我是vue.js的新手,我试图完成一些教程。 这三个小时以来一直在和我打架,我感到沮丧。仅供参考,我使用的是firebase,但我不确定它在这里真的很重要。
所以,我有一个CRUD应用程序列出电影(我告诉你这是基本的!)。 页面顶部有一个表单,您可以在其中添加电影,以及下面的表格,其中列出了新的注册表。这很有效。
我在表格的每一行添加了编辑和删除按钮。删除功能有效。但编辑功能是问题。
我想在初始表单上使用v-if,触发不同的方法(保存,编辑)并显示不同的按钮(添加,保存,取消)。
我不确定如何访问对象来执行此操作,我尝试了一些事情,而v-if表示对象未定义。
感谢您的阅读,请提出您需要的任何内容。
import './firebase' // this has my credententials and initializeApp
import Vue from 'vue'
import App from './App'
import VueFire from 'vuefire'
Vue.use(VueFire)
Vue.config.productionTip = false
/* eslint-disable no-new */
new Vue({
el: '#app',
template: '<App/>',
components: { App }
})
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<template>
<div id="app" class="container">
<div class="page-header">
<h1>Vue Movies</h1>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h3>Add Movie</h3>
</div>
<div class="panel-body">
<div v-if="!isEditing">
<form id="form" class="form-inline" v-on:submit.prevent="addMovie">
<div class="form-group">
<label for="movieTitle">Title:</label>
<input type="text" id="movieTitle" class="form-control" v-model="newMovie.title">
</div>
<div class="form-group">
<label for="movieDirector">Director:</label>
<input type="text" id="movieDirector" class="form-control" v-model="newMovie.director">
</div>
<div class="form-group">
<label for="movieUrl">URL:</label>
<input type="text" id="movieUrl" class="form-control" v-model="newMovie.url">
</div>
<input type="submit" class="btn btn-primary" value="Add Movie">
</form>
</div>
<div v-else>
<form id="form" class="form-inline" v-on:submit.prevent="saveEdit(movie)">
<div class="form-group">
<label for="movieTitle">Title:</label>
<input type="text" id="movieTitle" class="form-control" v-model="movie.title">
</div>
<div class="form-group">
<label for="movieDirector">Director:</label>
<input type="text" id="movieDirector" class="form-control" v-model="movie.director">
</div>
<div class="form-group">
<label for="movieUrl">URL:</label>
<input type="text" id="movieUrl" class="form-control" v-model="movie.url">
</div>
<input type="submit" class="btn btn-primary" value="Save">
<button v-on:click="cancelEdit(movie['.key'])">Cancel</button>
</form>
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading">
<h3>Movies List</h3>
</div>
<div class="panel-body">
<table class="table table-stripped">
<thead>
<tr>
<th>Title</th>
<th>director</th>
</tr>
</thead>
<tbody>
<tr v-for="movie in movies">
<td>
<a v-bind:href="movie.url" v-bind:key="movie['.key']" target="_blank">{{movie.title}}</a>
</td>
<td>
{{movie.director}}
</td>
<td>
<button v-on:click="editMovie(movie)">Edit</button>
</td>
<td>
<button v-on:click="removeMovie(movie)">Remove</button>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
</template>
<script>
import { moviesRef } from './firebase'
export default {
name: 'app',
firebase: {
movies: moviesRef
},
data () {
return {
isEditing: false, // maybe this helps?
newMovie: {
title: '',
director: '',
url: 'http://',
edit: false // or maybe this??
}
}
},
methods: {
addMovie: function() {
moviesRef.push( this.newMovie )
this.newMovie.title = '',
this.newMovie.director = '',
this.newMovie.url = 'http://'
this.newMovie.edit = false
},
editMovie: function (movie){
moviesRef.child(movie['.key']).update({ edit:true }); // can't access this one with v-if, not sure why
//this.newMovie = movie;
},
removeMovie: function (movie) {
moviesRef.child(movie['.key']).remove()
},
cancelEdit(key){
moviesRef.child(key).update({ edit:false })
},
saveEdit(movie){
const key = movie['key'];
moviesRef.child(key).set({
title : movie.title,
director : movie.director,
url : movie.url,
edit : movie.edit
})
}
}
}
</script>
<style>
#app {
font-family: 'Avenir', Helvetica, Arial, sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
text-align: center;
color: #2c3e50;
margin-top: 60px;
}
</style>
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答案 0 :(得分:2)
点击isEditing
按钮后,您应该将Edit
更改为true,并且您应该定义数据movie
。
editMovie: function (movie){
...
this.movie = Vue.util.extend({}, movie); // deep clone to prevent modify the original object
this.isEditing = true;
},
答案 1 :(得分:0)
正如评论中所建议的(Ben),我将电影声明添加到初始数据对象中。所以现在它看起来像这样:
data () {
return {
isEditing: false,
newMovie: {
title: '',
director: '',
url: 'http://',
edit: false
},
movie: {
edit: false
}
}
},
现在v-if工作正常,如下:
<div v-if="!movie.edit">
“正在编辑”不再需要,所以我删除了它。