Feat > Main DB setup (postgresql)

    < Result >
        Build postgresql container
        Django can connect to postgresql container
        Initial migration is done
        Verify postgresql DB contains Django tables

    < Make postgres service in docker-compose.yml >
        Add postgres service
            Change exposed port to other port for external access
            Hide DB connection information

        Modify app service
            Set environment variables for Django DB connection

    < Load DB information in settings.py >
        Make env in python container about DB information
        Load env in settings.py from os.environ.get()

        Migrate DB

    ** CAUTION **
        If you struggle to set the DB information in settings.py,
        Try to delete Docker volume and restart docker-compose

        Because the DB information is saved in Docker volume at the first time
        And then it is not changed even if you change the DB information in env data

.gitignore

@@ -135,7 +135,7 @@ dmypy.json
 # Local tool and os generated files
 .idea/
 .vscode/
-DS_Store
+.DS_Store
 
 # Personal use files
 personal_files/

Documents/project_setup_order.md

@@ -47,4 +47,22 @@
    > Before make commit, Hide the secret key clearly   
 
 
-### 7
+### 7. Main DB(1st DB) setup - postgres
+   * Make postgres service in docker-compose
+   * Hide the DB information
+   * Set the DB information in settings.py
+   >CAUTION:
+   > 
+   >If you struggle to set the DB information in settings.py,<br>
+   >Try to delete Docker volume and restart docker-compose
+   >
+   >Because the DB information is saved in Docker volume at the first time<br>
+   >And then it is not changed even if you change the DB information in env data
+
+   * Make migrations
+   ```shell
+    docker-compose run --rm app sh -c "python manage.py makemigrations"
+   ```
+   ```shell
+     docker-compose run --rm app sh -c "python manage.py migrate"
+   ```

Documents/useful_command.md

@@ -20,4 +20,9 @@
    ```shell
    docker-compose run --rm app sh -c "pwd"
    ```
-
+
+5. Remove docker volume
+   ```shell
+   docker volume rm fola-db-manager-for-personal-use_fola-db-postgres-data
+
+   ```

django_app/config/settings.py

@@ -78,9 +78,16 @@
 
 DATABASES = {
     'default': {
-        'ENGINE': 'django.db.backends.sqlite3',
-        'NAME': BASE_DIR / 'db.sqlite3',
+        'ENGINE': 'django.db.backends.postgresql',
+        'HOST': os.environ.get('POSTGRES_DB_HOST'),
+        'NAME': os.environ.get('POSTGRES_DB_NAME'),
+        'USER': os.environ.get('POSTGRES_DB_USER'),
+        'PASSWORD': os.environ.get('POSTGRES_DB_PASSWORD'),
     }
+    # 'default': {
+    #     'ENGINE': 'django.db.backends.sqlite3',
+    #     'NAME': BASE_DIR / 'db.sqlite3',
+    # }
 }
 
 # Password validation

docker-compose.yml

@@ -11,4 +11,26 @@ services:
     volumes:
       - ./django_app:/django_app
     command: >
-      sh -c "python manage.py runserver 0.0.0.0:8000"
+      sh -c "echo ${TEST_VARIABLE} && python manage.py runserver 0.0.0.0:8000"
+    environment:
+      - POSTGRES_DB_HOST=db-1-postgres
+      - POSTGRES_DB_NAME=${POSTGRES_DB_NAME}
+      - POSTGRES_DB_USER=${POSTGRES_DB_USER}
+      - POSTGRES_DB_PASSWORD=${POSTGRES_DB_PASSWORD}
+    depends_on:
+      - db-1-postgres
+
+  db-1-postgres:
+    image: postgres:14.6-alpine
+    ports:
+      - "${POSTGRES_DB_PORT}:5432"
+    volumes:
+      - fola-db-postgres-data:/var/lib/postgresql/data
+    environment:
+      - POSTGRES_DB=${POSTGRES_DB_NAME}
+      - POSTGRES_USER=${POSTGRES_DB_USER}
+      - POSTGRES_PASSWORD=${POSTGRES_DB_PASSWORD}
+
+
+volumes:
+  fola-db-postgres-data: