Add ward-level dropdown in the checkout page

[htdat]

Ward in Vietnamese: xã, phường, thị trấn.
It may be equal to county in US?

Should support:

• Checkout page
• Backend (order editor page)
• Support shipping zones?
• Postcodes

Ref for postcodes:

• https://dtexpress.com.vn/ma-vung-postcode-zipcode-6-so-moi-cua-viet-nam/
• https://nhanh.vn/cap-nhat-moi-nhat-ve-ma-zip-postal-code-cua-63-tinhthanh-viet-nam-2020-n58342.html
• http://mabuuchinh.vn/default.aspx?page=newsdetail&newsid=10049

Sources:

• http://dmdc.ngsp.gov.vn/WebPortal/Mining?CategoryId=f48484d1-0e43-40b7-946c-395f81d74392
• http://dmdc.ngsp.gov.vn/WebPortal/Mining?CategoryId=85e7cbfa-40ed-4379-b010-943a31e5c898

Other plugins offering the similar feature:

• https://vi.wordpress.org/plugins/friendstore-for-woocommerce/
• https://wordpress.org/plugins/woo-vietnam-checkout/

Requests:

• https://wordpress.org/support/topic/khong-co-field-phuong-xa/

[daohoangson]

I can provide and maintain up to date dataset for this, with post codes (covers about 95% of all administrative units).

[htdat]

That should be nice. Do you have an example for this dataset? I am very interested in postcodes too as that may help to integrate shipping zones.

[daohoangson]

Something like this https://github.com/daohoangson/dvhcvn/blob/master/data/sorted.json

I have a WIP PR for postcode here daohoangson/dvhcvn#7