我试图使用Firebase捕获一些数据并显示在我的网络应用程序中,但我不知道如何去做。我正在使用reduxThunk。 我得到错误ID没有定义。 这是我的组件React-Redux - 从Firebase获取数据
trabalhos.js
import React, { Component } from 'react';
import { connect } from 'react-redux';
import * as actions from '../actions';
class Trabalhos extends Component {
componentWillMount(){
this.props.fetchData();
}
renderList({id,tec,title}){
return(
<li className="list-group-item" key={id}>
<p>{title}</p>
<p>{tec}</p>
</li>
)
}
render(){
return (
<div>
<div className="trabalhos">
<div className="trabalhos_caixa">
<div className="row">
<div className="col-xs-12">
<ul className="no_pad">
{this.renderList()}
</ul>
</div>
</div>
</div>
</div>
</div>
);
}
}
function mapStateToProps(state){
return { fetch: state.fetch };
}
export default connect(mapStateToProps, actions)(Trabalhos);
这是我行动
动作/ index.js
import Firebase from 'firebase';
import { FETCH_DATA } from './types';
const Data = new Firebase('https://portofoliofirebase.firebaseio.com');
export function fetchData(){
return dispatch => {
Data.on('value', snapshot => {
dispatch({
type: FETCH_DATA,
payload: snapshot.val()
});
});
}
}
这是我index.js
import React from 'react';
import ReactDOM from 'react-dom';
import { Provider } from 'react-redux';
import { createStore, applyMiddleware } from 'redux';
import { Router, browserHistory } from 'react-router';
import reducers from './reducers';
import routes from './routes';
import * as **firebase** from 'firebase';
import **reduxThunk** from 'redux-thunk'
const createStoreWithMiddleware = applyMiddleware(reduxThunk)(createStore);
const store = createStoreWithMiddleware(reducers);
ReactDOM.render(
<Provider store={store}>
<Router history={browserHistory} routes={routes} />
</Provider>
, document.querySelector('.container'));
这是我fetch_reducer.js
import { FETCH_DATA } from '../actions/types';
export default function(state = [], action) {
switch(action.type){
case FETCH_DATA:
return action.payload.data;
}
return state;
}
这是我减速index.js
import { combineReducers } from 'redux';
import fetchReducer from './fetch_reducer';
const rootReducer = combineReducers({
fetch: fetchReducer
});
export default rootReducer;
Trabalhos组件获取其道具在哪里设置?你打算将它作为一个连接组件吗? –
我已更新! –
@Hseleiro错误来自哪里?你的Firebase应用程序工作吗?从文档看来,您必须在Firebase处于活动状态之前运行initializeApp。另外,你必须在'firebase.database()。ref()'上调用'.on()'来监听变化。我不认为你可以直接在firebase实例上调用'.on()'(下面的链接)。 https://firebase.google.com/docs/reference/js/firebase https://firebase.google.com/docs/database/web/read-and-write – Shane