VueJS:v-for不渲染

时间:2018-08-14 16:29:30

标签: laravel vue.js v-for

我正在尝试vueJS(+ laravel),但遇到了问题。

我用v-for创建了OrdersComponent.vue(对于我从API中检索到的每个订单),但是什么也没发生

OrderComponent.vue:(h1正在渲染,console.log(this.orders)正在运行)

   <template>
    <div>
        <h1> Commandes </h1>
        <div class="card card-body" v-for="order in orders" v-bind:key="order.idCommande">
            <h2> {{ order.date }} </h2>
            <span> {{ order.statut }} </span>
        </div>
    </div>
</template>

<script>
import Vue from 'vue'
export default Vue.extend({
    data() {
        return {
            orders: [],
            order: {
                idCommande: '',
                date: '',
                prix: '', 
                statut: '',
            },
            orderId: '',
            edit: false
        }
    },

    methods: {
        fetchOrders() {
            fetch('api/orders')
                .then(res => res.json())
                .then(res => {
                    this.orders = res.data;
                    console.log(this.orders);
                })
        }
    },

    created() {
        this.fetchOrders();
    }
})
</script>

调用该组件的页面(orders.blade.php):

@extends('layouts.app')

@section('content')
    <orders></orders>
@endsection

最后是layouts.app文件:

<!DOCTYPE html>
<html lang="{{ str_replace('_', '-', app()->getLocale()) }}">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- CSRF Token -->
    <meta name="csrf-token" content="{{ csrf_token() }}">

    <title>{{ config('app.name', 'Laravel') }}</title>

    <!-- Scripts -->
    <script src="{{ asset('js/app.js') }}" defer></script>

    <!-- Fonts -->
    <link rel="dns-prefetch" href="https://fonts.gstatic.com">
    <link href="https://fonts.googleapis.com/css?family=Nunito" rel="stylesheet" type="text/css">

    <!-- Styles -->
    <link href="{{ asset('css/app.css') }}" rel="stylesheet">
</head>
<body>
    <div id="app">
            <nav class="navbar navbar-expand-md navbar-light navbar-laravel">
                    <div class="container">
                        <a class="navbar-brand" href="{{ url('./') }}">
                           MyOnlineCV
                        </a>
                        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="{{ __('Toggle navigation') }}">
                            <span class="navbar-toggler-icon"></span>
                        </button>

                        <div class="collapse navbar-collapse" id="navbarSupportedContent">
                            <!-- Left Side Of Navbar -->
                            <ul class="navbar-nav mr-auto">

                            </ul>

                            <!-- Right Side Of Navbar -->
                            <ul class="navbar-nav ml-auto">
                                <!-- Authentication Links -->
                                @guest
                                    <li class="nav-item">
                                        <a class="nav-link" href="{{ route('login') }}">{{ __('Login') }}</a>
                                    </li>
                                    <li class="nav-item">
                                        <a class="nav-link" href="{{ route('register') }}">{{ __('Register') }}</a>
                                    </li>
                                @else
                                    <li class="nav-item dropdown">
                                        <a id="navbarDropdown" class="nav-link dropdown-toggle" href="#" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" v-pre>
                                            {{ Auth::user()->username .' '. Auth::user()->email }} <span class="caret"></span>
                                        </a>

                                        <div class="dropdown-menu dropdown-menu-right" aria-labelledby="navbarDropdown">
                                            <a class="dropdown-item" href="{{ route('commandes') }}"> Mes commandes </a>

                                            <a class="dropdown-item" href="{{ route('logout') }}"
                                               onclick="event.preventDefault();
                                                             document.getElementById('logout-form').submit();">
                                                {{ __('Logout') }}
                                            </a>

                                            <form id="logout-form" action="{{ url('/logout') }}" method="GET" style="display: none;">
                                                @csrf
                                            </form>
                                        </div>
                                    </li>
                                @endguest
                            </ul>
                        </div>
                    </div>
                </nav>

        <main class="py-4">
            <div id="app">
                <div class="container">
                    @yield('content')
                </div>
            </div>
        </main>
    </div>

<script src="{{ asset('js/app.js') }}"></script>
</body>
</html>

3 个答案:

答案 0 :(得分:0)

尝试将其从组件的data()方法中删除:

        ...
        order: {
            idCommande: '',
            date: '',
            prix: '', 
            statut: '',
        },
        orderId: '',
        ...

您在v-for部分声明“订单”:

v-for="order in orders"

答案 1 :(得分:0)

可能是您忘记进行更改后重新编译应用程序了吗

从data()删除订单对象

 order:{
  idCommande: '',
        date: '',
        prix: '', 
        statut: '',
 }

并使用以下命令重新编译应用程序:

npm run dev

此外: 当我们要使用表单提交一些数据时,我们会创建此类对象。

例如

对于注册/注册,我们获得用户名,电子邮件地址,年龄等,并通过调用模板中的每个值(例如user.name)将其保存到如下所示的对象中

user:{
   name:'',
   email:'',
   age: '',
}

然后我们仅通过axios或将获取的用户对象发送到服务器。

答案 2 :(得分:0)

也许您已经修复了它,但是在我的情况下,我在methods中使用了箭头功能,但这种方式无法正常工作。我不得不将其更改为“普通”函数声明,如下所示:

methods: {
    fetchOrders: function() {
        fetch('api/orders').then(res => res.json())
        .then(res => {
            this.orders = res.data;
            console.log(this.orders);
        });
    }
},