alx*_*lxb 2 javascript vue.js axios vuejs2
我想this.request(url)从 mixin 中调用 axios (以简化和集中有关 axios 的所有内容在同一个文件中),但它不起作用。
Vue 文件:
export default {
name: "employees-list",
data() {
return {
employees: []
}
},
mounted() {
this.employees = this.request('https://jsonplaceholder.typicode.com/posts');
}
}
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请求.js
Vue.mixin({
methods: {
request: function (url) {
axios.get(url)
.then(response => {
return response.data
})
.catch(e => {
this.errors.push(e)
})
}
}
});
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员工是“未定义的”。
我认为问题是异步或等待,但我不明白。
看起来您希望 mixin 创建一个用于检索数据的通用方法。在这种情况下,您需要从方法返回承诺request并在成功回调中处理结果数据。
这是一个工作示例。
console.clear()
const EmployeesList = {
name: "employees-list",
template: `
<ul>
<li v-for="employee in employees">{{employee.title}}</li>
</ul>
`,
data() {
return {
employees: []
}
},
mounted() {
// obviously using posts here as an example instead of
// employees.
this.request('https://jsonplaceholder.typicode.com/posts')
// handle the promise success
.then(e => this.employees = e);
}
}
Vue.mixin({
methods: {
request: function(url) {
// return the promise
return axios.get(url)
.then(response => {
return response.data
})
.catch(e => {
this.errors.push(e)
})
}
}
});
new Vue({
el: "#app",
components: {
EmployeesList
}
})Run Code Online (Sandbox Code Playgroud)
<script src="https://cdnjs.cloudflare.com/ajax/libs/axios/0.17.1/axios.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.5.13/vue.js"></script>
<div id="app">
<employees-list></employees-list>
</div>Run Code Online (Sandbox Code Playgroud)
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