флажок таблицы материалов не был выбран при использовании useState (Reactjs)

Question

Привет, я новичок в реакции, у меня проблема с таблицей материалов, из-за которой флажки не выбираются при использовании useState вместе с onSelectionChange. Я создал таблицу и установил функцию onSelectedChange (), а внутри добавляю useState () с данными, взятыми из onSelectionChange. Флажок не проверяется, когда я нажимаю. Пожалуйста, помогите мне.

код:

  const [selects, setSelects] = useState({});
  const handleCheckboxClick = (rowData) => {
    setSelects({
      selectedItems: {
        ...rowData,
        tableData: {
          checked: true,
        },
      },
    });
  };

 <MaterialTable
        title="Asset Group"
        options={[
    pageSizeOptions: false,
        headerStyle: {
            backgroundColor: "#fff",
        },
        selection: true,
     showFirstLastPageButtons: false,
    ]}
        columns={assetGroupColumns}
        onSelectionChange={(event) => {
          handleCheckboxClick(event);
    //console.log(event)
        }}
        data={arrangeData(data.asset_group)}
        components={{
          Toolbar: (props) => (
            <div style={{ display: "none" }}>
              <MTableToolbar {...props} />
            </div>
          ),
        }}
      />
    </>

большое спасибо

Answer 1

Привет, пожалуйста, возьмите этот пример ниже. Это очень большой пример, но он отлично подходит для ваших требований.

import React from 'react';
import PropTypes from 'prop-types';
import clsx from 'clsx';
import {lighten, makeStyles} from '@material-ui/core/styles';
import Table from '@material-ui/core/Table';
import TableBody from '@material-ui/core/TableBody';
import TableCell from '@material-ui/core/TableCell';
import TableContainer from '@material-ui/core/TableContainer';
import TableHead from '@material-ui/core/TableHead';
import TablePagination from '@material-ui/core/TablePagination';
import TableRow from '@material-ui/core/TableRow';
import TableSortLabel from '@material-ui/core/TableSortLabel';
import Toolbar from '@material-ui/core/Toolbar';
import Typography from '@material-ui/core/Typography';
import Paper from '@material-ui/core/Paper';
import Checkbox from '@material-ui/core/Checkbox';
import IconButton from '@material-ui/core/IconButton';
import Tooltip from '@material-ui/core/Tooltip';
import FormControlLabel from '@material-ui/core/FormControlLabel';
import Switch from '@material-ui/core/Switch';
import DeleteIcon from '@material-ui/icons/Delete';
import FilterListIcon from '@material-ui/icons/FilterList';

function createData(name, calories, fat, carbs, protein) {
    return {name, calories, fat, carbs, protein};
}

const rows = [
    createData('Cupcake', 305, 3.7, 67, 4.3),
    createData('Donut', 452, 25.0, 51, 4.9),
    createData('Eclair', 262, 16.0, 24, 6.0),
    createData('Frozen yoghurt', 159, 6.0, 24, 4.0),
    createData('Gingerbread', 356, 16.0, 49, 3.9),
    createData('Honeycomb', 408, 3.2, 87, 6.5),
    createData('Ice cream sandwich', 237, 9.0, 37, 4.3),
    createData('Jelly Bean', 375, 0.0, 94, 0.0),
    createData('KitKat', 518, 26.0, 65, 7.0),
    createData('Lollipop', 392, 0.2, 98, 0.0),
    createData('Marshmallow', 318, 0, 81, 2.0),
    createData('Nougat', 360, 19.0, 9, 37.0),
    createData('Oreo', 437, 18.0, 63, 4.0),
];

function descendingComparator(a, b, orderBy) {
    if (b[orderBy] < a[orderBy]) {
        return -1;
    }
    if (b[orderBy] > a[orderBy]) {
        return 1;
    }
    return 0;
}

function getComparator(order, orderBy) {
    return order === 'desc'
        ? (a, b) => descendingComparator(a, b, orderBy)
        : (a, b) => -descendingComparator(a, b, orderBy);
}

function stableSort(array, comparator) {
    const stabilizedThis = array.map((el, index) => [el, index]);
    stabilizedThis.sort((a, b) => {
        const order = comparator(a[0], b[0]);
        if (order !== 0) return order;
        return a[1] - b[1];
    });
    return stabilizedThis.map((el) => el[0]);
}

const headCells = [
    {id: 'name', numeric: false, disablePadding: true, label: 'Dessert (100g serving)'},
    {id: 'calories', numeric: true, disablePadding: false, label: 'Calories'},
    {id: 'fat', numeric: true, disablePadding: false, label: 'Fat (g)'},
    {id: 'carbs', numeric: true, disablePadding: false, label: 'Carbs (g)'},
    {id: 'protein', numeric: true, disablePadding: false, label: 'Protein (g)'},
];

function EnhancedTableHead(props) {
    const {classes, onSelectAllClick, order, orderBy, numSelected, rowCount, onRequestSort} = props;
    const createSortHandler = (property) => (event) => {
        onRequestSort(event, property);
    };

    return (
        <TableHead>
            <TableRow>
                <TableCell padding="checkbox">
                    <Checkbox
                        indeterminate={numSelected > 0 && numSelected < rowCount}
                        checked={rowCount > 0 && numSelected === rowCount}
                        onChange={onSelectAllClick}
                        inputProps={{'aria-label': 'select all desserts'}}
                    />
                </TableCell>
                {headCells.map((headCell) => (
                    <TableCell
                        key={headCell.id}
                        align={headCell.numeric ? 'right' : 'left'}
                        padding={headCell.disablePadding ? 'none' : 'default'}
                        sortDirection={orderBy === headCell.id ? order : false}
                    >
                        <TableSortLabel
                            active={orderBy === headCell.id}
                            direction={orderBy === headCell.id ? order : 'asc'}
                            onClick={createSortHandler(headCell.id)}
                        >
                            {headCell.label}
                            {orderBy === headCell.id ? (
                                <span className={classes.visuallyHidden}>
                  {order === 'desc' ? 'sorted descending' : 'sorted ascending'}
                </span>
                            ) : null}
                        </TableSortLabel>
                    </TableCell>
                ))}
            </TableRow>
        </TableHead>
    );
}

EnhancedTableHead.propTypes = {
    classes: PropTypes.object.isRequired,
    numSelected: PropTypes.number.isRequired,
    onRequestSort: PropTypes.func.isRequired,
    onSelectAllClick: PropTypes.func.isRequired,
    order: PropTypes.oneOf(['asc', 'desc']).isRequired,
    orderBy: PropTypes.string.isRequired,
    rowCount: PropTypes.number.isRequired,
};

const useToolbarStyles = makeStyles((theme) => ({
    root: {
        paddingLeft: theme.spacing(2),
        paddingRight: theme.spacing(1),
    },
    highlight:
        theme.palette.type === 'light'
            ? {
                color: theme.palette.secondary.main,
                backgroundColor: lighten(theme.palette.secondary.light, 0.85),
            }
            : {
                color: theme.palette.text.primary,
                backgroundColor: theme.palette.secondary.dark,
            },
    title: {
        flex: '1 1 100%',
    },
}));

const EnhancedTableToolbar = (props) => {
    const classes = useToolbarStyles();
    const {numSelected} = props;

    return (
        <Toolbar
            className={clsx(classes.root, {
                [classes.highlight]: numSelected > 0,
            })}
        >
            {numSelected > 0 ? (
                <Typography className={classes.title} color="inherit" variant="subtitle1" component="div">
                    {numSelected} selected
                </Typography>
            ) : (
                <Typography className={classes.title} variant="h6" id="tableTitle" component="div">
                    Nutrition
                </Typography>
            )}

            {numSelected > 0 ? (
                <Tooltip title="Delete">
                    <IconButton aria-label="delete">
                        <DeleteIcon/>
                    </IconButton>
                </Tooltip>
            ) : (
                <Tooltip title="Filter list">
                    <IconButton aria-label="filter list">
                        <FilterListIcon/>
                    </IconButton>
                </Tooltip>
            )}
        </Toolbar>
    );
};

EnhancedTableToolbar.propTypes = {
    numSelected: PropTypes.number.isRequired,
};

const useStyles = makeStyles((theme) => ({
    root: {
        width: '100%',
    },
    paper: {
        width: '100%',
        marginBottom: theme.spacing(2),
    },
    table: {
        minWidth: 750,
    },
    visuallyHidden: {
        border: 0,
        clip: 'rect(0 0 0 0)',
        height: 1,
        margin: -1,
        overflow: 'hidden',
        padding: 0,
        position: 'absolute',
        top: 20,
        width: 1,
    },
}));

export default function EnhancedTable() {
    const classes = useStyles();
    const [order, setOrder] = React.useState('asc');
    const [orderBy, setOrderBy] = React.useState('calories');
    const [selected, setSelected] = React.useState([]);
    const [page, setPage] = React.useState(0);
    const [dense, setDense] = React.useState(false);
    const [rowsPerPage, setRowsPerPage] = React.useState(5);

    const handleRequestSort = (event, property) => {
        const isAsc = orderBy === property && order === 'asc';
        setOrder(isAsc ? 'desc' : 'asc');
        setOrderBy(property);
    };

    const handleSelectAllClick = (event) => {
        if (event.target.checked) {
            const newSelecteds = rows.map((n) => n.name);
            setSelected(newSelecteds);
            return;
        }
        setSelected([]);
    };

    const handleClick = (event, name) => {
        const selectedIndex = selected.indexOf(name);
        let newSelected = [];

        if (selectedIndex === -1) {
            newSelected = newSelected.concat(selected, name);
        } else if (selectedIndex === 0) {
            newSelected = newSelected.concat(selected.slice(1));
        } else if (selectedIndex === selected.length - 1) {
            newSelected = newSelected.concat(selected.slice(0, -1));
        } else if (selectedIndex > 0) {
            newSelected = newSelected.concat(
                selected.slice(0, selectedIndex),
                selected.slice(selectedIndex + 1),
            );
        }

        setSelected(newSelected);
    };

    const handleChangePage = (event, newPage) => {
        setPage(newPage);
    };

    const handleChangeRowsPerPage = (event) => {
        setRowsPerPage(parseInt(event.target.value, 10));
        setPage(0);
    };

    const handleChangeDense = (event) => {
        setDense(event.target.checked);
    };

    const isSelected = (name) => selected.indexOf(name) !== -1;

    const emptyRows = rowsPerPage - Math.min(rowsPerPage, rows.length - page * rowsPerPage);

    return (
        <div className={classes.root}>
            <Paper className={classes.paper}>
                <EnhancedTableToolbar numSelected={selected.length}/>
                <TableContainer>
                    <Table
                        className={classes.table}
                        aria-labelledby="tableTitle"
                        size={dense ? 'small' : 'medium'}
                        aria-label="enhanced table"
                    >
                        <EnhancedTableHead
                            classes={classes}
                            numSelected={selected.length}
                            order={order}
                            orderBy={orderBy}
                            onSelectAllClick={handleSelectAllClick}
                            onRequestSort={handleRequestSort}
                            rowCount={rows.length}
                        />
                        <TableBody>
                            {stableSort(rows, getComparator(order, orderBy))
                                .slice(page * rowsPerPage, page * rowsPerPage + rowsPerPage)
                                .map((row, index) => {
                                    const isItemSelected = isSelected(row.name);
                                    const labelId = `enhanced-table-checkbox-${index}`;

                                    return (
                                        <TableRow
                                            hover
                                            onClick={(event) => handleClick(event, row.name)}
                                            role="checkbox"
                                            aria-checked={isItemSelected}
                                            tabIndex={-1}
                                            key={row.name}
                                            selected={isItemSelected}
                                        >
                                            <TableCell padding="checkbox">
                                                <Checkbox
                                                    checked={isItemSelected}
                                                    inputProps={{'aria-labelledby': labelId}}
                                                />
                                            </TableCell>
                                            <TableCell component="th" id={labelId} scope="row" padding="none">
                                                {row.name}
                                            </TableCell>
                                            <TableCell align="right">{row.calories}</TableCell>
                                            <TableCell align="right">{row.fat}</TableCell>
                                            <TableCell align="right">{row.carbs}</TableCell>
                                            <TableCell align="right">{row.protein}</TableCell>
                                        </TableRow>
                                    );
                                })}
                            {emptyRows > 0 && (
                                <TableRow style={{height: (dense ? 33 : 53) * emptyRows}}>
                                    <TableCell colSpan={6}/>
                                </TableRow>
                            )}
                        </TableBody>
                    </Table>
                </TableContainer>
                <TablePagination
                    rowsPerPageOptions={[5, 10, 25]}
                    component="div"
                    count={rows.length}
                    rowsPerPage={rowsPerPage}
                    page={page}
                    onChangePage={handleChangePage}
                    onChangeRowsPerPage={handleChangeRowsPerPage}
                />
            </Paper>
            <FormControlLabel
                control={<Switch checked={dense} onChange={handleChangeDense}/>}
                label="Dense padding"
            />
        </div>
    );
}

Источник