To enable sorting functionality upon clicking the column headers in your React table, you can follow these steps:

  • Define a state to keep track of the current sorting configuration.
  • Implement a function to handle sorting based on the clicked column header.
  • Modify the table header cells to trigger the sorting function when clicked.
  • Update the useEffect hook to implement sorting based on the sorting configuration.
import React, { useState, useEffect } from 'react';
import { getUsers } from '../../services/userService';
import { useNavigate } from 'react-router-dom';
import Pagination from '@mui/material/Pagination';

const Table = () => {
    const navigate = useNavigate();

    const [users, setUsers] = useState([]);
    const [currentUsers, setCurrentUsers] = useState([]);
    const [search, setSearch] = useState('');
    const [sorting, setSorting] = useState({ key: "name", ascending: true });

    const pageItemCount = 15;
    const [pageCount, setPageCount] = useState(0);
    const [currentPage, setCurrentPage] = useState(1);

    useEffect(async () => {
        try {
            const response = await getUsers(search);
            setUsers(response.data.users);
            setPageCount(Math.ceil(response.data.users.length / pageItemCount));
            setCurrentUsers(response.data.users.slice(0, pageItemCount));
        } catch (error) {
            console.error('Error fetching users:', error);
        }
    }, [search]);

    useEffect(() => {
        const sortedUsers = [...currentUsers].sort((a, b) => {
            if (a[sorting.key] < b[sorting.key]) {
                return sorting.ascending ? -1 : 1;
            }
            if (a[sorting.key] > b[sorting.key]) {
                return sorting.ascending ? 1 : -1;
            }
            return 0;
        });
        setCurrentUsers(sortedUsers);
    }, [currentUsers, sorting]);

    function applySorting(key) {
        if (sorting.key === key) {
            setSorting({ ...sorting, ascending: !sorting.ascending });
        } else {
            setSorting({ key: key, ascending: true });
        }
    }

    const changePage = (i) => {
        setCurrentPage(i);
        const startItem = (i - 1) * pageItemCount;
        setCurrentUsers(users.slice(startItem, startItem + pageItemCount));
    };

    const handleChange = (event, value) => {
        changePage(value);
    };

    return (
        <div dir='rtl' className='bg-background mt-10 px-5 rd1200:px-30 overflow-auto'>
            <div className='flex flex-wrap justify-between items-center'>
                <div>
                    <input
                        type='text'
                        className='my-3 py-2 pl-3 pr-10 text-sm text-text-secondary shadow-sm focus:ring-2 ring-text-secondary rounded-md w-full rd500:w-120'
                        placeholder='search ..'
                        onChange={(e) => setSearch(e.target.value)}
                        value={search}
                    />
                </div>

                <div className='flex justify-center'>
                    <select
                        className='form-select form-select-sm my-3 py-2 pl-15 pr-2 text-sm text-text-secondary shadow-sm rounded-md w-full focus:ring-2 focus:text-gray-700 focus:bg-white focus:border-blue-600 focus:outline-none '
                        aria-label='.form-select-sm example'
                        onChange={(e) => navigate(e.target.value)}
                    >
                        <option value='/'>users</option>
                        <option value='/ext'>other users</option>
                    </select>
                </div>
            </div>

            <table className='w-full border-separate rounded-md'>
                <thead>
                    <tr className='bg-text-secondary text-white shadow-sm text-center'>
                        <th className='p-2' onClick={() => applySorting('name')}>
                            name {sorting.key === 'name' && (sorting.ascending ? 'â–²' : 'â–¼')}
                        </th>
                        <th className='p-2' onClick={() => applySorting('phone')}>
                            phone {sorting.key === 'phone' && (sorting.ascending ? 'â–²' : 'â–¼')}
                        </th>
                    </tr>
                </thead>
                <tbody>
                    {currentUsers.map((item) => (
                        <tr
                            key={item.id}
                            className={index % 2 === 0 ? 'bg-white shadow-sm text-center' : 'bg-text bg-opacity-5 shadow-sm text-center'}
                        >
                            <td className='text-text text-sm p-2'>{item.name}</td>
                            <td className='text-text text-sm p-2'>{item.phone}</td>
                        </tr>
                    ))}
                </tbody>
            </table>
            <Pagination
                className='mt-2 pb-20'
                dir='ltr'
                page={currentPage}
                count={pageCount}
                onChange={handleChange}
                variant='outlined'
                shape='rounded'
            />
        </div>
    );
};
export default Table;

This code introduces sorting indicators (â–² and â–¼) alongside the column headers to show the current sorting direction. Additionally, it enhances the sorting function to switch the sorting direction upon multiple clicks on the same column header.

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