无法使用 PostgreSQL 在 Rails 上启动服务器

Question

I'm making an address book app and my reequipments are to use postgres as a database. Installing and setting up has gone smoothly but for some reason when I go to start the server I get this error message "connection to server at "localhost" (::1), port 5432 failed: fe_sendauth: no password supplied"

this is my database.yml

default: &default
  adapter: postgresql
  encoding: unicode

  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>

development:
  <<: *default
  database: scafold_development

test:
  <<: *default
  database: scafold_test
  username: scafold
  password: 

production:
  <<: *default
  database: scafold_production
  username: scafold
  password: <%= ENV["SCAFOLD_DATABASE_PASSWORD"] %>

I've tried searching everywhere for my specific problem, but I cannot find a solution. Please help.

Answer 1

Assuming you haven't actually created your postgresql instance, there are a couple ways you can go about doing so:

My personal go to method is using a docker-compose file and the corresponding docker compose up -d command to startup the container.

Something like:

# docker-compose.yml

version: "3"
services:
  postgres:
    image: postgres:14-alpine
    ports:
      - 5432:5432
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: password
      POSTGRES_DB: postgres_db

# path/to/database.yml

<< ENVIRONMENT_TYPE_HERE >>:
    url: postgresql://postgres:password@localhost:5432/postgres_db?schema=public&connection_limit=5