如何在 redux-form 中使用 select 输入类型?
How to use a select input type with redux-form?
我搜索并尝试了很多使用 redux-form 库的 select 输入类型和我的反应表单。
一切正常,所有其他输入类型都正常,但 select 不适用于以下操作:初始化、检索提交的值等。
我尝试将模型道具与 "select" 一起使用,并使用我自己的函数来渲染它。当我为模型使用 select 版本时,我设法获得了组合框字段的选项,但我没有设法设置一个值并在提交时检索它。使用我自己的函数,我什至无法将选项设置到列表中...
这是我的代码:
// FormComponent file
const { handleSubmit } = this.props;
...
<form onSubmit={handleSubmit(this.props.onSubmitProfileUpdate)}>
<Field name='ranking' className='input-row form-group form-control' component={renderSelectField}>
{tennisRankings.map(ranking =>
<option value={ranking} key={ranking}>{ranking}</option>
)}
</Field>
...
ProfileForm.propTypes = {
user: React.PropTypes.object,
fields: React.PropTypes.shape({
firstname: React.PropTypes.string,
lastname: React.PropTypes.string,
ranking: React.PropTypes.string,
email: React.PropTypes.string,
telephone: React.PropTypes.string,
city: React.PropTypes.string
}),
errorMessage: React.PropTypes.string,
confirmationMessage: React.PropTypes.string,
onSubmitProfileUpdate: React.PropTypes.func.isRequired,
handleSubmit: propTypes.handleSubmit,
initialize: propTypes.initialize
};
export default reduxForm({
form: 'profile',
validate: validateProfileForm
})(ProfileForm);
我渲染字段的函数:
// Functions shared
export const renderSelectField = (field) => {
var styles = {};
var containerStyle = getInputStylesContainer();
if (field.input.value || field.meta.touched) {
if (!field.meta.error) {
styles = getInputStylesSuccess();
containerStyle = classNames(containerStyle, {'has-success': true});
} else {
styles = getInputStylesError();
containerStyle = classNames(containerStyle, {'has-error': true});
}
}
return (<div className={containerStyle}>
{displayInputLabel(styles.idInput, field.label)}
<select {...field.input} className='form-control' id={styles.idInput} value={field.input.value} type={field.type} placeholder={field.label} aria-describedby={styles.ariaDescribedBy} />
<span className={styles.glyphicon} aria-hidden='true' />
{field.meta.touched && field.meta.error &&
displayErrorMessage(field.meta.error)}
</div>);
};
你有什么线索可以执行这个简单的动作吗?放纵我是初学者:)
非常感谢您的帮助:)
编辑:
这是我初始化表单值的方式:
// FormComponent file
handleInitialize () {
// TODO: Manage properly user not available case (redux form reason ?)
if (this.props.user.firstname === undefined) return;
const initData = {
'firstname': this.props.user.firstname.toString(),
'lastname': this.props.user.lastname.toString(),
'city': this.props.user.city === undefined ? '' : this.props.user.city.toString(),
'email': this.props.user.email.toString(),
'ranking': this.props.user.ranking.toString(),
'telephone': this.props.user.telephone === undefined ? '' : this.props.user.telephone.toString()
};
console.log('Ranking', this.props.user.ranking);
this.props.initialize(initData);
}
componentDidMount () {
this.handleInitialize();
}
....
export default reduxForm({
form: 'profile',
validate: validateProfileForm
})(ProfileForm);
这是来自 official docs 的简单 select 字段的示例:
<div>
<label>Favorite Color</label>
<div>
<Field name="favoriteColor" component="select">
<option></option>
<option value="ff0000">Red</option>
<option value="00ff00">Green</option>
<option value="0000ff">Blue</option>
</Field>
</div>
</div>
您的实施没有映射 option
,因此 select
不起作用。
旁注
要传递初始值,您应该将 initialValues
属性 添加到 reduxForm 配置,而不是将 value
属性添加到字段。示例如下:
export default reduxForm({
form: 'profile',
validate: validateProfileForm,
initialValues: { ... }
})(ProfileForm);
select 评级示例:redux-form
示例如何处理 selectredux 形式的离子
import React, { Component } from 'react';
import { Link } from 'react-router-dom';
/*------- connect react with redux --------*/
import { connect } from 'react-redux';
/*------- action which all data to data base --------*/
import { addProduct } from '../actions'
/*------- redux form --------*/
import { Field, reduxForm } from 'redux-form';
class Form extends Component {
//PRISTINE / DIRTY // TOUCHED / ERROR : events in redux-form
/*------- renderSelectField --------*/
renderSelectField(field){
const className = `form-input ${field.meta.touched && field.meta.error ? 'has-error':''}`;
return(
<div className={className}>
<label>{field.myLabel}</label>
<select {...field.input} >
{field.children}
</select>
<div className="error">
{field.meta.touched ? field.meta.error:''}
</div>
</div>
)
}
/*------- onSubmit() : runs on submit --------*/
onSubmit(values){
// const error = this.validate(values);
// console.log(error)
console.log(values)
this.props.dispatch(addProduct({
values
}))
}
render(){
return(
<div className="Form">
<div className="top">
<h3>Add a Message</h3>
<Link to="/">Back</Link>
</div>
<form onSubmit={this.props.handleSubmit((event)=>this.onSubmit(event))}>
<Field
myLabel="Select Rating"
name="rating"
component={this.renderSelectField}>
<option></option>
<option value='1'>1</option>
<option value='2'>2</option>
<option value='3'>3</option>
<option value='4'>4</option>
<option value='5'>5</option>
</Field>
<button type="submit">Submit</button>
</form>
</div>
)
}
}
/*------- validate() : validates our form --------*/
function validate(values){
const errors = {};
if(!values.rating){
errors.rating = "The rating is empty"
}
return errors;
}
/*------- it returns messages when action is called and state going to change --------*/
function mapStateToProps(state){
return {
product: state.data
}
}
/*------- reduxForm : connects redux-form with react form --------*/
export default reduxForm({
validate,
form:'AddProduct',
})(
connect(mapStateToProps,{addProduct})(Form)
)
我搜索并尝试了很多使用 redux-form 库的 select 输入类型和我的反应表单。
一切正常,所有其他输入类型都正常,但 select 不适用于以下操作:初始化、检索提交的值等。
我尝试将模型道具与 "select" 一起使用,并使用我自己的函数来渲染它。当我为模型使用 select 版本时,我设法获得了组合框字段的选项,但我没有设法设置一个值并在提交时检索它。使用我自己的函数,我什至无法将选项设置到列表中...
这是我的代码:
// FormComponent file
const { handleSubmit } = this.props;
...
<form onSubmit={handleSubmit(this.props.onSubmitProfileUpdate)}>
<Field name='ranking' className='input-row form-group form-control' component={renderSelectField}>
{tennisRankings.map(ranking =>
<option value={ranking} key={ranking}>{ranking}</option>
)}
</Field>
...
ProfileForm.propTypes = {
user: React.PropTypes.object,
fields: React.PropTypes.shape({
firstname: React.PropTypes.string,
lastname: React.PropTypes.string,
ranking: React.PropTypes.string,
email: React.PropTypes.string,
telephone: React.PropTypes.string,
city: React.PropTypes.string
}),
errorMessage: React.PropTypes.string,
confirmationMessage: React.PropTypes.string,
onSubmitProfileUpdate: React.PropTypes.func.isRequired,
handleSubmit: propTypes.handleSubmit,
initialize: propTypes.initialize
};
export default reduxForm({
form: 'profile',
validate: validateProfileForm
})(ProfileForm);
我渲染字段的函数:
// Functions shared
export const renderSelectField = (field) => {
var styles = {};
var containerStyle = getInputStylesContainer();
if (field.input.value || field.meta.touched) {
if (!field.meta.error) {
styles = getInputStylesSuccess();
containerStyle = classNames(containerStyle, {'has-success': true});
} else {
styles = getInputStylesError();
containerStyle = classNames(containerStyle, {'has-error': true});
}
}
return (<div className={containerStyle}>
{displayInputLabel(styles.idInput, field.label)}
<select {...field.input} className='form-control' id={styles.idInput} value={field.input.value} type={field.type} placeholder={field.label} aria-describedby={styles.ariaDescribedBy} />
<span className={styles.glyphicon} aria-hidden='true' />
{field.meta.touched && field.meta.error &&
displayErrorMessage(field.meta.error)}
</div>);
};
你有什么线索可以执行这个简单的动作吗?放纵我是初学者:)
非常感谢您的帮助:)
编辑:
这是我初始化表单值的方式:
// FormComponent file
handleInitialize () {
// TODO: Manage properly user not available case (redux form reason ?)
if (this.props.user.firstname === undefined) return;
const initData = {
'firstname': this.props.user.firstname.toString(),
'lastname': this.props.user.lastname.toString(),
'city': this.props.user.city === undefined ? '' : this.props.user.city.toString(),
'email': this.props.user.email.toString(),
'ranking': this.props.user.ranking.toString(),
'telephone': this.props.user.telephone === undefined ? '' : this.props.user.telephone.toString()
};
console.log('Ranking', this.props.user.ranking);
this.props.initialize(initData);
}
componentDidMount () {
this.handleInitialize();
}
....
export default reduxForm({
form: 'profile',
validate: validateProfileForm
})(ProfileForm);
这是来自 official docs 的简单 select 字段的示例:
<div>
<label>Favorite Color</label>
<div>
<Field name="favoriteColor" component="select">
<option></option>
<option value="ff0000">Red</option>
<option value="00ff00">Green</option>
<option value="0000ff">Blue</option>
</Field>
</div>
</div>
您的实施没有映射 option
,因此 select
不起作用。
旁注
要传递初始值,您应该将 initialValues
属性 添加到 reduxForm 配置,而不是将 value
属性添加到字段。示例如下:
export default reduxForm({
form: 'profile',
validate: validateProfileForm,
initialValues: { ... }
})(ProfileForm);
select 评级示例:redux-form
示例如何处理 selectredux 形式的离子
import React, { Component } from 'react';
import { Link } from 'react-router-dom';
/*------- connect react with redux --------*/
import { connect } from 'react-redux';
/*------- action which all data to data base --------*/
import { addProduct } from '../actions'
/*------- redux form --------*/
import { Field, reduxForm } from 'redux-form';
class Form extends Component {
//PRISTINE / DIRTY // TOUCHED / ERROR : events in redux-form
/*------- renderSelectField --------*/
renderSelectField(field){
const className = `form-input ${field.meta.touched && field.meta.error ? 'has-error':''}`;
return(
<div className={className}>
<label>{field.myLabel}</label>
<select {...field.input} >
{field.children}
</select>
<div className="error">
{field.meta.touched ? field.meta.error:''}
</div>
</div>
)
}
/*------- onSubmit() : runs on submit --------*/
onSubmit(values){
// const error = this.validate(values);
// console.log(error)
console.log(values)
this.props.dispatch(addProduct({
values
}))
}
render(){
return(
<div className="Form">
<div className="top">
<h3>Add a Message</h3>
<Link to="/">Back</Link>
</div>
<form onSubmit={this.props.handleSubmit((event)=>this.onSubmit(event))}>
<Field
myLabel="Select Rating"
name="rating"
component={this.renderSelectField}>
<option></option>
<option value='1'>1</option>
<option value='2'>2</option>
<option value='3'>3</option>
<option value='4'>4</option>
<option value='5'>5</option>
</Field>
<button type="submit">Submit</button>
</form>
</div>
)
}
}
/*------- validate() : validates our form --------*/
function validate(values){
const errors = {};
if(!values.rating){
errors.rating = "The rating is empty"
}
return errors;
}
/*------- it returns messages when action is called and state going to change --------*/
function mapStateToProps(state){
return {
product: state.data
}
}
/*------- reduxForm : connects redux-form with react form --------*/
export default reduxForm({
validate,
form:'AddProduct',
})(
connect(mapStateToProps,{addProduct})(Form)
)