[英]Redux store isn't updating
I am trying to update the redux store with a list of groupsNames. 我正在尝试使用groupsNames列表更新redux商店。 The axios call inside the action works and there is a response. 行动中的axios调用工作,并有一个响应。 When I dispatch the payload the redux store doesnt get updated with response data. 当我调度有效负载时,redux存储不会更新响应数据。
FileName: actions/index.js FileName:actions / index.js
CODE: 码:
export const getGroups = () => async dispatch => {
axios.get(url + "groups")
.then(response => {
console.log(response.data);
dispatch({
type: GET_GROUPS,
payload: response.data
})
},
function(error) {
console.log(error)
}
);
};
Filename: reducers/groupsReducer.js 文件名:reducers / groupsReducer.js
CODE: 码:
import _ from 'lodash';
import {
GET_GROUPS,
} from '../actions/types';
export default (state = {}, action) => {
console.log(action.payload);
console.log("inside groupsREducer");
switch (action.payload) {
case GET_GROUPS:
console.log(action.payload);
return {...state, ..._.mapKeys(action.payload, 'id')};
default:
return state;
}
}
//mapKeys is a function from lowdadsh that takes an array and returns an object. // mapKeys是来自lowdadsh的函数,它接受一个数组并返回一个对象。
FileName: reducers/index.js FileName:reducers / index.js
CODE: 码:
import { combineReducers } from 'redux';
import authReducer from './authReducer';
import { reducer as formReducer } from 'redux-form';
import postsReducer from './postsReducer';
import groupsReducer from './groupsReducer';
export default combineReducers ({
auth: authReducer,
form: formReducer,
posts: postsReducer,
groups: groupsReducer,
});
FileName: GroupList.js FileName:GroupList.js
CODE: 码:
import React from "react";
import { connect } from "react-redux";
import { getGroups } from '../../actions';
class GroupList extends React.Component {
componentDidMount() {
this.props.getGroups();
}
render() {
return <div>
<h1>GroupList</h1>
</div>;
}
}
export default connect(null, { getGroups })(GroupList);
FileName: App.js FileName:App.js
CODE: 码:
import ReactDOM from 'react-dom';
import { Provider } from 'react-redux';
import { createStore, applyMiddleware, compose} from 'redux';
import reduxThunk from 'redux-thunk';
import reducers from './reducers';
import Landing from './components/Landing';
const composeEnhancers = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ || compose;
const store = createStore(
reducers,
composeEnhancers(applyMiddleware(reduxThunk))
);
ReactDOM.render(
<Provider store={store}>
<Landing />
</Provider>,
document.querySelector('#root')
);```
Ive connected to ReduxDevToolsExtension in chrome and when i check the state in there, it shows empty.
Your are using the wrong argument for your switch-case. 你的switch-case使用了错误的参数。
Replace switch (action.payload)
with switch (action.type)
用switch (action.payload)
替换switch (action.payload)
switch (action.type)
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