我正在尝试在用户提交表单时派发一个动作。假设我有一个提交按钮,触发表单上的
onSubmit
事件(最终将显示旋转图标,表示表单请求正在处理中,但此时,提交按钮只显示一个true
或false
值,表示是否显示旋转图标)。
LoginPage.js
import React from 'react';
import { Link } from 'react-router-dom';
export class LoginPage extends React.Component {
constructor(props) {
super(props);
this.handleLogin = this.handleLogin.bind(this);
}
handleLogin(e) {
e.preventDefault();
let email = document.getElementById('userEmail').value;
let password = document.getElementById('userPassword').value;
this.props.loginHandler(email, password);
}
render() {
return (
<form onSubmit={ this.handleLogin }>
<input type="submit" value={ this.props.requestingLogin } />
</form>
);
}
}
export default LoginPage;
LoginPageContainer.js
import React from 'react';
import { connect } from 'react-redux';
import LoginPage from '../../components/login/LoginPage';
import { loginUser } from '../../actions';
export class LoginPageContainer extends React.Component {
constructor(props) {
super(props);
}
render() {
return (
<LoginPage requestingLogin={ this.props.requestingLogin } loginHandler={ this.props.loginUser } />
);
}
}
const mapStateToProps = state => {
const { loginUserReducer } = state;
return {
requestingLogin: loginUserReducer.isRequestingLogin,
};
};
const mapDispatchToProps = dispatch => {
return {
loginUser: (email, password) => {
dispatch(loginUser(email, password));
}
}
};
export default connect(mapStateToProps, mapDispatchToProps)(LoginPageContainer);
actions/目录下的index.js
export const REQUEST_LOGIN = 'REQUEST_LOGIN';
function requestLogin() {
return {
type: REQUEST_LOGIN,
};
};
export const loginUser = (email, password) => {
return dispatch => {
// this works because when the button is clicked,
// I can successfully console log in here.
dispatch(requestLogin); // THIS DISPATCH IS NOT WORKING
// API call here...
}
};
reducers/中的index.js
import { combineReducers } from 'redux';
import { REQUEST_LOGIN } from '../actions';
const initialLoginState = {
isRequestingLogin: false,
};
function loginUserReducer(state = initialLoginState, action) {
switch(action.type) {
case REQUEST_LOGIN:
return Object.assign({}, state, { isRequestingLogin: true });
default:
console.log('returned from default');
return state;
}
}
const allReducers = combineReducers({
loginUserReducer,
});
export default allReducers;
奇怪的是,我在loginUser()
内部执行dispatch()
后的API调用有效,但dispatch()
本身却无效。
我看过许多在线教程,我的代码与我看到的相符,但出于某种原因,我无法弄清派发操作为什么不起作用。非常感谢您提供任何帮助。
handleLogin()
方法中有e.preventDefault();
,但是我忘记在问题中加上了。 - Ol' Reliabledispatch(requestLogin);
改为dispatch(requestLogin());
,并可能将所需的数据传递给动作。 - Pantherdispatch(requestLogin);
更改为dispatch(requestLogin(email, password);
。如果仍然无法正常工作,请告诉我。 - Ol' Reliable