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47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
const { validate } = require('class-validator')
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const { plainToClass } = require('class-transformer')
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const data_from_array = ['body','query','params','cookie']
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/**
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*
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* @param {new ()=>void} dto
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* @param {'body'|'query'|'params'|'headers'|'cookie'} from
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* @returns {RequestHandler}
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*/
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module.exports = function (dtoFunc,from) {
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if(!data_from_array.includes(from)) {
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throw new Error('校验数据源无效')
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}
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return async function (req,res,next) {
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const dto = plainToClass(dtoFunc,req[from],{ enableImplicitConversion:true,excludeExtraneousValues:true })
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req[from] = dto
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try{
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var errors = await validate(dto)
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}catch(err) {
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console.error('数据校验过程中报错')
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res.status(500)
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res.error('内部错误',500)
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return
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}
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if(errors.length === 0) {
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console.log('数据校验通过')
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return next()
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}
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console.error('数据校验不通过',errors)
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const error = errors[0]
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const errorMsg = Object.entries(error.constraints)[0][1]
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res.error(errorMsg,400,{ is_validate:true,field:error.property,from })
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}
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} |