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源码搜藏网。