chapter 2, problem when changed the database settings about djangoforprofessionals

[wsvincent]

Hi @YashMarmat , Thank you for posting your solution here. I updated that very recently in the book and you can see it in the code base but hadn't been able to respond to your PR. Docker made this breaking change very recently, a frustrating thing. Glad you sorted it out! -Will

[samsime]

finally !!!! it worked
after spending two days with this issue (frustating hours of my life) i finally resolved this issue,
if you are facing it too then put the following code in your docker-compose.yml file (just below image:postgres11).

environment:

• "POSTGRES_HOST_AUTH_METHOD=trust"

Note: after applying the above code the local host server can still show the same error but just run that migration command (as in my case i got this error when i tried to run migrations, before that New Database topic of chapter2) mentioned in the book which are:

after changes run below command in terminal (according to book)
docker-compose exec web python manage.py migrate
then
docker-compose exec web python manage.py createsuperuser

for my case, in addition to what you said, I also add
expose:
- "5432"
I add it just before environment in the db service. And it works perfectly.

according to the page
https://stackoverflow.com/questions/51750715/could-not-translate-host-name-db-to-address-using-postgres-docker-compose-and

[YashMarmat]

finally !!!! it worked
after spending two days with this issue (frustating hours of my life) i finally resolved this issue,
if you are facing it too then put the following code in your docker-compose.yml file (just below image:postgres11).

environment:
- "POSTGRES_HOST_AUTH_METHOD=trust"

Note: after applying the above code the local host server can still show the same error but just run that migration command (as in my case i got this error when i tried to run migrations, before that New Database topic of chapter2) mentioned in the book which are:

after changes run below command in terminal (according to book)
docker-compose exec web python manage.py migrate
then
docker-compose exec web python manage.py createsuperuser