Vue实现增删改查功能
简单的表单CURD功能demo
<!DOCTYPE html><html>
<head>
<meta charset="UTF-8">
<title></title>
<link rel="stylesheet" href="css/vueCurd420.css" />
<style>
/*
*/
#grid-template,
#dialog-template {
display: none;
}
</style>
</head>
<body>
<div id="app">
<div class="container">
<div class="form-group">
<label>Search</label>
<input type="text" class="search-input" v-model="searchQuery" />
</div>
</div>
<div class="container">
<simple-grid :data-list="people" :columns="columns" :search-key="searchQuery">
</simple-grid>
</div>
</div>
<template id="grid-template">
<table>
<thead>
<tr>
<th v-for="col in columns">
{{ col.name | capitalize}}
</th>
<th>
Delete
</th>
</tr>
</thead>
<tbody>
<tr v-for="(index,entry) in dataList | filterBy searchKey">
<td v-for="col in columns">
<span v-if="col.isKey"><a href="javascript:void(0)" @click="openEditItemDialog(entry[col.name])">{{entry[col.name]}}</a></span>
<span v-else>{{entry[col.name]}}</span>
</td>
<td class="text-center">
<button class="btn-danger" @click="deleteItem(entry)">delete</button>
</td>
</tr>
</tbody>
</table>
<div class="container">
<button class="btn" @click="openNewItemDialog('Create New Item')">Create</button>
</div>
<modal-dialog :mode="mode" :title="title" :item="item" :fields="columns" v-on:create-item="createItem" v-on:update-item="updateItem">
</modal-dialog>
</template>
<template id="dialog-template">
<div class="dialogs">
<div class="dialog" v-bind:class="{ 'dialog-active': show }">
<div class="dialog-content">
<header class="dialog-header">
<h1 class="dialog-title">{{ title }}</h1>
</header>
<div class="dialog-body">
<div v-for="field in fields" class="form-group">
<label>{{ field.name }}</label>
<select v-if="field.dataSource" v-model="item[field.name]" :disabled="mode === 2 && field.isKey">
<option v-for="opt in field.dataSource" :value="opt">{{ opt }}</option>
</select>
<input v-else type="text" v-model="item[field.name]" :disabled="mode === 2 && field.isKey">
</div>
</div>
<footer class="dialog-footer">
<div class="form-group">
<label></label>
<button class="btn-save" v-on:click="save">Save</button>
<button class="btn-close" v-on:click="close">Close</button>
</div>
</footer>
</div>
</div>
<div class="dialog-overlay"></div>
</div>
</template>
<script src="js/vue.js"></script>
<script>
Vue.component('simple-grid', {
template: '#grid-template',
props: ['dataList', 'columns', 'searchKey'],
data: function() {
return {
mode: 0,
title: '',
keyColumn: '',
item: {}
}
},
ready: function() {
for(var i = 0; i < this.columns.length; i++) {
if(this.columns[i].isKey) {
this.keyColumn = this.columns[i]['name']
break;
}
}
},
methods: {
openNewItemDialog: function(title) {
// 对话框的标题
this.title = title
// mode = 1表示新建模式
this.mode = 1
// 初始化this.item
this.item = {}
// 广播事件,showDialog是modal-dialog组件的一个方法,传入参数true表示显示对话框
this.$broadcast('showDialog', true)
},
openEditItemDialog: function(key) {
// 根据主键查找当前修改的数据
var currentItem = this.findItemByKey(key)
// 对话框的标题
this.title = 'Edit Item - ' + key
// mode = 2表示修改模式
this.mode = 2
// 将选中的数据拷贝到this.item
this.item = this.initItemForUpdate(currentItem)
// 广播事件,传入参数true表示显示对话框
this.$broadcast('showDialog', true)
},
// 弹出修改数据的对话框时,使用对象的深拷贝
initItemForUpdate(p, c) {
c = c || {};
for(var i in p) {
// 属性i是否为p对象的自有属性
if(p.hasOwnProperty(i)) {
// 属性i是否为复杂类型
if(typeof p[i] === 'object') {
// 如果p[i]是数组,则创建一个新数组
// 如果p[i]是普通对象,则创建一个新对象
c[i] = Array.isArray(p[i]) ? [] : {};
// 递归拷贝复杂类型的属性
this.initItemForUpdate(p[i], c[i]);
} else {
// 属性是基础类型时,直接拷贝
c[i] = p[i];
}
}
}
return c;
},
findItemByKey: function(key) {
var keyColumn = this.keyColumn
for(var i = 0; i < this.dataList.length; i++) {
if(this.dataList[i][keyColumn] === key) {
return this.dataList[i]
}
}
},
itemExists: function() {
var keyColumn = this.keyColumn
for(var i = 0; i < this.dataList.length; i++) {
if(this.item[keyColumn] === this.dataList[i][keyColumn])
return true;
}
return false;
},
createItem: function() {
var keyColumn = this.keyColumn
if(!this.itemExists()) {
// 将item追加到dataList
this.dataList.push(this.item)
// 广播事件,传入参数false表示隐藏对话框
this.$broadcast('showDialog', false)
// 新建完数据后,重置item对象
this.item = {}
} else {
alert(keyColumn + ' "' + this.item[keyColumn] + '" is already exists')
}
},
updateItem: function() {
// 获取主键列
var keyColumn = this.keyColumn
for(var i = 0; i < this.dataList.length; i++) {
// 根据主键查找要修改的数据,然后将this.item数据更新到this.dataList[i]
if(this.dataList[i][keyColumn] === this.item[keyColumn]) {
for(var j in this.item) {
this.dataList[i][j] = this.item[j]
}
break;
}
}
// 广播事件,传入参数false表示隐藏对话框
this.$broadcast('showDialog', false)
// 修改完数据后,重置item对象
this.item = {}
},
deleteItem: function(entry) {
var data = this.dataList
data.forEach(function(item, i) {
if(item === entry) {
data.splice(i, 1)
return
}
})
}
},
components: {
'modal-dialog': {
template: '#dialog-template',
data: function() {
return {
// 对话框默认是不显示的
show: false
}
},
/*
* mode = 1是新增数据模式,mode = 2是修改数据模式
* title表示对话框的标题内容
* fields表示对话框要显示的数据字段数组
* item是由simple-dialog传下来,用于绑定表单字段的
*/
props: ['mode', 'title', 'fields', 'item'],
methods: {
close: function() {
this.show = false
},
save: function() {
if(this.mode === 1) {
// 使用$dispatch调用simple-grid的create-item事件
this.$dispatch('create-item')
} else if(this.mode === 2) {
// 使用$dispatch调用simple-grid的update-item事件
this.$dispatch('update-item')
}
}
},
events: {
'showDialog': function(show) {
this.show = show
}
}
}
}
})
var demo = new Vue({
el: '#app',
data: {
searchQuery: '',
columns: [{
name: 'name',
isKey: true
}, {
name: 'age'
}, {
name: 'sex',
dataSource: ['Male', 'Female']
}],
people: [{
name: 'Jack',
age: 30,
sex: 'Male'
}, {
name: 'Bill',
age: 26,
sex: 'Male'
}, {
name: 'Tracy',
age: 22,
sex: 'Female'
}, {
name: 'Chris',
age: 36,
sex: 'Male'
}]
}
})
</script>
</body>
</html>
参考https://keepfool.github.io/vue-tutorials/02.Components/Part-2/demo/step05.html
以上是 Vue实现增删改查功能 的全部内容, 来源链接: utcz.com/z/380127.html