对不起,我可以添加评论,你没有使用 react-redux && redux-thunk 有什么原因吗?
您的要求可以通过这些轻松完成:您在 mapDispatchToProps 中获取您需要的内容并使用获取的初始状态调度一个操作
您的 reducer 将捕获所述调度的动作并更新其状态,这将在 mapStateToProps 的帮助下更新 react 组件的 props
我是凭记忆写的,可能不是 100% 准确:
redux 文件
componentNameReducer = (
state = {
history: ''
},
type = {}
) => {
switch(action.type) {
case 'HISTORY_FETCHED_SUCCESSFULLY':
return Object.assign({}, state, {
history: action.payload.history
});
default:
return state;
}
};
mapStateToProps = (state) => {
history: state.PathToWhereYouMountedThecomponentNameReducerInTheStore.history
};
mapDispatchToProps = (dispatch) => ({
fetchHistory : () => {
fetch('url/history')
.then((response) => {
if (response.status > 400) {
disptach({
type: 'HISTORY_FETCH_FAILED',
payload: {
error: response._bodyText
}
});
}
return response;
})
.then((response) => response.json())
.then((response) => {
//do checkups & validation here if you want before dispatching
dispatch({
type: 'HISTORY_FETCHED_SUCCESSFULLY',
payload: {
history: response
}
});
})
.catch((error) => console.error(error));
}
});
module.exports = {
mapStateToProps,
mapDispatchToProps,
componentNameReducer
}
在你的反应组件上你会need:
import React, {
Component
} from 'somewhere';
import { mapStateToProps, mapDispatachToProps } from 'reduxFile';
import { connect } from 'react-redux';
class HistoryComponent extends Component {
constructor(props){
super(props);
this.props.fetchHistory(); //this is provided by { connect } from react-redux
}
componentWillReceiveProps(nextProps){
browserHistory.push(nextProps.history);
}
render() {
return (
);
}
}
//proptypes here to make sure the component has the needed props
module.exports = connect(
mapStateToProps,
mapDispatachToProps
)(HistoryComponent);