Develop Reference

How do I map over data from API in a collapsible table?

I don't know if the question captures what I had in my but I will explain below...
I fetched data from API and mapped into a collapsible table. Full details of the data should be embedded in EACH row such that onclick on each row, reveals the full details. Here's the code below
function Encounter() {
const [open2, setOpen2] = useState(false);
const [details, setDetails] = useState([]);
const getDetails = async () => {
try {
const fetch = await Axios.get(
"https://pshs3.herokuapp.com/all/encounter"
);
setDetails(fetch.data.data)
} catch (err) {
console.log(err);
}
};
useEffect(() => {
getDetails();
}, []);
return (
<Wrapper>
<Table stickyHeader aria-label="sticky table">
<TableHead>
<TableRow>
<TableCell/>
<TableCell >
Enrollment ID
</TableCell>
<TableCell >
Encounter
</TableCell>
<TableCell>
Facility Code
</TableCell>
</TableRow>
</TableHead>
<TableBody>
{details.map((detail, idx) => {
return (
<>
<TableRow sx={{ "& > *": { borderBottom: "unset" } }}>
<TableCell>
<IconButton
aria-label="expand row"
size="small"
onClick={() => setOpen(!open)}
>
{open ? (
<KeyboardArrowUpIcon />
) : (
<KeyboardArrowDownIcon />
)}
</IconButton>
</TableCell>
<TableCell key={idx}>
{detail.enrollment_id}
</TableCell>
<TableCell key={idx}>
{detail.encounter}
</TableCell>
<TableCell key={idx}>
{detail.faciity_code}
</TableCell>
</TableRow>
<TableRow>
<TableCell
style={{ paddingBottom: 0, paddingTop: 0 }}
colSpan={6}
>
<Collapse in={open} timeout="auto" unmountOnExit>
<Box sx={{ margin: 1 }}>
<Typography variant="h6" gutterBottom component="div">
Details
</Typography>
<Tooltip />
</Box>
</Collapse>
</TableCell>
</TableRow>
</>
);
})}
</TableBody>
</Table>
</Wrapper>
);
}
export default Encounter;
The problem I have is how to implement the open and setOpen state to individual row, also the Tooltip component(which is a the full table details from the API) to display full details of each row onclick which should correspond to the selected row in question.

Here are two solutions to the first problem.
1. Create a separate component for each <TableRow />
This component will have its own state and allows you to collapse/expand each row individually.
2. Use a dictionary for the open state
Since you have multiple (dynamic) rows, you can introduce a dictionary for the open state.
const [open, setOpen] = useState({});
For each row, you will use the open[idx] property to determine if the row should be "open"
<Collapse in={open[idx]} timeout="auto" unmountOnExit>
And in the <IconButton /> component, set the state based on the current row state.
<IconButton
aria-label="expand row"
size="small"
onClick={() => setOpen(current => ({ ...current, [idx]: !current[idx] }))}
>

Firstly add a variable in your details object:
const getDetails = async () => {
try {
const fetch = await Axios.get(
"https://pshs3.herokuapp.com/all/encounter"
);
const response = fetch.data.data;
response.map((elem) => elem.open = false)
setDetails(response)
} catch (err) {
console.log(err);
}
};
Then you can change the open variable for each element in details:
<IconButton
aria-label="expand row"
size="small"
onClick={() => detail.open = !detail.open)}
>
You might need to update the state, so change your onClick:
onClick={() => changeOpenStatus(idx))}
and the function:
const changeOpenStatus = (idx) => {
const newDetails = {...details}
newDetails[idx].open = !newDetails[idx].open;
setDetails(newDetails)
}

Selection Checkbox in React using Hooks

I have a problem selecting a single checkbox or multiple checkbox in a table in React. I'm using Material-UI. Please see my codesandbox here
CLICK HERE
I wanted to achieve something like this in the picture below:
<TableContainer className={classes.tableContainer}>
<Table>
<TableHead className={classes.tableHead}>
<TableRow>
<TableCell padding="checkbox">
<Checkbox
checked={false}
inputProps={{ "aria-label": "select all desserts" }}
/>
</TableCell>
{head.map((el) => (
<TableCell key={el} align="left">
{el}
</TableCell>
))}
</TableRow>
</TableHead>
<TableBody>
{body?.excluded_persons?.map((row, index) => (
<TableRow key={row.id}>
<TableCell padding="checkbox">
<Checkbox checked={true} />
</TableCell>
<TableCell align="left">{row.id}</TableCell>
<TableCell align="left">{row.name}</TableCell>
</TableRow>
))}
</TableBody>
</Table>
</TableContainer>

Seems you are just missing local component state to track the checked status of each checkbox, including the checkbox in the table header.
Here is the implementation for the AddedPersons component since it's more interesting because it has more than one row of data.
Create state to hold the selected persons state. Only add the additional local state, no need to duplicate the passed body prop data (this is anti-pattern anyway) nor add any derived state, i.e. is indeterminate or is all selected (also anti-pattern).
const [allSelected, setAllSelected] = React.useState(false);
const [selected, setSelected] = React.useState({});
Create handlers to toggle the states.
const toggleAllSelected = () => setAllSelected((t) => !t);
const toggleSelected = (id) => () => {
setSelected((selected) => ({
...selected,
[id]: !selected[id]
}));
};
Use a useEffect hook to toggle all the selected users when the allSelected state is updated.
React.useEffect(() => {
body.persons?.added_persons &&
setSelected(
body.persons.added_persons.reduce(
(selected, { id }) => ({
...selected,
[id]: allSelected
}),
{}
)
);
}, [allSelected, body]);
Compute the selected person count to determine if all users are selected manually or if it is "indeterminate".
const selectedCount = Object.values(selected).filter(Boolean).length;
const isAllSelected = selectedCount === body?.persons?.added_persons?.length;
const isIndeterminate =
selectedCount && selectedCount !== body?.persons?.added_persons?.length;
Attach all the state and callback handlers.
return (
<>
<TableContainer className={classes.tableContainer}>
<Table>
<TableHead className={classes.tableHead}>
<TableRow>
<TableCell colSpan={4}>{selectedCount} selected</TableCell>
</TableRow>
<TableRow>
<TableCell padding="checkbox">
<Checkbox
checked={allSelected || isAllSelected} // <-- all selected
onChange={toggleAllSelected} // <-- toggle state
indeterminate={isIndeterminate} // <-- some selected
inputProps={{ "aria-label": "select all desserts" }}
/>
</TableCell>
...
</TableRow>
</TableHead>
<TableBody>
{body?.persons?.added_persons?.map((row, index) => (
<TableRow key={row.id}>
<TableCell padding="checkbox">
<Checkbox
checked={selected[row.id] || allSelected} // <-- is selected
onChange={toggleSelected(row.id)} // <-- toggle state
/>
</TableCell>
<TableCell align="left">{row.id}</TableCell>
<TableCell align="left">{row.name}</TableCell>
</TableRow>
))}
</TableBody>
</Table>
</TableContainer>
</>
);
Update
Seems there was a bug in my first implementation that disallowed manually deselecting people while the select all checkbox was checked. The fix is to move the logic in the useEffect into the toggleAllSelected handler and use the onChange event to toggle all the correct states. Also to add a check to toggleSelected to deselect "select all" when any person checkboxes have been deselected.
const [allSelected, setAllSelected] = React.useState(false);
const [selected, setSelected] = React.useState({});
const toggleAllSelected = (e) => {
const { checked } = e.target;
setAllSelected(checked);
body?.persons?.added_persons &&
setSelected(
body.persons.added_persons.reduce(
(selected, { id }) => ({
...selected,
[id]: checked
}),
{}
)
);
};
const toggleSelected = (id) => (e) => {
if (!e.target.checked) {
setAllSelected(false);
}
setSelected((selected) => ({
...selected,
[id]: !selected[id]
}));
};
Note: Since both AddedPersons and ExcludedPersons components are basically the same component, i.e. it's a table with same headers and row rendering and selected state, you should refactor these into a single table component and just pass in the row data that is different. This would make your code more DRY.

I have updated your added person table as below,
please note that I am using the component state to update the table state,
const AddedPersons = ({ classes, head, body }) => {
const [addedPersons, setAddedPersons] = useState(
body?.persons?.added_persons.map((person) => ({
...person,
checked: false
}))
);
const [isAllSelected, setAllSelected] = useState(false);
const [isIndeterminate, setIndeterminate] = useState(false);
const onSelectAll = (event) => {
setAllSelected(event.target.checked);
setIndeterminate(false);
setAddedPersons(
addedPersons.map((person) => ({
...person,
checked: event.target.checked
}))
);
};
const onSelect = (event) => {
const index = addedPersons.findIndex(
(person) => person.id === event.target.name
);
// shallow clone
const updatedArray = [...addedPersons];
updatedArray[index].checked = event.target.checked;
setAddedPersons(updatedArray);
// change all select checkbox
if (updatedArray.every((person) => person.checked)) {
setAllSelected(true);
setIndeterminate(false);
} else if (updatedArray.every((person) => !person.checked)) {
setAllSelected(false);
setIndeterminate(false);
} else {
setIndeterminate(true);
}
};
const numSelected = addedPersons.reduce((acc, curr) => {
if (curr.checked) return acc + 1;
return acc;
}, 0);
return (
<>
<Toolbar>
{numSelected > 0 ? (
<Typography color="inherit" variant="subtitle1" component="div">
{numSelected} selected
</Typography>
) : (
<Typography variant="h6" id="tableTitle" component="div">
Added Persons
</Typography>
)}
</Toolbar>
<TableContainer className={classes.tableContainer}>
<Table>
<TableHead className={classes.tableHead}>
<TableRow>
<TableCell padding="checkbox">
<Checkbox
checked={isAllSelected}
inputProps={{ "aria-label": "select all desserts" }}
onChange={onSelectAll}
indeterminate={isIndeterminate}
/>
</TableCell>
{head.map((el) => (
<TableCell key={el} align="left">
{el}
</TableCell>
))}
</TableRow>
</TableHead>
<TableBody>
{addedPersons?.map((row, index) => (
<TableRow key={row.id}>
<TableCell padding="checkbox">
<Checkbox
checked={row.checked}
onChange={onSelect}
name={row.id}
/>
</TableCell>
<TableCell align="left">{row.id}</TableCell>
<TableCell align="left">{row.name}</TableCell>
</TableRow>
))}
</TableBody>
</Table>
</TableContainer>
</>
);
};
export default AddedPersons;
Please refer to this for a working example: https://codesandbox.io/s/redux-react-forked-cuy51

Render data as a functional component with React.js and Material-UI

I have a problem with the management of the data, when i try to render some data from the pokemon api my table render multiple times the titles, i tried to move only the data to a different component but not luck.
How can i fix this?
API CAll
export const PokemonApi = () => {
const [poke, setPoke] = useState([]);
const data = () => {
axios.get('https://pokeapi.co/api/v2/pokemon?limit=10&offset=20').then(( response ) => {
setPoke(response.data.results);
console.log(response.data.results);
})
.catch( err => {
console.log(err);
})
}
useEffect(() => {
data()
}, []);
return (
<>
{
poke.map(( info, name ) => {
return <Lista key={ name } info={ info } />
})
}
</>
)
}
component where I try to render
export const Lista = (props) => {
const classes = useStyles();
return (
<div>
<Container maxWidth="md">
<TableContainer component={Paper}>
<Table className={ classes.table } size="small" aria-label="a dense table">
<TableHead>
<TableRow>
<TableCell>Name</TableCell>
<TableCell align="right">URL</TableCell>
</TableRow>
</TableHead>
<TableBody>
<TableRow key={ props.info.name }>
<TableCell component="th" scope="row">
{ props.info.name }
</TableCell>
<TableCell align="right">{ props.info.url }</TableCell>
</TableRow>
</TableBody>
</Table>
</TableContainer>
</Container>
</div>
)
}
This is the page where i render the table
import React from 'react'
import { PokemonApi } from '../api/PokemonApi'
export const Pokes = () => {
return (
<>
<PokemonApi />
</>
)
}
And here is the table.
I hope anyone can help me!

As your code is written, you are not rendering one table with a row for each line. You are creating one Lista par record, you have as many tables as pokemon.
What you are looking to achieve is more like :
function PokemonRow(props) {
return (
<TableRow key={ props.info.name }>
<TableCell component="th" scope="row">
{ props.info.name }
</TableCell>
<TableCell align="right">{ props.info.url }</TableCell>
</TableRow>
)
}
export const PokemonTable() {
const classes = useStyles();
const [poke, setPoke] = useState([]);
const data = () => {
axios.get('https://pokeapi.co/api/v2/pokemon?limit=10&offset=20').then(( response ) => {
setPoke(response.data.results);
console.log(response.data.results);
})
.catch( err => {
console.log(err);
})
}
useEffect(() => {
data()
}, []);
return (
<div>
<Container maxWidth="md">
<TableContainer component={Paper}>
<Table className={ classes.table } size="small" aria-label="a dense table">
<TableHead>
<TableRow>
<TableCell>Name</TableCell>
<TableCell align="right">URL</TableCell>
</TableRow>
</TableHead>
<TableBody>
{poke.map(infos => <PokemonRow info={infos}/>)}
</TableBody>
</Table>
</TableContainer>
</Container>
</div>
)
}

Why onChnage is not a function when a functionalities is migrated to a component for better readability

I'm trying to migrate a specific functionality to a component so I can have better readability in my file.
The functionality is this
display: (filterList, onChange, index, column) => {
const optionValues = preparedSites.reduce((acc, val) => {
const exists = acc.find(
country => country.code === val[3].code,
);
if (!exists) acc.push(val[3]);
return acc;
}, []);
return (
<FormControl>
<InputLabel htmlFor="select-multiple-chip">
Country
</InputLabel>
<Select
value={filterList[index]}
renderValue={selected => selected.join(' ')}
onChange={event => {
onChange([event.target.value], index, column);
}}
>
{optionValues.map(item => (
<MenuItem key={item.code} value={item.code}>
<Flag siteCountry={item} />
<ListItemText primary={item.code} />
</MenuItem>
))}
</Select>
</FormControl>
);
},
What I want to get is that
display: (filterList, onChange, index, column) => <Compnent filterList={filterList} onChange={onChange} index={index} column={column} />
I tried to make it like this but getting onChange is not a function
const Component = (filterList, onChange, index, column) => {
const optionValues = preparedSites.reduce((acc, val) => {
const exists = acc.find(country => country.code === val[3].code);
if (!exists) acc.push(val[3]);
return acc;
}, []);
return (
<FormControl>
<InputLabel htmlFor="select-multiple-chip">Country</InputLabel>
<Select
value={filterList[index]}
renderValue={selected => selected.join(' ')}
onChange={event => {
onChange([event.target.value], index, column);
}}
>
{optionValues.map(item => (
<MenuItem key={item.code} value={item.code}>
<Flag siteCountry={item} />
<ListItemText primary={item.code} />
</MenuItem>
))}
</Select>
</FormControl>
);
};
I would like to understand what wrong.

I decided to answer my own question as was a simple issue.
Probably do tiring of last pre-Christmas urgency deliveries :(
I forgot to add {} in my component:
Before
const Component = (filterList, onChange, index, column) => {}
After
const Component = ({filterList, onChange, index, column}) => {}
Now all seems to work correctly.

Embedding a Menu inside a TableCell with Material-UI

I would like to implement Google's Material UI Menu Item inside of a TableCell, as shown in their docs here, as seen below:
Here is my current approach:
import React from 'react';
import PropTypes from 'prop-types';
import { withStyles } from '#material-ui/core/styles';
import {
Grid,
IconButton,
Table,
TableBody,
TableCell,
TableHead,
TableRow,
Paper,
Menu,
MenuItem,
Button,
} from '#material-ui/core';
import { ExpandLess, ExpandMore } from '#material-ui/icons';
const styles = theme => ({});
const Questions = ({ data, classes, openMenu, anchorEls, handleClose }) => {
const CustomTableCell = withStyles(theme => ({
head: {
backgroundColor: theme.palette.common.black,
color: theme.palette.common.white,
},
body: {
fontSize: 14,
},
}))(TableCell);
const formatData = rawData => Object.keys(rawData).map(key => rawData[key]);
const n = { key: 'hi', rating: 55, text: 'wassup' };
return (
<Grid container alignItems={'center'} direction={'column'} spacing={8}>
<Paper className={classes.root}>
<Button
key="close"
aria-label="Close"
color="inherit"
className={classes.close}
onClick={e => openMenu('dude', e)}
>
<ExpandMore />
</Button>
<Menu
id={`dude`}
key="menu"
anchorEl={anchorEls.dude}
open={Boolean(anchorEls.dude)}
onClose={e => handleClose('dude', e)}
>
<MenuItem onClick={e => handleClose('dude', e)}>Delete</MenuItem>
<MenuItem onClick={e => handleClose('dude', e)}>Flag</MenuItem>
<MenuItem onClick={e => handleClose('dude', e)}>
Mark Answered
</MenuItem>
</Menu>
<Table className={classes.table}>
<TableHead>
<TableRow>
<CustomTableCell>Question</CustomTableCell>
<CustomTableCell numeric>Rating</CustomTableCell>
<CustomTableCell>Upvote</CustomTableCell>
<CustomTableCell>Downvote</CustomTableCell>
<CustomTableCell>Options</CustomTableCell>
</TableRow>
</TableHead>
<TableBody>
<TableRow className={classes.row} key={n.key}>
<CustomTableCell component="th" scope="row">
{n.text}
</CustomTableCell>
<CustomTableCell numeric>{n.rating}</CustomTableCell>
<CustomTableCell>
<IconButton
key="close"
aria-label="Close"
color="inherit"
className={classes.close}
onClick={() => ''}
>
<ExpandLess />
</IconButton>
</CustomTableCell>
<CustomTableCell>
<IconButton
key="close"
aria-label="Close"
color="inherit"
className={classes.close}
onClick={() => ''}
>
<ExpandMore />
</IconButton>
</CustomTableCell>
<CustomTableCell>
<Button
key="close"
aria-label="Close"
color="inherit"
className={classes.close}
onClick={e => openMenu(n.key, e)}
>
<ExpandMore />
</Button>
<Menu
id={`simple-menu-${n.key}`}
key="menu"
anchorEl={anchorEls[n.key]}
open={Boolean(anchorEls[n.key])}
onClose={e => handleClose(n.key, e)}
>
<MenuItem onClick={e => handleClose(n.key, e)}>
Delete
</MenuItem>
<MenuItem onClick={e => handleClose(n.key, e)}>dude</MenuItem>
<MenuItem onClick={e => handleClose(n.key, e)}>choc</MenuItem>
</Menu>
</CustomTableCell>
</TableRow>
</TableBody>
</Table>
</Paper>
</Grid>
);
};
Questions.propTypes = {
data: PropTypes.object.isRequired,
anchorEls: PropTypes.object.isRequired,
classes: PropTypes.object.isRequired,
openMenu: PropTypes.func.isRequired,
handleClose: PropTypes.func.isRequired,
};
Questions.defaultProps = {};
export default withStyles(styles)(Questions);
This is working, however the menu is not appearing in the correct place, even when passing in the related event e. I put in a dummy element before the table to test whether or not the table was affecting the menu, and found that the dummy worked just fine, as you can see in the screenshot below.
And the improperly placed menu from the button in the table:
Any ideas on what could be happening? Obviously, the context and anchorEl isn't correctly identifying the location on the page, but not sure what to do to combat that.

Problem in your openMenu function.You need to set the event target in your openMenu function, and set null in handleClose function. I am giving here a little example which may help you:
class DemoList extends Component {
constructor(props) {
super(props);
this.state = {
data: [],
anchorEls: []
}
}
handleActionClick = (id, event) => {
let { anchorEls } = this.state;
anchorEls[id] = event.target;
this.setState({ anchorEls });
}
handleActionClose = (id, event) => {
let { anchorEls } = this.state;
anchorEls[id] = null;
this.setState({ anchorEls });
}
render() {
let { classes } = this.props;
const { data, anchorEls } = this.state;
return (
<Paper className="main">
<Table className={classes.table} aria-label="simple table">
<TableHead>
<TableRow>
<TableCell>Dessert (100g serving)</TableCell>
<TableCell align="right">Calories</TableCell>
<TableCell align="right">Fat (g)</TableCell>
<TableCell align="right">Carbs (g)</TableCell>
<TableCell align="right">Action</TableCell>
</TableRow>
</TableHead>
<TableBody>
{data.map(row => (
<TableRow key={row.id}>
<TableCell component="th" scope="row"> {row.name} </TableCell>
<TableCell align="right">{row.calories}</TableCell>
<TableCell align="right">{row.fat}</TableCell>
<TableCell align="right">{row.carbs}</TableCell>
<TableCell align="right">
<IconButton
aria-label="more"
aria-controls="long-menu"
aria-haspopup="true"
onClick={e => this.handleActionClick(row.id, e)}
>
<MoreVert />
</IconButton>
<Menu
id={row.id}
anchorEl={anchorEls[row.id]}
keepMounted
open={Boolean(this.state.anchorEls[row.id])}
onClose={e => this.handleActionClose(row.id, e)}
>
<MenuItem onClick={e => this.handleActionClose(row.id, e)}> View Details </MenuItem>
<MenuItem onClick={e => this.handleActionClose(row.id, e)}> Assign </MenuItem>
</Menu>
</TableCell>
</TableRow>
))}
</TableBody>
</Table>
</Paper>
)
}
}

After hacking away I found that removing the CustomTableCell declaration and changing all the CustomTableCells to normal TableCells resolved the problem. 😫 Not sure why that would fix it given that the CustomTableCell code was pulled straight from the Demos page.