javascript - Redux - mapDispatchToProps 不适用于注销功能

Question

在我的应用程序中，我有一个注销按钮，但它不会将您注销。我检查了减速器和动作，它们看起来还不错，因为我有另一个类似的应用程序，它在那里工作。

这是正在导入注销操作的“Nav.jsx”组件。

import React from 'react'
import {connect} from 'react-redux'
import {Link} from 'react-router-dom'
import {logoutUser} from '../actions/logout'

class Nav extends React.Component {
  constructor(props) {
    super(props)
    this.state = {
      showBurger: false,
      loggedOut: false
    }
    this.toggleBurger = this.toggleBurger.bind(this)
    this.logout = this.logout.bind(this)
  }
  toggleBurger() {
    this.setState({showBurger: !this.state.showBurger})
  }

  logout () {
    this.props.dispatch(logoutUser())
    this.setState({loggedOut: true})
  }

  render() {
    //
    const {auth} = this.props
    const {showBurger} = this.state
    const {loggedOut} = this.state
    console.log("is this logout?", this.logout.bind(this))

    return <nav className="navbar">
      <div className="container">
        <div className="navbar-brand">
          <span onClick={this.toggleBurger} className={`navbar-burger burger ${showBurger ? 'is-active': ''}`} data-target="navbarMenuHeroA">
            <span></span>
            <span></span>
            <span></span>
          </span>
        </div>
        <div id="navbarMenuHeroA" className={`navbar-menu ${showBurger ? "is-active" : ''}`}>
          <div className="navbar-end">
            <Link onClick={this.toggleBurget} className="navbar-item" to='/found'>Found</Link>
            <Link onClick={this.toggleBurget} className="navbar-item" to='/lost'>Lost</Link>
            {auth.isAuthenticated
              ? <span>
                <Link onClick={this.toggleBurget} className="navbar-item" to='/foundform'>Foundform</Link>
                <Link onClick={this.toggleBurget} className="navbar-item" to='/lostform'>Lostform</Link>
                <Link to="/" onClick={() => this.logout.bind(this)} className="navbar-item">Logout</Link>
              </span>
              : [
                <Link onClick={this.toggleBurger} className="navbar-item is-large" to='/login'>Login</Link>,
                <Link onClick={this.toggleBurger} className="navbar-item" to='/register'>Register</Link>,
              ]
            }
          </div>
        </div>
      </div>
    </nav>
  }
}

const mapDispatchToProps = (dispatch) => {
  return {
    logout: () => dispatch(logoutUser())
  }
}

const mapStateToProps = ({auth}) => {
  return {auth}
}

export default connect(mapStateToProps, mapDispatchToProps)(Nav)

当我运行它时，console.log 给我“这是注销吗？ƒ () { [native code] }”，我也收到此警告：“哈希历史记录无法推送相同的路径；新条目将不会添加到历史堆栈”。这是一个我现在自己在做的小组项目，我不知道到底出了什么问题？请帮忙。

如果有帮助，这是注销操作。

   import { removeUser } from '../utils/auth'
    function requestLogout () {
      return {
        type: 'LOGOUT_REQUEST',
        isFetching: true,
        isAuthenticated: true
      }
    }

    function receiveLogout () {
      return {
        type: 'LOGOUT_SUCCESS',
        isFetching: false,
        isAuthenticated: false
      }
    }

    // Logs the user out
    export function logoutUser () {
      return dispatch => {
        document.location = "/#/"
        dispatch(requestLogout())
        removeUser()
        dispatch(receiveLogout())
      }
    }

这是应用程序中的更多文件。这是 reducers 文件夹中的 auth.js。

import { isAuthenticated, getUserTokenInfo } from '../utils/auth'

const initialState = {
  isFetching: false,
  isAuthenticated: isAuthenticated(),
  user: getUserTokenInfo(),
  errorMessage: ''
}

export default function auth (state = initialState, action) {
  switch (action.type) {
    case 'LOGIN_REQUEST':
      return {
        ...state,
        isFetching: true,
        isAuthenticated: false,
        errorMessage: ''
      }
    case 'LOGIN_SUCCESS':
      return {
        ...state,
        isFetching: false,
        isAuthenticated: true,
        user: action.user
      }
    case 'LOGIN_FAILURE':
      return {
        ...state,
        isFetching: false,
        isAuthenticated: false,
        errorMessage: action.message
      }
    case 'LOGOUT_SUCCESS':
      return {
        ...state,
        isFetching: false,
        isAuthenticated: false,
        user: null
      }
    case 'REGISTER_REQUEST':
      return {
        ...state,
        isFetching: true,
        isAuthenticated: false,
        errorMessage: ''
      }
    case 'REGISTER_FAILURE':
      return {
        ...state,
        isFetching: false,
        isAuthenticated: false,
        errorMessage: action.message
      }
    default:
      return state
  }
}

以及组合了减速器的 index.js。

从“redux”导入 {combineReducers}

import auth from './auth'
import lostPets from './lostPets'
import found from './foundPets'

export default combineReducers({
  auth,
  found,
  lostPets
})

标签： javascriptreactjsreduxlogoutreact-props

Answer 1

您需要直接调用该函数而不是使用 dispatch 因为您已经在使用mapDispatchToProps，如果您不提供mapDispatchToProps，dispatch将提供给组件

import React from 'react'
import {connect} from 'react-redux'
import {Link} from 'react-router-dom'
import {logoutUser} from '../actions/logout'

class Nav extends React.Component {
  constructor(props) {
    super(props)
    this.state = {
      showBurger: false,
      loggedOut: false
    }
    this.toggleBurger = this.toggleBurger.bind(this)
    this.logout = this.logout.bind(this)
  }
  toggleBurger() {
    this.setState({showBurger: !this.state.showBurger})
  }

  logout () {
    this.props.logout() // call logout here from props
    this.setState({loggedOut: true})
  }

  render() {
    //
    const {auth} = this.props
    const {showBurger} = this.state
    const {loggedOut} = this.state
    console.log("is this logout?", this.logout.bind(this))

    return <nav className="navbar">
      <div className="container">
        <div className="navbar-brand">
          <span onClick={this.toggleBurger} className={`navbar-burger burger ${showBurger ? 'is-active': ''}`} data-target="navbarMenuHeroA">
            <span></span>
            <span></span>
            <span></span>
          </span>
        </div>
        <div id="navbarMenuHeroA" className={`navbar-menu ${showBurger ? "is-active" : ''}`}>
          <div className="navbar-end">
            <Link onClick={this.toggleBurget} className="navbar-item" to='/found'>Found</Link>
            <Link onClick={this.toggleBurget} className="navbar-item" to='/lost'>Lost</Link>
            {auth.isAuthenticated
              ? <span>
                <Link onClick={this.toggleBurget} className="navbar-item" to='/foundform'>Foundform</Link>
                <Link onClick={this.toggleBurget} className="navbar-item" to='/lostform'>Lostform</Link>
                <Link to="/" onClick={() => this.logout.bind(this)} className="navbar-item">Logout</Link>
              </span>
              : [
                <Link onClick={this.toggleBurger} className="navbar-item is-large" to='/login'>Login</Link>,
                <Link onClick={this.toggleBurger} className="navbar-item" to='/register'>Register</Link>,
              ]
            }
          </div>
        </div>
      </div>
    </nav>
  }
}

const mapDispatchToProps = (dispatch) => {
  return {
    logout: () => dispatch(logoutUser())
  }
}

const mapStateToProps = ({auth}) => {
  return {auth}
}

export default connect(mapStateToProps, mapDispatchToProps)(Nav)