Vue动态生成数据字段的实例
目录
动态生成数据字段实例
1.父组件定义data里面的数据字段
2.子组件接收数据
3.因为获取数据是异步操作
4.计算属性计算两个变量是否均完成
5.子组件完整代码
表单动态生成字段
动态生成数据字段实例 1.父组件定义data里面的数据字段异步请求获取数据(一种配置数据，一种实际数据)
data () {
return {
config: [],
list: []
};
}
2.子组件接收数据
props: {
config: Array,
list: Array
},
data () {
return {
newConfig: [],
configLength: 0,
newList: []
};
}
3.因为获取数据是异步操作
因此需要监听数据变化，当有数据时展示子组件
configLoaded: false,
listLoaded: false
定义上面两个变量来判断数据是否加载完成，在异步获取完数据后赋值为true，并监听
watch: {
configLoaded (n, o) {
this.configLoaded = n;
},
listLoaded (n, o) {
this.listLoaded = n;
}
},
4.计算属性计算两个变量是否均完成
并执行v-if
computed: {
showItem () {
return this.configLoaded && this.listLoaded;
}
},
<list-item :config="config" :list="list" v-if="showItem"></list-item>
5.子组件完整代码
<template>
<div>
<div class="item iconfont border-bottom" v-for="(item,index) of newList" :key="index">
<p v-for="(m,i) of item" :key="i">{{m.name}} {{m.text}}</p>
</div>
</div>
</template>
<script>
export default {
name: 'Item',
props: {
config: Array,
list: Array
},
data () {
return {
newConfig: [],
configLength: 0,
newList: []
};
},
mounted () {
this.toConfig();
},
methods: {
toConfig () {
this.configLength = this.config.length;
for (let i in this.config) {
let configItem = this.config[i];
this.newConfig.push({name: configItem.fieldName, text: configItem.fieldDesc});
}
for (let l in this.list) {
let item = this.list[l];
let childList = [];
for (var c in this.newConfig) {
let config = this.newConfig[c];
for (let key in item) {
if (config.name === key) {
childList.push({name: config.text, text: item[key]});
}
}
}
this.newList.push(childList);
}
}
}
};
</script>
<style lang="stylus" ref="stylesheet/stylus">
</style>
表单动态生成字段
checkbox 多选，没有默认值的时候，一定要给一个空数组，不然就展示不出来
<el-form ref="myForm" :model="form" :rules="rules" :disabled="disabledBoolean">
<el-row>
<el-col>
<div v-for="(item ,index) in extendFieldColumns" :key="index" >
<el-col v-if="item.type === 'input'" :span="defaultSpan">
<el-form-item :label-width="defaultLabelWidth" size="small" :rules="extendFieldRules[item.prop]" :prop="'extendField.'+item.prop" :label="item.label+':'" >
<el-input v-model="form.extendField[item.prop]" :maxlength="item.maxlength" placeholder="请输入内容"></el-input>
</el-form-item>
</el-col>
<el-col v-if="item.type === 'radio'" :span="defaultSpan">
<el-form-item :label-width="defaultLabelWidth" size="small" :rules="extendFieldRules[item.prop]" :prop="'extendField.'+item.prop" :label="item.label+':'" >
<el-radio-group v-model="form.extendField[item.prop]" >
<el-radio v-for="(option,index1) in item.dicData" :key="index1" :label="option.label" >{{option.label}}</el-radio>
</el-radio-group>
</el-form-item>
</el-col>
<el-col v-if="item.type === 'select'" :span="defaultSpan" >
<el-form-item :label-width="defaultLabelWidth" size="small" :prop="'extendField.'+item.prop" :label="item.label+':'" :rules="extendFieldRules[item.prop]">
<el-select v-model="form.extendField[item.prop]" placeholder="请选择">
<el-option
v-for="(option,index2) in item.dicData"
:key="index2"
:label="option.label"
:value="option.label">
</el-option>
</el-select>
</el-form-item>
</el-col>
<el-col v-if="item.type === 'checkbox'" :span="defaultSpan" >
<el-form-item :label-width="defaultLabelWidth" size="small" :prop="'extendField.'+item.prop" :label="item.label+':'" :rules="extendFieldRules[item.prop]">
<el-checkbox-group v-model="form.extendField[item.prop]" >
<el-checkbox v-for="city in item.dicData" :label="city.label" :key="city.label">{{city.label}}</el-checkbox>
</el-checkbox-group>
</el-form-item>
</el-col>
<el-col v-if="item.type === 'number'" :span="defaultSpan" >
<el-form-item :label-width="defaultLabelWidth" size="small" :prop="'extendField.'+item.prop" :label="item.label+':'" :rules="extendFieldRules[item.prop]">
<el-input-number v-model="form.extendField[item.prop]" :max="item.maxlength" ></el-input-number>
</el-form-item>
</el-col>
<el-col v-if="item.type === 'textarea'" :span="defaultSpan" >
<el-form-item :label-width="defaultLabelWidth" size="small" :prop="'extendField.'+item.prop" :label="item.label+':'" :rules="extendFieldRules[item.prop]">
<el-input
v-model="form.extendField[item.prop]"
:maxlength="item.maxlength"
type="textarea"
placeholder="请输入内容"
>
</el-input>
</el-form-item>
</el-col>
<el-col v-if="item.type === 'date'" :span="defaultSpan" >
<el-form-item :label-width="defaultLabelWidth" size="small" :prop="'extendField.'+item.prop" :label="item.label+':'" :rules="extendFieldRules[item.prop]">
<el-date-picker
v-model="form.extendField[item.prop]"
type="date"
placeholder="选择日期">
</el-date-picker>
</el-form-item>
</el-col>
</div>
</el-col>
</el-row>
</el-form>
以上为个人经验，希望能给大家一个参考，也希望大家多多支持软件开发网。
