React中使用async validator進行表單驗證的實例代碼

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;

/**
 * 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>
 )
 }
}

validateRules.js
/**
 * Created by wxw on 18-4-26.
 */
export const formTest2 = {
 name: {
 validator(rule, value, callback, source, options) {
 /* callback必須執行一次,帶參數為錯誤信息,不帶參數為正確 */
 if (value) {
 callback({
 errMsg: "請輸入name",
 value,
 errStatus: false
 });
 } else {
 callback({
 errMsg: "name不能為空",
 value,
 errStatus: true
 });
 }
 }
 },
 age: {
 validator(rule, value, callback, source, options) {
 /* callback必須執行一次,帶參數為錯誤信息,不帶參數為正確 */
 if (value) {
 callback({
 errMsg: "請選擇age",
 value,
 errStatus: false
 });
 } else {
 callback({
 errMsg: "必選項",
 value,
 errStatus: true
 });
 }
 }
 },
};