是Signin.vue组件(脚本的表单代码很长。如果需要查看,请告诉我)代码:
<script>
export default {
name: 'Signin',
data () {
return {
email: '',
password: '',
error: ''
}
},
created () {
this.checkSignedIn()
},
updated () {
this.checkSignedIn()
},
methods: {
signin () {
this.$http.plain.post('/signin', { email: this.email, password: this.password })
.then(response => this.signinSuccessful(response))
.catch(error => this.signinFailed(error))
},
signinSuccessful (response) {
if (!response.data.csrf) {
this.signinFailed(response)
return
}
localStorage.scrf = response.data.csrf
localStorage.signedIn = true
this.error = ''
this.$router.replace('/dashboard')
},
signinFailed (error) {
this.error = (error.response && error.response.data && error.response.data.error) || ''
delete localStorage.csrf
delete localStorage.signedIn
},
checkSignedIn () {
if (localStorage.signedIn) {
this.$router.replace('/dashboard')
}
}
}
}
</script>
答案 0 :(得分:2)
您正在使用一个函数进行条件显示(v-if="!signedIn()"
),但该函数未返回任何内容,这意味着模板中没有任何反应性渲染。
尝试添加可以在登录时更新的新数据属性:
<template>
...
<div class="text-sm sm:flex-grow">
<router-link to="/home" v-if="!isSignedIn">Home</router-link>
<router-link to="/about" v-if="!isSignedIn">About</router-link>
<router-link to="/features" v-if="!isSignedIn">Features</router-link>
<router-link to="/pricing" v-if="!isSignedIn">Pricing</router-link>
<router-link to="/contact" v-if="!isSignedIn">Contact Us</router-link>
</div>
...
</template>
<script>
export default {
name: 'Signin',
data () {
return {
email: '',
password: '',
error: '',
isSignedIn: false // <= here
}
},
//...
methods: {
signin () {
this.$http.plain.post('/signin', { email: this.email, password: this.password })
.then(response => {
this.signinSuccessful(response)
this.isSignedIn = true // <= and here
}).catch(error => this.signinFailed(error))
},
//...
}
}
</script>
然后在注销功能中,可以将isSignedIn
设置为false。
答案 1 :(得分:1)
要使您的localStorage对象具有反应性,它必须是组件数据或计算属性的一部分。 最简单的解决方案是将身份验证状态存储在vuex中,然后使用vuex mapGetter将其提供给您的组件。然后,当用户登录时,您可以通过vuex操作更新状态。 如果您不熟悉vuex,则可以在其网站上找到一个足以满足此要求的示例。