Created
July 13, 2021 20:09
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Example of a custom, typescript, sanity input that allows the user to select from a list of values retrieved from an external API
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| import * as React from "react"; | |
| import FormField from 'part:@sanity/components/formfields/default' | |
| import SearchableSelect from 'part:@sanity/components/selects/searchable' | |
| import {PatchEvent, set, unset} from 'part:@sanity/form-builder/patch-event' | |
| const externalAPI = async (query: string) => { | |
| return ["foo", "bar"] | |
| } | |
| export const MeditationInput: React.FC<Props> = (props) => { | |
| const { | |
| level, | |
| markers, | |
| onBlur, | |
| onChange, | |
| onFocus, | |
| readOnly, | |
| type, | |
| value, | |
| } = props; | |
| const [lastQuery, setLastQuery] = React.useState<string>(); | |
| const [inputValue, setInputValue] = React.useState<string>(); | |
| const [fetching, setFetching] = React.useState<boolean>(false); | |
| const [results, setResults] = React.useState<Array<Result>>(); | |
| const inputRef = React.createRef<HTMLInputElement>(); | |
| const handleOpen = React.useCallback(() => { | |
| search(''); | |
| }, []) | |
| const handleFocus = React.useCallback(() => { | |
| if (lastQuery) { | |
| search(lastQuery); | |
| setInputValue(lastQuery); | |
| } | |
| onFocus?.(); | |
| }, [lastQuery]) | |
| const handleBlur = React.useCallback(() => { | |
| setInputValue(''); | |
| onBlur?.(); | |
| }, []) | |
| const handleSearch = React.useCallback((query: string) => { | |
| search(query) | |
| }, []) | |
| const handleChange = React.useCallback((hit) => { | |
| onChange?.(PatchEvent.from(set(hit))); | |
| }, [onChange]) | |
| const handleClear = React.useCallback(() => { | |
| onChange?.(PatchEvent.from(unset())) | |
| }, [onChange]) | |
| const search = React.useCallback(async (query: string) => { | |
| setLastQuery(query); | |
| setInputValue(query); | |
| setFetching(true); | |
| const res = await externalAPI(query); | |
| setFetching(false); | |
| setResults(res); | |
| }, [lastQuery]) | |
| const validation = markers.filter(marker => marker.type === 'validation') | |
| const errors = validation.filter(marker => marker.level === 'error') | |
| return ( | |
| <FormField markers={markers} label={type.title} level={level} description={type.description}> | |
| <SearchableSelect | |
| placeholder="Type to search…" | |
| title={inputValue} | |
| customValidity={errors.length > 0 ? errors[0].item.message : ''} | |
| onOpen={handleOpen} | |
| onFocus={handleFocus} | |
| onBlur={handleBlur} | |
| onSearch={handleSearch} | |
| onChange={handleChange} | |
| onClear={handleClear} | |
| openItemElement={(o) => <p>{o}</p>} | |
| value={value} | |
| inputValue={inputValue === undefined ? value : inputValue} | |
| renderItem={(v) => <p>{v}</p>} | |
| isLoading={fetching} | |
| items={results} | |
| ref={inputRef} | |
| readOnly={readOnly} | |
| /> | |
| </FormField> | |
| ) | |
| } | |
| type Props = { | |
| level: number; | |
| markers: Array<Marker>; | |
| readOnly?: boolean | |
| type: { | |
| description: string | |
| title: string | |
| } | |
| value?: undefined | |
| onBlur?: () => void | |
| onChange?: (event: any) => void | |
| onFocus?: () => void | |
| } | |
| type Marker = { | |
| type: string | |
| level: string | |
| item: { | |
| message: string | |
| } | |
| } | |
| type Result = { | |
| } | |
| export default MeditationInput; |
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