<template slot-scope="scope"> <el-form-item :prop="'list.' + scope.$index + '.controlok'" :rules="fromDataRules.controlok" > <el-input v-if="scope.row.controluse === 'S2F21'" :disabled=" scope.row.iscontrol === false || scope.row.iscontrol == null || scope.row.iscontrol == '' " v-model="scope.row.controlok" filterable clearable /> <el-select v-else v-model="scope.row.controlok" :disabled=" scope.row.iscontrol === false || scope.row.iscontrol == null || scope.row.iscontrol == '' " :placeholder="t('web_ems_tip_pleaseInput')" filterable clearable > <el-option v-for="item in identifyingList" :key="item.id" :label="item" :value="item" /> </el-select> </el-form-item> </template>表单验证fromDataRules.controlok自定义若该行的iscontrol的值是true并且controlok的值为空时，提示请输入。代码怎么写

你可以在 `fromDataRules` 中添加一个自定义规则来实现该功能，代码如下：

fromDataRules: {
  controlok: [
    { 
      required: true, 
      message: '请输入', 
      trigger: 'blur',
      validator: (rule, value, callback) => {
        let index = rule.field.split('.')[1];
        let row = this.list[index];
        if (row.iscontrol === true && (value === undefined || value.trim() === '')) {
          callback(new Error('请输入'));
        } else {
          callback();
        }
      }
    }
  ]
}

在该规则中，我们定义了一个自定义验证函数 `validator`，它会在输入框失去焦点时被调用。该函数会根据当前行的 `iscontrol` 值和 `controlok` 的值来判断是否需要进行验证。如果需要验证且 `controlok` 值为空，则会调用 `callback(new Error('请输入'))` 来提示用户输入。否则，调用 `callback()` 来表示验证通过。

在模板中，我们需要绑定 `fromDataRules.controlok` 规则，在 `el-form-item` 组件中添加 `prop` 属性，并将其值设为 `'list.' + scope.$index + '.controlok'`，这样该规则就会应用到该行的 `controlok` 属性上。

<template slot-scope="scope">
  <el-form-item
    :prop="'list.' + scope.$index + '.controlok'"
    :rules="fromDataRules.controlok">
    <el-input
      v-if="scope.row.controluse === 'S2F21'"
      :disabled="scope.row.iscontrol === false || scope.row.iscontrol == null || scope.row.iscontrol == ''"
      v-model="scope.row.controlok"
      filterable
      clearable />
    <el-select
      v-else
      v-model="scope.row.controlok"
      :disabled="scope.row.iscontrol === false || scope.row.iscontrol == null || scope.row.iscontrol == ''"
      :placeholder="t('web_ems_tip_pleaseInput')"
      filterable
      clearable>
      <el-option
        v-for="item in identifyingList"
        :key="item.id"
        :label="item"
        :value="item" />
    </el-select>
  </el-form-item>
</template>