react中進行表單驗證毫無疑問是繁瑣的,尤其對于動態添加或刪除的表單,其驗證邏輯更為復雜, 目前UI框架使用material ui ,但其表單處理不太理想,而后研究了一下另一個UI 框架 ant design, 其對表單的處理大大方便了邏輯的編寫, 它使用async-validator處理驗證邏輯

目前更換框架毫無疑問是不現實的,于是就想直接引入async-validator,下面描述一個簡單的使用,具體信息可以去github上查看

validate.js

import Schema from 'async-validator';/** @params form: {*  descriptor: 驗證規則*  source: 待驗證字段*  callback: 異步驗證回調函數* }** @return errInfo {*  isAllValid: 驗證是否通過 * errors: 驗證失敗的字段信息* }* 不管驗證結果成功還是失敗,都會將結果信息寫入errors中,方便調用者直接通過數組下標方式獲取驗證結果信息* */function validate (form) {  let errInfo = {};  let errStatus = [];  let descriptor = form.descriptor;  let validator = new Schema(descriptor);  validator.validate(form.source, {    firstFields: true // 如果一個字段對應多個驗證規則, 只顯示驗證失敗的第一個規則信息,并不再進行后續規則的驗證  }, (errors, fields) => {    if (errors) {      /* 如需異步驗證需要傳入回調函數callback */      errors.forEach(item => {        errStatus.push(item.message.errStatus);      });      errInfo.errors = errors;      errInfo.isAllValid = !errStatus.includes(true);      form.callback && form.callback(errInfo);    }  });  return errInfo;}export default validate;

Form.js

/** * Created by wxw on 18-4-26. */import React from 'react';import {inject} from 'mobx-react';import { withStyles } from 'material-ui/styles';import validate from '../utils/validate';import {formTest2} from '../utils/validateRules';import Input, { InputLabel } from 'material-ui/Input';import { FormControl, FormHelperText } from 'material-ui/Form';import { MenuItem } from 'material-ui/Menu';import Select from 'material-ui/Select';import Button from 'material-ui/Button';const styles = theme => ({  container: {    display: 'flex',    flexWrap: 'wrap',  },  formControl: {    margin: theme.spacing.unit,  },  button: {    margin: theme.spacing.unit,    color: '#fff'  },});@inject('rootStore')@withStyles(styles)class FormTest2 extends React.Component {  state = {    name: {      value: '',      errStatus: false,      errMsg: '請輸入name'    },    age: {      value: '',      errStatus: false,      errMsg: '請選擇age'    }  };  handleChange =(field) => event => {    if (field === 'name') {      this.setState({ name: Object.assign(this.state.name, {value: event.target.value}) });    } else if (field === 'age') {      this.setState({ age: Object.assign(this.state.age, {value: event.target.value}) });    }  };  handleCheck = (field) => () => {    if (field === 'name') {      let errInfo = validate({        descriptor: formTest2,        source: {          name: this.state.name.value,        }      });      this.setState({ name: errInfo.errors[0].message});    } else if (field === 'age') {      let errInfo = validate({        descriptor: formTest2,        source: {          age: this.state.age.value,        }      });      this.setState({ age: errInfo.errors[1].message });    }  };  handleSubmit = () => {    let {name, age} = this.state;    let errInfo = validate({      descriptor: formTest2,      source: {        name: name.value,        age: age.value      }    });    errInfo.errors.forEach(item => {      this.setState({        [item.field]: item.message      });    });    if (errInfo.isAllValid) {      console.log('驗證成功');    } else {      console.log('驗證失敗');    }  };  render () {    const { classes } = this.props;    const {name, age} = this.state;    return (      <div className="form2">        <FormControl className={classes.formControl} error={name.errStatus}>          <InputLabel htmlFor="name-simple">Name</InputLabel>          <Input id="name-simple" value={name.value} onChange={this.handleChange('name')} placeholder="placeholder" onBlur={this.handleCheck('name')} />          <FormHelperText id="name-simple">{name.errMsg}</FormHelperText>        </FormControl>        <FormControl className={classes.formControl} error={age.errStatus}>          <InputLabel htmlFor="age-simple">Age</InputLabel>          <Select            value={age.value}            onChange={this.handleChange('age')}            onBlur={this.handleCheck('age')}            inputProps={{              name: 'age',              id: 'age-simple',            }}          >            <MenuItem value={10}>Ten</MenuItem>            <MenuItem value={20}>Twenty</MenuItem>            <MenuItem value={30}>Thirty</MenuItem>          </Select>          <FormHelperText id="age-simple">{age.errMsg}</FormHelperText>        </FormControl>        <Button variant="raised" color="primary" className={classes.button} onClick={this.handleSubmit}>          提交        </Button>      </div>    )  }}