File size: 1,160 Bytes
1e92f2d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 |
// @flow
import * as React from "react";
/**
* Returns an object of fields with values set based on the touched and error values
* If a value is both touched and has a non-empty error string it is returned as the fields value
*/
function touchedErrors(
touched: { [string]: boolean } = {},
errors: { [string]: string } = {},
fields: Array<string> = []
): { [string]: string } {
return fields.reduce(
(acc, cur) =>
Object.assign(acc, {
[cur]: touched && touched[cur] && errors ? errors[cur] : "",
}),
{}
);
}
/**
* A HOC that modifies the errors propso that it only returns errors if the the field
* has also been touched
* First takes an array of the field names, followed by the component
*/
function withTouchedErrors(fields: Array<string> = []) {
return function withComponent<A: { +touched?: *, +errors?: * }>(
Component: React.ComponentType<A>
): React.ComponentType<A> {
return function WithTouchedErrors(props: A) {
const errors = touchedErrors(props.touched, props.errors, fields);
return <Component {...props} errors={errors} />;
};
};
}
export default withTouchedErrors;
|