表单校验可能出现问题记录

日常开发小问题随笔记录，方便后续遇到查阅。

表单数据绑定输入值与校验输入绑定的值不一致

问题出现场景：vue form 表单绑定的对象，对应item 绑定的值与自定义校验对象值不一致导致：

<template>
  <el-form :model="formLabel" :rules="formRules" label-width="80px">
    <el-form-item label="部门" prop="department">
      <el-input v-model="formLabel.department"></el-input>
    </el-form-item>
    <el-form-item label="活动区域" prop="areat">
      <el-input v-model="formLabelAlign.activeareat"></el-input>
    </el-form-item>
    <el-form-item label="活动形式" prop="ruleType">
      <el-input v-model="formLabelAlign.activeType"></el-input>
    </el-form-item>
  </el-form>
</template>
<script setup>
import { reactive, ref } from 'vue';

const formRules = reactive({
  department: [{ required: true, message: '请输入部门', trigger: 'blur' }],
  areat: [{ required: true, message: '请输入活动区域', trigger: 'blur' }],
  ruleType: [{ required: true, message: '请输入活动形式', trigger: 'blur' }],
});
const formLabel = ref({
  department: '',
  activeareat: '',
  activeType: '',
});
</script>
<style lang="less"></style>

将formRules 对象里面对应的key修改与formLabel 对象的key一致就行；

<template>
  <el-form :model="formLabel" :rules="formRules" label-width="80px">
    <el-form-item label="部门" prop="department">
      <el-input v-model="formLabel.department"></el-input>
    </el-form-item>
    <el-form-item label="活动区域" prop="activeareat">
      <el-input v-model="formLabelAlign.activeareat"></el-input>
    </el-form-item>
    <el-form-item label="活动形式" prop="activeType">
      <el-input v-model="formLabelAlign.activeType"></el-input>
    </el-form-item>
  </el-form>
</template>
<script setup>
import { reactive, ref } from 'vue';

const formRules = reactive({
  department: [{ required: true, message: '请输入部门', trigger: 'blur' }],
  activeareat: [{ required: true, message: '请输入活动区域', trigger: 'blur' }],
  activeType: [{ required: true, message: '请输入活动形式', trigger: 'blur' }],
});
const formLabel = ref({
  department: '',
  activeareat: '',
  activeType: '',
});
</script>
<style lang="less"></style>

表单绑定对象初始没有对应绑定的值

问题出现场景： vue 项目主子组件绑定的form对象为父组件传入的对象; 子组件没有同步到父组件对应的对象值导致的；
父组件：

<template>
  <div>
    <Childern :project-opt="formLabel"></Childern>
  </div>
</template>
<script>
export default {
  data() {
    return {
      formLabel:{}
    };
  },
  created() {
    this.formLabel = {
      department: '',
        activeareat: '',
        activeType: '',
    }
  }
};
</script>
<style lang="less"></style>

子组件：

<template>
  <el-form :model="formLabel" :rules="formRules" label-width="80px">
    <el-form-item label="部门" prop="department">
      <el-input v-model="formLabels.department"></el-input>
    </el-form-item>
    <el-form-item label="活动区域" prop="activeareat">
      <el-input v-model="formLabelAlign.activeareat"></el-input>
    </el-form-item>
    <el-form-item label="活动形式" prop="activeType">
      <el-input v-model="formLabelAlign.activeType"></el-input>
    </el-form-item>
  </el-form>
</template>
<script>
export default {
  props: {
    formLabel: {
      type: Object,
    },
  },
  data() {
    return {
      formLabels: this.formLabel,
      formRules: {
        department: [{ required: true, message: '请输入部门', trigger: 'blur' }],
        activeareat: [{ required: true, message: '请输入活动区域', trigger: 'blur' }],
        activeType: [{ required: true, message: '请输入活动形式', trigger: 'blur' }],
      },
    };
  },
};
</script>
<style lang="less"></style>

由于vue2 中监听不到对象属性值变化导致子组件没有收到 formLabel 对象属性；将 父组件给 formLabel 赋值改为：

	this.$set(this.formLabel, 'department', '')
    this.$set(this.formLabel, 'activeareat', '')
    this.$set(this.formLabel, 'activeType', '')

问题解决