reactjsreact-table-v6

Expand subcomponent rows by default with react-table


I am using react-table to display some rows, each row has a subcomponent, which just renders some more "subrows." However, you have to click the row in order to show the subrows. React-table does not have a setting to have then expanded by default. There is some discussion out there on doing this but I can't seem to make anything work with my example.

Current looks like this on load: enter image description here

After clicking on each row (how im trying to get it to look by default) enter image description here

Table.js

import React, { Component } from 'react';
import ReactTable from 'react-table';
import { columns, subComponent } from './tableSetup';


class Table extends Component {
  constructor(props) {
    super(props);
  }

  render() {
    return (
      <ReactTable data={ data }
        columns={ columns }
        SubComponent={ subComponent }
        expandedRows={ true }
        resizable={ false }
        minRows={ 1 }
        pageSize={ 8 }
        showPageSizeOptions={ false } />
    );
  }
}

export default Table;

tableSetup.js with exampe data import React from 'react';

export const columns = [
  {
    Header: () => (
      <div />
    ),
    accessor: 'name',
    maxWidth: 300,
    Cell: row => (
      <div className='first-column'>{row.value}</div>
    )
  }
];

export const subComponent = row => {
  return (
    <div>
      {row.original.types.map((type, id) => {
        return (
          <div className='subRow' key={ id }>{ type.name }</div>
        );
      })}
    </div>
  );
};

export const data = [
  {
    id: '12345',
    name: 'sports',
    types: [
      {
        name: 'basketball',
        id: '1'
      },
      {
        name: 'soccer',
        id: '2'

      },
      {
        name: 'baseball',
        id: '3'
      }
    ]
  },
  {
    id: '678910',
    name: 'food',
    types: [
      {
        name: 'pizza',
        id: '4'
      },
      {
        name: 'hamburger',
        id: '5'

      },
      {
        name: 'salad',
        id: '6'
      }
    ]
  }
];

Solution

  • In order to expand all rows from the beginning, you can use the props defaultExpanded in which you give all the rows index you want to expand. (In this case, all of them), like this :

      render() {
        // Set all the rows index to true
        const defaultExpandedRows = data.map((element, index) => {return {index: true}});
        return (
          <div>
            <ReactTable
              data={data}
              // Use it here
              defaultExpanded={defaultExpandedRows}
              columns={columns}
              defaultPageSize={10}
              className="-striped -highlight"
              SubComponent={subComponent}
            />
          </div>
        );
      }
    

    For more information, you can look here.