Export to CSV button in react table

问题

Looking for a way to add an "Export to CSV" button to a react-table which is an npmjs package (https://www.npmjs.com/package/react-table).

I need to add a custom button for exporting the table data to an excel sheet in the csv or xls format?

回答1:

Take a look at this npm library - https://www.npmjs.com/package/react-csv

For example -

import {CSVLink, CSVDownload} from 'react-csv';

const csvData =[
  ['firstname', 'lastname', 'email'] ,
  ['John', 'Doe' , 'john.doe@xyz.com'] ,
  ['Jane', 'Doe' , 'jane.doe@xyz.com']
];
<CSVLink data={csvData} >Download me</CSVLink>
// or
<CSVDownload data={csvData} target="_blank" />

回答2:

Although the accepted answer is correct, but it needed more work to make the integration seamless. Here is how integration will look like

import React from 'react';
import 'react-dropdown/style.css'
import 'react-table/react-table.css'
import ReactTable from "react-table";
import {CSVLink} from "react-csv";

const columns = [
   {
       Header: 'name',
       accessor: 'name', // String-based value accessors!
   },
   {
       Header: 'age',
       accessor: 'age',

  }]
class AllPostPage extends React.Component {
    constructor(props) {
       super(props);
       this.download = this.download.bind(this);
       this.state = {
          tableproperties: {
             allData: [
                {"name": "ramesh","age": "12"},
                {"name": "bill","age": "13"},
                {"name": "arun","age": "9"},
                {"name": "kathy","age": "21"}
             ]
          },
          dataToDownload: []
       };
    }

   download(event) {
      const currentRecords = this.reactTable.getResolvedState().sortedData;
      var data_to_download = []
      for (var index = 0; index < currentRecords.length; index++) {
         let record_to_download = {}
         for(var colIndex = 0; colIndex < columns.length ; colIndex ++) {
            record_to_download[columns[colIndex].Header] = currentRecords[index][columns[colIndex].accessor]
         }
         data_to_download.push(record_to_download)
      }
      this.setState({ dataToDownload: data_to_download }, () => {
         // click the CSVLink component to trigger the CSV download
         this.csvLink.link.click()
      })
    } 

    render() {
       return <div>
                 <div>
                    <button onClick={this.download}>
                        Download
                    </button>
                 </div>
                 <div>
                    <CSVLink
                        data={this.state.dataToDownload}
                        filename="data.csv"
                        className="hidden"
                        ref={(r) => this.csvLink = r}
                        target="_blank"/>

                 </div>
                 <div>
                    <ReactTable ref={(r) => this.reactTable = r}
                                data={this.state.tableproperties.allData} columns={columns} filterable
                                defaultFilterMethod={(filter, row) =>
                                    String(row[filter.id]).toLowerCase().includes(filter.value.toLowerCase())}
                    />
                 </div>
              </div>
    }
}

export default AllPostPage;

This will work with filters as well.

回答3:

I thought I'd piggyback on best wishes' extremely valuable answer with a simplified download implementation.

  export = e => {
    const currentRecords = this.ReactTable.getResolvedState().sortedData;
    this.setState({ dataToDownload: this.dataToDownload(currentRecords, columns) }, () =>
      this.csvLink.link.click()
    );
  }

  dataToDownload = (data, columns) =>
    data.map(record =>
      columns.reduce((recordToDownload, column) => {
        recordToDownload[column.Header] = record[column.accessor];
        return recordToDownload;
      }, {})
    );

I used this to allow multiple table exports in one component by adding additional export functions.

来源：https://stackoverflow.com/questions/48760815/export-to-csv-button-in-react-table