Created
April 25, 2018 02:59
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Step 5: Export to Excel
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import React, { Component } from 'react'; | |
import ReactTable from 'react-table' | |
import 'react-table/react-table.css' | |
import firebase from './config' | |
import XLSX from 'xlsx' | |
class App extends Component { | |
constructor(props) { | |
super(props) | |
this.state = { | |
users: [] | |
} | |
this.exportFile = this.exportFile.bind(this) | |
} | |
componentWillMount(){ | |
this.getUsers() | |
} | |
getUsers() { | |
let users = [] | |
firebase.database().ref(`users/`).once('value', snapshot => { | |
snapshot.forEach(snap => { | |
users.push(snap.val()) | |
}) | |
this.setState({ | |
users | |
}) | |
}) | |
} | |
exportFile() { | |
let users = [["First Name", "Last Name", "Age"]] | |
this.state.users.forEach((user) => { | |
let userArray = [user.firstname, user.lastname, user.age] | |
users.push(userArray) | |
}) | |
const wb = XLSX.utils.book_new() | |
const wsAll = XLSX.utils.aoa_to_sheet(users) | |
XLSX.utils.book_append_sheet(wb, wsAll, "All Users") | |
XLSX.writeFile(wb, "export-demo.xlsx") | |
} | |
render() { | |
const userColumns = [ | |
{ | |
Header: "Name", | |
columns: [ | |
{ | |
Header: "First Name", | |
id: "firstname", | |
accessor: d => d.firstname | |
}, | |
{ | |
Header: "Last Name", | |
id: "lastname", | |
accessor: d => d.lastname | |
} | |
] | |
}, | |
{ | |
Header: "Age", | |
columns: [ | |
{ | |
Header: "Age", | |
id: "age", | |
accessor: d => d.age | |
} | |
] | |
} | |
] | |
return ( | |
<div style={style}> | |
<div> | |
<h1>Export Demo</h1> | |
<button | |
onClick={this.exportFile}>Export to Excel</button> | |
<ReactTable | |
style={{marginLeft:'-40%', marginRight:'-40%'}} | |
data={this.state.users} | |
columns={userColumns} | |
/> | |
</div> | |
</div> | |
); | |
} | |
} | |
const style = { | |
display: 'flex', | |
justifyContent: 'center', | |
} | |
export default App; |
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