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check-depends

v0.9.0

Published

Check object depends

Downloads

7

Readme

check-depends

数据对象检查、验证,灵感来自于 MongoDB 查询语法。

用法

const checkDepends = require('check-depends');

const data = {
  name: 'CheckDepends',
  license: 'MIT',
  author: 'Liang',
  tags: ['web', 'app'],
  numbers: [0, 15, 20],
  empty: [],
  obj: {},
  object: { attr: 1, foo: 'bar' },
  regexp: '/check/',
  from: 2016,
  awesome: true,
  bugs: 0,
  zero: 0,
  one: 1,
  no: false,
  null: null,
  undefined: undefined
};

checkDepends('name', data); // true
checkDepends('!name', data); // false
checkDepends('null', data); // false
checkDepends({ name: 'CheckDepends' }, data); // true
checkDepends({ 'name.length': 6 }, data); // true
checkDepends({ name: ':regexp' }, data); // true
checkDepends({ from: { $gt: 2015 } }, data); // true
checkDepends({ tags: /web/ }, data); // true
checkDepends({ obj: {} }, data); // true
checkDepends({ object: { attr: 1, foo: 'bar' } }, data); // true
checkDepends({ 'object.foo': 'bar' }, data); // true
checkDepends({ numbers: { $all: [15, 20] } }, data); // true
checkDepends({ 'tags.length': 2 }, data); // true
checkDepends({ $or: [{ name: '/check/i' }, { no: true }] }, data); // true
checkDepends({ $jsonSchema: {} }); //true
checkDepends({ $jsonSchema: { properties: { name: { type: 'number' } } } }); //false

已支持的MongoDB查询操作:

和MongoDB的差异

  • check-depends 中可以用字符串表示正则
  • MongoDB支持JSON Schema draft 4,check-depends 使用AJV验证JSON Schema
  • check-depends 中:开头的字符串 :key,代表data值引用
  • check-depends 支持 string.length 和 array.length 查询
  • check-depends 中ObjectID和24位字符串相等

差异举例:

| Exp | MongoDB | check-depends | | ----------------------------------- | ------------------------------- | ------------------ | | "/abc/i" | string | RegExp | | $jsonSchema: {name:{type:'number'}} | Error(' Unknown keyword: name') | true |

和纯JS的差异

为了尽可能贴近MongoDB,0.8版本进行了重构,主要在两个方面:

  • 不同类型间进行大小对比始终返回false,比如 0 < true 在JS中为真,在MongoDB和check-depends中为假
  • undefined被视作null