how to add custom customer attribute's field to the checkout page?

[davidztabadaa2]

It should also be persisted on guest checkout, bellow email field and displayed in admin checkout.

I've found some tutorials about customer_address_entity's custom attributes,but I need to add attribute to customer_entity.

[Gaurav_Jain02]

Hello @davidztabadaa2 

https://github.com/danielmagestore/magento2-customer-attributes
https://github.com/Technogex/customer-attribute

Did you try this module?

[roma28632gec88]

Add the field to layout. Add a JS mixin to modify data submission. Load your mixin. Add the field to address model. Access the value of the custom field on server side.