我正在尝试使用vue-async-data在呈现我的Vue组件之前异步获取数据,但我没有成功。我没有得到任何错误,但它根本不起作用。
这是我的 main.js 代码:
import Vue from 'vue'
import VueAsyncData from 'vue-async-data'
import router from './router'
import App from './App.vue'
Vue.use(VueAsyncData)
new Vue({
el: '#app',
router,
template: '<App/>',
components: { App }
})
这是我的 App.vue 代码:
<template>
<div>
{{ msg }}
<navigation wait-for="async-data"></navigation>
</div>
</template>
<script>
import Navigation from './components/Navigation.vue'
export default {
name: 'app',
components: {
Navigation
},
data: function() {
return {
msg: 'not loaded yet...'
}
},
asyncData: function (resolve, reject) {
// load data and call resolve(data)
// or call reject(reason) if something goes wrong
setTimeout(function () {
// this will call `vm.$set('msg', 'hi')` for you
resolve({
msg: 'hi'
})
}, 1000)
}
}
</script>
msg 值在任何时候都不会更改,但仍会呈现该组件。
我错过了somenthing吗?
答案 0 :(得分:2)
正如Bert Evans所说,vue-async-data不适用于Vue 2.0。
我使用了vue-router和创建的函数来实现我所需要的(如https://router.vuejs.org/en/advanced/data-fetching.html中所述。
<template>
<div>
<div class="loading" v-if="loading">
Loading...
</div>
<div v-if="error" class="error">
{{ error }}
</div>
<navigation v-if="currentUser"></navigation>
</div>
</template>
<script>
import Navigation from './components/Navigation.vue'
export default {
name: 'app',
components: {
Navigation
},
data: function() {
return {
loading: true,
error: false,
currentUser: null
}
},
created: function() {
this.fetchUserData()
},
methods: {
fetchUserData: function() {
this.$http.get('/Account/CurrentUserInfo').then(data => {
this.currentUser = data
this.loading = false
}, response => {
this.loading = false
this.error = true
});
}
}
}
</script>