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CareUI: Adds a higher-order
Form component (not used anywhere) (#4633)
* remove `reducerProps` to make things simpler * Implements `Form` HOC and `FormContext` * removes unused reducer props from search input * RequiredFieldValidator to support custom message * consume form context and resolve props internally * rename 'props' to 'field' to strictly break if incorrect migration * migrate existing fields * fix month form field
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| import { isEmpty, omitBy } from "lodash"; | ||
| import { useEffect, useReducer, useState } from "react"; | ||
| import { classNames } from "../../Utils/utils"; | ||
| import { Cancel, Submit } from "../Common/components/ButtonV2"; | ||
| import { FieldValidator } from "./FieldValidators"; | ||
| import { FormContext, FormContextValue } from "./FormContext"; | ||
| import { FieldChangeEvent } from "./FormFields/Utils"; | ||
| import { FormDetails, FormErrors, formReducer, FormReducer } from "./Utils"; | ||
|
|
||
| type Props<T extends FormDetails> = { | ||
| context: FormContext<T>; | ||
| className?: string; | ||
| defaults: T; | ||
| asyncGetDefaults?: (() => Promise<T>) | false; | ||
| onlyChild?: boolean; | ||
| validate?: (form: T) => FormErrors<T>; | ||
| onSubmit: (form: T) => Promise<FormErrors<T> | void>; | ||
| onCancel?: () => void; | ||
| noPadding?: true; | ||
| disabled?: boolean; | ||
| submitLabel?: string; | ||
| cancelLabel?: string; | ||
| children: (props: FormContextValue<T>) => React.ReactNode; | ||
| }; | ||
|
|
||
| const Form = <T extends FormDetails>({ | ||
| asyncGetDefaults, | ||
| validate, | ||
| ...props | ||
| }: Props<T>) => { | ||
| const initial = { form: props.defaults, errors: {} }; | ||
| const [isLoading, setIsLoading] = useState(!!asyncGetDefaults); | ||
| const [state, dispatch] = useReducer<FormReducer<T>>(formReducer, initial); | ||
|
|
||
| useEffect(() => { | ||
| if (!asyncGetDefaults) return; | ||
|
|
||
| asyncGetDefaults().then((form) => { | ||
| dispatch({ type: "set_form", form }); | ||
| setIsLoading(false); | ||
| }); | ||
| }, [asyncGetDefaults]); | ||
|
|
||
| const handleSubmit = async (event: React.FormEvent<HTMLFormElement>) => { | ||
| event.preventDefault(); | ||
|
|
||
| if (validate) { | ||
| const errors = omitBy(validate(state.form), isEmpty) as FormErrors<T>; | ||
|
|
||
| if (Object.keys(errors).length) { | ||
| dispatch({ type: "set_errors", errors }); | ||
| return; | ||
| } | ||
| } | ||
|
|
||
| const errors = await props.onSubmit(state.form); | ||
| if (errors) { | ||
| dispatch({ | ||
| type: "set_errors", | ||
| errors: { ...state.errors, ...errors }, | ||
| }); | ||
| } | ||
| }; | ||
|
|
||
| const { Provider, Consumer } = props.context; | ||
| const disabled = isLoading || props.disabled; | ||
|
|
||
| return ( | ||
| <form | ||
| onSubmit={handleSubmit} | ||
| className={classNames( | ||
| "bg-white rounded w-full max-w-3xl mx-auto", | ||
| !props.noPadding && "px-8 md:px-16 py-5 md:py-11", | ||
| props.className | ||
| )} | ||
| noValidate | ||
| > | ||
| <Provider | ||
| value={(name: keyof T, validate?: FieldValidator<T[keyof T]>) => { | ||
| return { | ||
| name, | ||
| id: name, | ||
| onChange: ({ name, value }: FieldChangeEvent<T[keyof T]>) => | ||
| dispatch({ | ||
| type: "set_field", | ||
| name, | ||
| value, | ||
| error: validate && validate(value), | ||
| }), | ||
| value: state.form[name], | ||
| error: state.errors[name], | ||
| disabled, | ||
| }; | ||
| }} | ||
| > | ||
| {props.onlyChild ? ( | ||
| <Consumer>{props.children}</Consumer> | ||
| ) : ( | ||
| <> | ||
| <div className="my-6 flex flex-col gap-4"> | ||
| <Consumer>{props.children}</Consumer> | ||
| </div> | ||
| <div className="flex justify-end gap-2"> | ||
| <Cancel | ||
| className="w-full md:w-auto" | ||
| onClick={props.onCancel} | ||
| label={props.cancelLabel ?? "Cancel"} | ||
| /> | ||
| <Submit | ||
| type="submit" | ||
| className="w-full md:w-auto" | ||
| disabled={disabled} | ||
| label={props.submitLabel ?? "Submit"} | ||
| /> | ||
| </div> | ||
| </> | ||
| )} | ||
| </Provider> | ||
| </form> | ||
| ); | ||
| }; | ||
|
|
||
| export default Form; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,19 @@ | ||
| import { Context, createContext } from "react"; | ||
| import { FieldError, FieldValidator } from "./FieldValidators"; | ||
| import { FormDetails } from "./Utils"; | ||
|
|
||
| export type FormContextValue<T extends FormDetails> = ( | ||
| name: keyof T, | ||
| validate?: FieldValidator<T[keyof T]> | ||
| ) => { | ||
| id: keyof T; | ||
| name: keyof T; | ||
| onChange: any; | ||
| value: any; | ||
| error: FieldError | undefined; | ||
| }; | ||
|
|
||
| export type FormContext<T extends FormDetails> = Context<FormContextValue<T>>; | ||
|
|
||
| export const createFormContext = <T extends FormDetails>() => | ||
| createContext<FormContextValue<T>>(undefined as any); |
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