React Redux

bindActionCreators

bindActionCreators(actionCreators, dispatch)

使用场景

需要把action creator往下传到一个组件上，却不想让这个组建觉察到Redux的存在，而且不希望把Redux store
或dispatch传给它



参数

  1. actionCreators(Fuction Or Object):一个action creator，或者键值是action creators的对象

  2. dispatch(Function):一个dispatch函数，由store实例提供

返回值

(Function or Object):一个与原对象类似的对象，只不过这个对象中的每个函数值都可以直接dispatch
action。如果传入的是一个函数，返回的也是一个函数。


示例

TodoActionCreationCreator.js 

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export function addTodo(text) {
	return {
		type: 'ADD_TODO',
		text
	}
}

export function removeTodo(id) {
	return {
		type: 'REMOVE_TODO',
		id
	}
}



SomeComponent.js 

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import React from 'react';
import { bindActionCreators } from 'redux';
import { connect } from 'react-redux';
import * as TodoActionCreators from './TodoActionCreators';

class TodoListContainer extends React.Component {

	componentDidMount() {
		//由react-redux注入
		let { dispatch } = this.props;

		let action = TodoActionCreators.addTodo('Use Redux');
		dispatch(action);
	}

	render() {

		let { todos, dispatch } = this.props;

		//应用bindActionCreator
		let boundActionCreators = bindActionCreators(TodoActionCreators, dispatch);

		return (
			<TodoList todos={todos}
				{...boundActionCreators}
			/>
		);

		//一种可以替换bindActionCreators的做法是直接把dispatch函数和action creators当作props传递给组件
		//return <TodoList todos={todos} dispatch={dispatch} />
	}
}

export default connect(state => ({todos: state.todos}))(TodoListContainer);