<el-dialog
        :title="title"
        :visible.sync="visable"
        width="40%"
        :before-close="cancel">
      <el-form label-width="80px" :model="formData" :rules="formDataRules" ref="formData" >
        <el-form-item label="Id" prop="id" v-if="formData.id">
          {{formData.id}}
        </el-form-item>

        // begin ---------------------
        <div v-for="(item, index) in formData.test" :key="index">
          <el-form-item label="test1" :prop="`test[${index}].test1`" :rules="{ required: true, message: '请输入test1', trigger: 'blur' }">
            <el-input type="text" v-model="item.test1"></el-input>
          </el-form-item>
          <el-form-item label="test2" :prop="`test[${index}].test2`" :rules="{ required: true, message: '请输入test2', trigger: 'blur' }">
            <el-input type="text" v-model="item.test2"></el-input>
          </el-form-item>
        </div>
　　　　　　　　　// end ---------------------

      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="cancel">取 消</el-button>
        <el-button type="primary" @click="save('formData')">确 定</el-button>
      </div>
    </el-dialog>

save(formName: string) {
      const el: any = this.$refs[formName] ;
      el.validate((valid: any) => {
        if (valid) {
          // todo 校验成功
        } else {
          return false;
        }
      });
    }