Magento2: Add date-from validation for dob (date of birth) field in customer creation

Question

I want to limit the dob field in account creation form to be not less than 01/01/1900.

I thought 2 way: - limit the calendar widget (but maybe someone could input the date directly) - add a validation to the dob field

The first way seems not to be secure, so i decide to follow the second one.

I found there is a validation class "validate-date-range" which seems to do what i need, but i can't find how to use it (how can i pass the initial date parameter?)

Moreover, I don't know how to add the validation to the dob field in the account create form.

I try to modify the file vendor/magento/module-customer/view/base/ui_component/customer_form.xml but i can't see change in the frontend code.

Any help?!?

• Elavarasan: You can simply use javascript to compare date. If entered date is less than 1/1/1990 then return error, some thing like, if( startTime < endTime){ alert("start time is lesser"); }
• hippoglollum: Thank you @Elavarasan for you comment, but the problem is not the algorithm for the check but how/where to add a new validation for that field.

Answer 1

Then you need to override the block file and make changes for the validation.

vendor/magento/module-customer/Block/Widget/Dob.php

....
public function getHtmlExtraParams()
{
 $validators = [];
 if ($this->isRequired()) {
 $validators['required'] = true;
 }
 $validators['validate-date'] = [
 'dateFormat' => $this->getDateFormat()
 ];
 return 'data-validate="' . $this->_escaper->escapeHtml(json_encode($validators)) . '"';
}
....

You can add your custom validation in above function.