rules: {
  bannerType: [ { required: true, message: '请选择类型', trigger: 'change'} ],
  associateId: [ { required: true, message: '请选择公告', trigger: 'change'} ],
  associateData: [ { required: true, type: 'url', message: '输入合法的链接', trigger: 'change' } ]
}

rules: {
  rewardReason: [
    { required: true, message: '请输入加分原因', trigger: 'blur' },
    { max: 500, message: '不得超过500字符' }
  ]
}

<el-input v-model.number="form.rewardToLevel" style="display: inline;" placeholder="请输入等级数字" type="number"></el-input>
 
rules: {
  rewardReason: [
    { required: true, message: '请输入加分原因', trigger: 'blur' },
    { max: 500, message: '不得超过500字符' }
  ]
}