el-form中的rules未生效的解决方法

<el-dialog :visible.sync="dialogVisible" :show-close="false" :title="isEdit?'修改支付商品':'新增支付商品'" width="600px" top="8vh">
  <el-form ref="ruleForm" :rules="rules" :model="ruleForm" status-icon label-width="120px" class="demo-ruleForm">
    <el-form-item class="payment_item" label="产品名称：" prop="paymentProductName">
      <el-input v-model="ruleForm.paymentProductName" size="mini" style="width:350px" placeholder="请输入产品名称"/>
    </el-form-item>
    <el-form-item class="payment_item" label="产品类型：" prop="paymentProductType">
      <el-select v-model="ruleForm.paymentProductType" size="mini" placeholder="请选择" style="width:350px">
        <el-option label="小程序开通" value="1"/>
        <el-option label="核验币" value="0"/>
      </el-select>
    </el-form-item>
    <el-form-item class="payment_item" label="产品描述：">
      <el-input
        :rows="2"
        v-model="ruleForm.remark"
        style="width:350px"
        type="textarea"
        placeholder="请输入内容"/>
    </el-form-item>
    <el-form-item class="payment_item" label="价格：" prop="paymentProductPrice">
      <el-input-number
        :precision="2"
        :controls="false"
        v-model="ruleForm.paymentProductPrice"
        :min="0.01"
        size="mini"
        style="width:350px"/>
    </el-form-item>
    <el-form-item class="payment_item" label="数量：" prop="paymentProductNum">
      <el-input-number
        :precision="0"
        :controls="false"
        v-model="ruleForm.paymentProductNum"
        :min="1"
        size="mini"
        style="width:350px"/>
    </el-form-item>
    <el-form-item class="payment_item" label="优惠：" prop="paymentProductGiveNum">
      <el-input-number
        :precision="0"
        :controls="false"
        v-model="ruleForm.paymentProductGiveNum"
        size="mini"
        style="width:350px"/>
    </el-form-item>
    <el-form-item class="payment_item" label="首充：" prop="isFirstPunch">
      <el-radio v-model="ruleForm.isFirstPunch" :label="true">是</el-radio>
      <el-radio v-model="ruleForm.isFirstPunch" :label="false">否</el-radio>
    </el-form-item>
    <el-form-item v-if="ruleForm.isFirstPunch" class="payment_item" label="首充描述标题：" prop="firstPunchTitle">
      <el-input v-model="ruleForm.firstPunchTitle" size="mini" style="width:350px" placeholder="请输入首充描述标题" maxlength="15"/>
    </el-form-item>
    <el-form-item v-if="ruleForm.isFirstPunch" class="payment_item" label="副标题：" prop="firstPunchSubTitle">
      <el-input v-model="ruleForm.firstPunchSubTitle" size="mini" style="width:350px" placeholder="请输入副标题" maxlength="30"/>
    </el-form-item>
    <el-form-item class="payment_item" label="配置渠道：" prop="rechargeChannel">
      <el-select v-model="ruleForm.rechargeChannel" size="mini" placeholder="请选择" style="width:350px">
        <el-option label="非IOS" value="0"/>
        <el-option label="IOS" value="1"/>
      </el-select>
    </el-form-item>
    <el-form-item class="payment_item" label="排序权重：" prop="sort">
      <el-input-number :precision="0" :controls="false" v-model="ruleForm.sort" size="mini" style="width:350px"/>
    </el-form-item>
  </el-form>
  <div slot="footer" style="text-align: center">
    <el-button @click="dialogVisible = false">取 消</el-button>
    <el-button
      type="primary"
      @click="submitHandler('ruleForm')">确 定
    </el-button>
  </div>
</el-dialog>

data() {
    return {
      rules: {
        paymentProductName: [
          { required: true, message: '请输入产品名称', trigger: 'blur' }
        ],
        paymentProductType: [
          { required: true, message: '请选择产品类型', trigger: 'change' }
        ],
        paymentProductPrice: [
          { required: true, message: '请输入产品价格', trigger: 'blur' }
        ],
        paymentProductNum: [
          { required: true, message: '请输入产品数量' },
          { type: 'number', message: '产品数量必须为数字' }
        ],
        paymentProductGiveNum: [
          { required: true },
          { type: 'number' }
        ],
        isFirstPunch: [
          { required: true, message: '请选择是否是首充', trigger: 'change' }
        ],
        firstPunchTitle: [
          { required: true, message: '请输入首充描述标题', trigger: 'blur' }
        ],
        firstPunchSubTitle: [
          { required: true, message: '请输入副标题', trigger: 'blur' }
        ],
        rechargeChannel: [
          { required: true, message: '请选择配置渠道', trigger: 'change' }
        ],
        sort: [
          { required: true, message: '请输入排序权重' },
          { type: 'number', message: '排序权重必须为数字' }
        ]
      }
    }
  },