hello , 

iam new to odoo 

at past i was develop on ruby rails framework 

on ruby i was able to create dynamic subdomain using routs 

for ex :

i have app on domain https://appdomain.com 

i was able to create subdomain for every user dynamic 

ex:

https://username.appdomain.com 

this domain was linked for example to 

https://appdomain.com/users/username 

but it opens and shows as  >>  https://username.appdomain.com

how to make this possible in odoo 

more information in video 

https://www.youtube.com/watch?v=O2bBcTPj0sI

thank you