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sd-defender

v1.0.1

Published

a validator for params

Downloads

4

Readme

sd-defender

sd-defender 是一个参数校验器

安装:

npm install sd-defender

它的输入是:

  • 一个参数对象(在 express 中通常是 req.queryreq.body
  • 一个校验规则对象,其中包含了参数名称和对应校验规则的描述关系

它的输出是:校验结果(一个数组,数组里存放校验不通过的参数信息;如所有参数都校验通过,则为空数组)

例如:

const V = require('sd-defender')

let params = {
  name: 'jarone',
  age: '18'
}

let schema = {
  mobile: 'required|numeric',
  name : 'max:10|min:1',
  age : 'numeric'
}

let invalidMsg = V(params, schema)

console.log(invalidMsg);

/*
[
  {
    paramName: 'mobile',
    value: undefined,
    invalid: '必须传递mobile'
  }
]
*/

sd-defender 输出的校验结果中默认展示中文,如需展示英文,则需要在调用时传递第 3 个参数,值为 en

const V = require('sd-defender')

let params = {
  name: 'jarone',
  age: '18'
}

let schema = {
  mobile: 'required|numeric',
  name : 'max:10|min:1',
  age : 'numeric'
}

let invalidMsg = V(params, schema, 'en')

console.log(invalidMsg);

/*
[
  {
    paramName: 'mobile',
    value: undefined,
    invalid: 'mobile is required.'
  }
]
*/

sd-defender 默认情况下只返回第一个不合格参数的校验结果

如需返回所有不合格参数的校验结果,需要在调用时传递第 4 个参数,值为 true

const V = require('sd-defender')

let params = {
  name: 'jarone',
  age: '18'
}

let schema = {
  mobile: 'required|numeric',
  name : 'max:5|min:1',
  age : 'numeric'
}

let invalidMsg = V(params, schema, 'en', true)

console.log(invalidMsg);

/*
[
  {
    paramName: 'mobile',
    value: undefined,
    invalid: 'mobile is required.'
  },
  {
    paramName: 'name',
    value: 'jarone',
    invalid: 'name can not gt 5. jarone given.'
  }
]
*/

sd-defender 支持扩展自定义校验规则

如需添加自定义校验规则,请在调用时传递第 5 和 第 6 个参数:

const V = require('sd-defender')

let params = {name: 'luy'}

let schema = {name: 'isJarone'}

let extRules = {isJarone: (val) => val === 'jarone'}

let extInvalidMsg = {
  isJarone: (paramName, val) => `${paramName} is not jarone, ${val} given.`
}

let invalidMsg = V(params, schema, 'en', true, extRules, extInvalidMsg)

console.log(invalidMsg);

/*
[
  {
    paramName: 'name',
    value: 'luy',
    invalid: 'name is not jarone, luy given.'
  }
]
*/

sd-defender 默认提供了如下校验规则:

  1. required 要求参数必传,如参数未传递,或值为: undefinednullNaN、空字符串、空数组、空对象,则判定为校验失败
  2. requiredWithOut 允许传入一组参数名单,如参数名单中的任何一项不存在时(是否存在的判定规则参考 required ),则当前参数必传
  3. bool 要求参数值为布尔类型
  4. numeric 要求参数值为数字类型,允许整型和浮点型
  5. array 要求参数值为数组类型
  6. max 要求参数值或参数值的长度的上限;如参数值是数字类型,则判定其值;如参数值是数组或字符串类型,则判定其长度(也就是 length);闭合区间(包含设置值)
  7. min 要求参数值或参数值的长度的下限;如参数值是数字类型,则判定其值;如参数值是数组或字符串类型,则判定其长度(也就是 length);闭合区间(包含设置值)
  8. dateGt 要求日期类型参数值的下限(不包含下限值)
  9. dateLt 要求日期类型参数值的上限(不包含上限值)
  10. dateGte 要求日期类型参数值的下限(包含下限值)
  11. dateLte 要求日期类型参数值的上限(包含上限值)

sd-defender 校验规则语法:

sd-defender 参考了 Laravel 的校验语法,使用 | 分割不同的校验规则,例如:

{
  name: 'required|min:5|max:10'
}