After reading the article linked here, I incorporated it into my app.
My next step is to include a date validation to ensure that the person is over 18 years old.
I am currently struggling with understanding where and how to incorporate the parse and format methods required by validate.js. I have successfully implemented the rest of the validation following the instructions in the article for my react native app.
For ensuring that users are above 18 years old, I rely on the functionality provided by moment.js.
import moment from 'moment';
export const isOverEighteen = (date) => {
var eighteenYearsAgo = moment().subtract(18, "years");
var birthday = moment(date);
if (!birthday.isValid()) {
return "invalid date";
}
else if (!eighteenYearsAgo.isAfter(birthday)) {
return "To successfully open an account you have to be at least 18 years old.";
}
return;
};
This function handles the validation of a user's age based on their birthdate. To implement this in a component, simply import and use the function. If no errors are returned, the user is confirmed to be over 18 years old; otherwise, an error message will be generated.
EDIT: Implementation involves creating a utils folder with a file named validateAge.js containing the aforementioned code snippet. Then, within the form where age verification is required, import the function as follows:
import { isOverEighteen } from 'here-goes-your-path/utils/validateAge';
To assign errors for the dateOfBirth field (or any relevant property), utilize the function in this manner:
errors.dateOfBirth = isOverEighteen(values.dateOfBirth);
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