Help me to solve the problem that I have been facing in firebase

Question

I am new to the flutter firebase. I have a user collection and the doctor collection. It the one user send the some data to the particular doctor in the doctor collection, then how to update in the doctor field

Answer 1

There is a certain dude on YouTube called TheNetNinja who has an entire playlist about this:

https://www.youtube.com/playlist?list=PL4cUxeGkcC9j--TKIdkb3ISfRbJeJYQwC