我正在做一個簡單的redux/react todo應用程序。我無法拿到待辦事項。我能夠console.log
的數據,但不能讓它出現。我究竟做錯了什麼?爲什麼我的待辦事項與Redux不兼容?
我分開的文件,這是我app.js
:
import React, { Component } from 'react';
import Todos from './todos';
import TodoList from "./todo_list";
export default class App extends Component {
render() {
return (
<div>
<Todos />
<TodoList/>
</div>
);
}
}
這裏是容器Todos
:
import React, {Component} from 'react';
import { connect } from 'react-redux';
import { bindActionCreators } from 'redux';
import { addTodo } from '../actions/index';
class Todos extends Component {
constructor(props) {
super(props);
this.state = {text: ''};
}
addTodo(e) {
e.preventDefault();
this.props.addTodo(this.state.text);
this.setState({
text: ''
});
}
updateValue(e) {
this.setState({text: e.target.value})
}
render() {
return (
<div>
<form onSubmit={(e) => this.addTodo(e)}>
<input
placeholder="Add Todo"
value={this.state.text}
onChange={(e) => {
this.updateValue(e)
}}
/>
<button type="submit">Add Todo</button>
</form>
</div>
);
}
}
function mapDispatchToProps(dispatch) {
return bindActionCreators({addTodo}, dispatch);
}
export default connect(null, mapDispatchToProps)(Todos);
這裏是TodoList
:
import React, {Component} from 'react';
import {connect} from 'react-redux';
class TodoList extends Component {
render() {
return (
<ul>
{ this.props.todo.map((tod) => {
return <li key={tod.message}>{ tod.message }</li>
})}
</ul>
);
}
}
function mapStateToProps({ todo }) {
console.log({ todo });
return { todo };
}
export default connect(mapStateToProps)(TodoList);
減速機:
import { ADD_TODO } from '../actions/types';
export default function(state=[], action) {
switch(action.type) {
case ADD_TODO:
return [ action.payload.message, ...state ]
}
return state;
}
和行動
import { ADD_TODO } from './types';
const uid =() => Math.random().toString(34).slice(2);
export function addTodo(message) {
const action = {
id: uid(),
message: message
};
return {
type: ADD_TODO,
payload: action
};
}
這就是我從獲得的console.log({TODO});
這裏是我的減速/指數:
import { combineReducers } from 'redux';
import TodosReducer from './reducer_addTodo';
const rootReducer = combineReducers({
todo: TodosReducer
});
export default rootReducer;
你從console.log({todo})得到了什麼? –
我在問題上添加了一個編輯,它顯示了我從console.log獲得的內容。 – userden