React|React Native post请求参数校验组件(Validator)

React Native post请求参数校验组件(Validator) 在平时开发表单页面时,经常需要各种参数的校验,校验通过发送表单请求,校验出错就Toast 错误信息,当一个表单有三五项时,我们做一些if else 判断还好,当表单项多达10来项,做判断会增加很多垃圾代码,而且可维护性也不高,这时我们可以封装一个表单参数校验组件Valudator来解决这繁琐的问题。
效果图 React|React Native post请求参数校验组件(Validator)
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image 核心源码 Validator校验器

// 登录表单校验 const loginValidator = () => ({ validator: { data: ValidateUtil([ { func: (params, state, payload) => Required(params.name), msg: '请输入用户名' }, { func: (params, state, payload) => Required(params.pwd), msg: '请输入密码' } ]) } })// 注册表单校验 const registerValidator = () => ({ validator: { data: ValidateUtil([ { func: (params, state, payload) => Required(params.name), msg: '请输入手机号' }, { func: (params, state, payload) => RegExpr.checkMobile(params.name), msg: '手机号格式不正确' }, { func: (params, state, payload) => Required(params.code), msg: '请输入验证码' }, { func: (params, state, payload) => Required(params.pwd), msg: '请输入密码' } ]) } })

Validator中间件
/** * Created by guangqiang on 2017/11/23. */ import {Toast, deepClone} from '../utils' export default validatorMiddleware = extraArgument => {return ({getState, dispatch}) => next => action => {// console.log('action:', action)let actionObj = action || {} let payloadObj = actionObj.payload let metaObj = action.meta || {} let validatorObj = metaObj.validator || {}if (!metaObj.validator) { return next(action) }let nextAction = undefined let nextPayload = undefinedtry { nextPayload = action.payload.nextPayload } catch (e) { return next(action) }if (nextPayload !== undefined) { nextAction = deepClone(action) nextAction.payload = nextPayload }if (metaObj && (typeof nextPayload.promise === 'function') && validatorObj) {if (Array.prototype.isPrototypeOf(validatorObj.data) && validatorObj.data.length > 0) {let paramsArr = validatorObj.data || [] let func = null let msg = '' let isPassed = true let params = payloadObj.params || {} for (let i = 0; i < paramsArr.length; i ++) {let item = paramsArr[i] func = item.func msg = item.msgif(typeof func === 'function') { if (typeof func(params, getState(), payloadObj) !== 'boolean') { throw new Error('validator func must return boolean type') } else { if (!func(params, getState(), payloadObj)) { Toast.showWarning(msg) isPassed = false return { err: 'validator', msg: msg, params: params, id: i, } } else { continue } } } else { throw new Error('validator func is needed') } }if (isPassed) { action = nextAction || action if (typeof action.payload.promise === 'function') { let promise = action.payload.promise() action = { ...action, payload: { ...action.payload, promise: promise, } } } return next(action) } } } } }

调用方式
submit() { let params = {} params.name = this.state.mobileNum params.code = this.state.verifyCode params.pwd = this.state.pwdparams.iconurl = 'http://ovyjkveav.bkt.clouddn.com/17-11-9/48949929.jpg' params.gender = this.state.sex ? this.state.sex : '未知' params.province = '上海' params.city = '静安'let action = this.props.mockRegister(params) if (action instanceof Promise) { storage.save('userInfo', params) this.props.callback && this.props.callback('register') Toast.showSuccess('注册成功', () => Actions.pop()) } }

【React|React Native post请求参数校验组件(Validator)】从上面的调用方式我们可以看到,我们没有做任何参数的校验逻辑处理,这样使得页面控制器的js文件显得极为的干净,没有过多冗余的代码掺杂其中。
Validator详细使用方式请参照项目源码OneM https://github.com/guangqiang-liu/OneM
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