How to use react-admin's ChipField if there is no field/column name?

Question

I have a CheckboxGroupInput field like this:

   <CheckboxGroupInput source="fruits" choices={[
        { 'name': 'apples' },
        { 'name': 'pears' }
    ]} optionValue='name'/>

which produces json likes this for the fruits field when the user selects both options:

  'fruits': ['apples','pears']

I want to display it in a List using ChipField which requires a source which I don't have, because the json is a plain string array.

source would be "name" if json looked like fruits:[{'name':'apples'}, {'name':'pears'}]

           <ArrayField source='fruits'>
                <SingleFieldList>
                    <ChipField source='???' />  
                </SingleFieldList>
            </ArrayField>

How can I show the contents of a plain string array with ChipField OR how do I tell CheckboxGroupInput to produce an object array instead of a string array?

Answer 1

It is always a good idea to look at demo code. I managed to create a custom component called SimpleChipField by modifying a custom ChipField from the react-admin demo code. It shows the entire record as label.

import React from 'react';
import Chip from '@material-ui/core/Chip';
import { makeStyles } from '@material-ui/core';

const useStyles = makeStyles({
    main: {
        display: 'flex',
        flexWrap: 'wrap',
        marginTop: -8,
        marginBottom: -8,
    },
    chip: { margin: 4 },
});

const SimpleChipField = ({ record }) => {
    const classes = useStyles();

    return record ? (
        <span className={classes.main}>
            <Chip
                key={record}
                className={classes.chip}
                label={record}
            />
        </span>
    ) : null;
};

SimpleChipField.defaultProps = {
    addLabel: true,
};

export default SimpleChipField;

To use it, just put it instead of the regular ChipField.

    <ArrayField source="fruits">
        <SingleFieldList>
            <SimpleChipField />
        </SingleFieldList>
    </ArrayField>