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psv

v4.1.3

Published

porco schema validate

Downloads

100

Readme

Porco Schema Validate (psv)

(自2.1.7版本之后,数组的定义改变,支持数组嵌套)

psv 是一款轻量级 js 数据格式验证工具,相比于其他功能齐备的验证工具,psv 的优势在于体积非常小(之所以要写它,就是因为对其他 validate 框架不满意,我只是想要一个格式化验证工具,却给我一个 1M 的项目),最开始的核心代码只有 130 行。

下载、安装

npm install psv --save
yarn add psv

使用

首先你需要定义出自己的 schema,比如:

var schema = {
    str: {
        type: String,             // string 类型
        required: true,           // 是否必填,默认为 false
        max: 3,                   // 最大长度
        min: 2,                   // 最小长度
        enum: ['12', '13', '14'], // 枚举
        regex: '^[8-9]*$',        // 正则
        // 正则(兼容老版本,不推荐使用,优先级低,当它与 regex 同时出现时会被忽略)
        pattern: '^[5-9]*$',
        error: {                  // 自定义错误提示
            type: '类型错误',
            required: '必填错误',
            max: '不能超过最大长度',
            min: '不能低于最小长度',
            enum: 'enum 必须正确',
            regex: '正则验证错误',
            pattern: '正则验证错误',
        }      
    },
    num: {
        type: Number,
        required: true,
        max: 3,           // 最大长度
        min: 1,           // 最小长度
        enum: [1, 2, 3],  // 枚举
        error: {          // 自定义错误提示
            type: '类型错误',
            required: '必填错误',
            max: '不能超过最大值',
            min: '不能低于最小值',
            enum: 'enum 必须正确',
        },
    },
    boo: {
        type: Boolean, 
        required: true,
        error: {          // 自定义错误提示
            type: '类型错误',
            required: '必填错误',
        },
    },
    arr: {
    	type: Array, 
        required: true,
        max: 3,          // 最大长度
        min: 2,          // 最大长度
        error: {          // 自定义错误提示
            type: '类型错误',
            required: '必填错误',
            max: '不能超过最大长度',
            min: '不能低于最小长度',
        },
    },
    obj: {
    	type: Object, 
        required: true,
        error: {          // 自定义错误提示
            type: '类型错误',
            required: '必填错误',
        },
    }
};

schema 是预先定义的数据格式,接下来将会拿 data 与 schema 进行比对, 对于一个 schema 来说只有 type 字段是必填的,其他都可以缺省。

var data = {
    str: '12',
    num: 2,
    boo: true,
    array: [1, 2],
    obj: {},
}

接着我们导入并创建 Psv 对象进行验证

import Psv from 'psv';
function testPsv(schema, data) {
	const psv = new Psv(schema, data);
	const validate = psv.validate();
	if (!validate) {
		psv.printErrors();
	}
}

api

  • 数据类型

    • String
      • type
      • default // 默认值
      • trim // 去除数据两边空格,默认 false
      • required
      • max
      • min
      • enum
      • regex
      • pattern
      • error (自定义错误提示,可使用默认值)
        • type (type 错误提示信息)
        • required (required 错误提示信息)
        • max (max 错误提示信息)
        • min (min 错误提示信息)
        • enum (enum 错误提示信息)
        • regex (regex 错误提示信息)
        • pattern (pattern 错误提示信息)
    • Number
      • type
      • default
      • required
      • max
      • min
      • enum
      • error
        • type
        • required
        • max
        • min
        • enum
    • Array
      • type
      • default
      • required
      • max
      • min
      • error
        • type
        • required
        • max
        • min
    • Boolean
      • type
      • default
      • required
      • error
        • type
        • required
    • Object
      • type
      • default
      • required
      • error
        • type
        • required
  • 函数

    • validate // 验证入口
    • printErrors // 打印错误信息
    • getErrors // 获取错误信息

注意:当 type = Object 时,说明该字段可以是任何 js 基本类型或对象,甚至可以是 一个 函数(慎用)。

4.1.0 之后,全面支持 default 默认值,default 可以是任何值,String 添加 trim 去空格支持。default 以及 trim 都支持无限嵌套

const schema = {
    key1: {
        type: String,
        default: '123',
    }
};
const data = {};
const psv = new Psv(schema, data);
const res = psv.validate();
// data.key1 === '123'
const schema = {
    key1: {
        type: String,
        trim: true,
    }
};
const data = {
	key1: '  123'
};
const psv = new Psv(schema, data);
const res = psv.validate();
// data.key1 === '123'

同样,psv 支持嵌套定义

const schema2 = {
    str2: {
        type: String,
        required: true
    }
}
const schema = {
    str1: {
        type: schema2,
        required: true
    },
};

(如果对使用有疑问,可以参考 test 目录下代码)