vue---element实现动态渲染form表单数据,动态添加数据
element
A Vue.js 2.0 UI Toolkit for Web
项目地址:https://gitcode.com/gh_mirrors/eleme/element
免费下载资源
·
效果展示:
功能描述:
-
1.动态渲染form数据:动态从后台获取form数据,表单的label不固定,label和label对应的值均从后台获取,动态渲染label和label对应的值。
Object.keys()
方法会返回一个由一个给定对象的自身可枚举属性组成的数组,数组中属性名的排列顺序和正常循环遍历该对象时返回的顺序一致 。具体说明见Object.keys()
- 2.动态删除属性:可删除属性(此处id和name属性不能删除,所以输入框后不出现删除按钮)。
- 3.动态添加属性和值:可添加属性和值,key即对应label,value为label对应的值。
完整代码如下:
<template>
<!-- 动态从后台获取数据渲染form表单,表单的label不固定,label和label对应的值均从后台获取 -->
<!-- 为了展示效果,省略了向后台发送请求获取数据部分,直接给数据赋值 -->
<!-- 功能:1.动态渲染form数据、2.动态添加属性和值,3.动态删除属性 -->
<div>
<el-button type="primary" size="mini" @click="edit">编辑数据</el-button>
<el-dialog
class="formDialog"
title="编辑数据"
:visible.sync="dialogVisible"
width="600px"
@close="closeDialog"
>
<el-form ref="form" :model="form" size="mini" label-width="100px">
<!-- 1. 动态渲染form数据-->
<el-form-item v-for="keyItem in Object.keys(form)" :key="keyItem">
<span slot="label">{{keyItem}}</span>
<el-input v-model="form[keyItem]" v-bind:disabled="keyItem=='id'"></el-input>
<!-- 2.动态删除属性 -->
<el-button
class="delete-btn"
v-show="keyItem!=='id' && keyItem!='name'"
size="mini"
icon="el-icon-delete"
type="danger"
plain
@click="removeKey(keyItem)"
></el-button>
</el-form-item>
</el-form>
<!-- 3.动态添加属性和值-->
<div v-for="(item,index) in attrList" :key="index" class="add-row">
<span class="label-span">key</span>
<el-input v-model="item.attrKey" size="mini" />
<span class="label-span">value</span>
<el-input v-model="item.attrValue" size="mini" />
<el-button
class="delete-btn"
v-if="attrList.length >= 1"
size="mini"
icon="el-icon-delete"
type="danger"
plain
@click="removeRow(index)"
></el-button>
</div>
<div class="footer-btn">
<el-button type="warning" size="mini" @click="addRow">新增属性</el-button>
<el-button type="danger" @click="dialogVisible = false" size="mini">取 消</el-button>
<el-button type="success" size="mini" @click="submitForm">确 定</el-button>
</div>
</el-dialog>
</div>
</template>
<script>
export default {
data() {
return {
attrList: [
{
attrKey: "",
attrValue: ""
}
],
// 对话框相关属性
dialogVisible: false,
form: {}
};
},
methods: {
//打开编辑数据对话框
edit() {
this.attrList = [];
this.dialogVisible = true;
// axios从后台获取this.form数据,这里模拟仅直接赋值
this.form = {
id: 1,
name: "maidu_xbd",
hobby: "dance",
job: "IT"
};
},
//关闭对话框
closeDialog() {
this.form = {};
},
// 增加行
addRow() {
var attrLength = this.attrList.length;
if (attrLength != 0) {
if (
(this.attrList[attrLength - 1].attrKey == "") |
(this.attrList[attrLength - 1].attrValue == "")
) {
this.$message.warning("请填写上一属性完整后再新增");
} else {
this.pushData();
}
} else {
this.pushData();
}
},
pushData() {
this.$nextTick(() => {
this.attrList.push({
attrKey: "",
attrValue: ""
});
});
this.$forceUpdate(); //强制刷新,解决页面不会重新渲染的问题
},
// 删除已有属性
removeKey(label) {
console.log(label);
this.$confirm("此操作将永该, 是否继续?", "提示", {
confirmButtonText: "确定",
cancelButtonText: "取消",
type: "warning"
})
.then(() => {
const loading = this.$loading({
lock: true,
text: "正在删除,请稍等",
spinner: "el-icon-loading",
background: "rgba(0, 0, 0, 0.6)"
});
// 下面写向后台发送删除属性请求,请求后重新向后台查询form数据
// 此处不写请求,用setTimeout模拟效果
setTimeout(() => {
loading.close();
this.$message.success("删除成功");
}, 2000);
})
.catch(() => {
// this.$message({
// type: "info",
// message: "已取消删除"
// });
});
},
// 删除行
removeRow(index) {
this.attrList.splice(index, 1);
},
// 提交更新节点或边
submitForm() {
if (this.attrList.length != 0) {
// ==========1.添加新的属性则先处理数据,再向后台发送请求
// 首先判断input输入框是否填写完整
if (
this.attrList[this.attrList.length - 1].attrKey != "" &&
this.attrList[this.attrList.length - 1].attrValue != ""
) {
for (var i = 0; i < this.attrList.length; i++) {
let key = this.attrList[i]["attrKey"];
let value = this.attrList[i]["attrValue"];
this.form[key] = value;
}
// 模拟发送请求
this.requestUpdate();
} else {
this.$message.warning("请填写完整后提交");
}
} else {
// ======2.没有添加新的属性则直接向后台发送请求
// 模拟发送请求
this.requestUpdate();
}
},
// 模拟发送请求
requestUpdate() {
this.$message.success("信息更新成功");
this.dialogVisible = false;
}
}
};
</script>
<style lang="less">
// 对话框样式
.formDialog {
.el-dialog__header {
font-weight: 600;
border-bottom: 1px solid #d5dada;
}
.el-dialog__body {
padding: 20px;
margin-right: 30px;
}
.el-form-item__content {
display: flex;
}
// 动态添加属性和值
.add-row {
padding-bottom: 10px;
display: flex;
flex-direction: row;
align-items: center;
justify-content: space-evenly;
.label-span {
width: 160px;
padding-right: 15px;
padding-left: 15px;
&:first-child {
width: 270px;
text-align: right;
}
}
}
.delete-btn {
height: 28px;
margin-left: 10px;
}
.el-icon-delete {
display: block;
padding-top: 0px;
}
.footer-btn {
margin-top: 10px;
text-align: right;
}
}
</style>
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A Vue.js 2.0 UI Toolkit for Web
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