Date of Birth for shoppers

[aftertaf]

Hi,
Does anyone know a working way (core hack, override, whatever,...) to get joomla! or Virtuemart to store the date of birth of shoppers?
I've searched the forum and found one thread without a solution as such (couldn't get it to work), and can't find any other documentation, example or use-case that anyone has described...
Using J3.8.12 and latest vm 3.2.14..
any pointers would be really appreciated, as i have so little time to dig around at the moment, so if anyone has already done something along these lines, would be great so see how you did it.
thx

[Studio 42]

You can create a userfield date plugin and only show this in the BT address

[aftertaf]

ok, but is there a way to make it actually be a date picker, not just a text field ?
I specified type 'date' when i created the new field, but in the frontend i can type 1975/01/01 or 01/01/1975 and neither get stored when i save the user.

I can add one in Joomla, and make it required, but I can't make this field then appear in the user profile for VM, or during registration process.
Isn't there a way to link Joomla and VM user fields ?

[aftertaf]

i've also tried the datepicker (age verification) field type : impossible to enter a value that the system actually accepts, and by making it mandatory i can't create a new account. So something is not working right here.
Would be much easier to just make any Joomla userfields that are flagged as mandatory appear in the VM registration/user maintenance page in same manner as e mail, username, etc...

[Studio 42]

I already answered you.
You need to use a VM userfield plugin, so you can write your own code

[aftertaf]

i'm a user with some overriding experience : i don't have the knowledge to do as you say, or the time to learn at the moment...
Anyway, i found a workaround, using the system user profile plugin, i can ask for DoB to be displayed, albeit on the joomla user profile page and not the virtuemart one.
this is enough for me to do what I need this for.