بناء تطبيقات الويب باستخدام Django و FastAPI

django-admin startapp book

from django.db import models

class Author(models.Model):
    name = models.CharField(max_length=200)

class Book(models.Model):
    title = models.CharField(max_length=200)
    author = models.ForeignKey(Author,on_delete=models.CASCADE)
    published_date = models.DateField()

python manage.py makemigrations && python manage.py migrate

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker

from app.core.config import settings

engine = create_engine(settings.SQLALCHEMY_DATABASE_URI, pool_pre_ping=True)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

from sqlalchemy import create_engine, MetaData
from sqlalchemy.orm import sessionmaker
from app.core.config import settings

engine = create_engine(settings.SQLALCHEMY_DATABASE_URI, pool_pre_ping=True)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
metadata = MetaData(bind=engine)

from app.db.session import metadata, engine
from sqlalchemy import Table

book_table = Table('<table_name>',metadata,autoload_with=engine)

from app.db.session import metadata, engine
from app.db.base import Base
from sqlalchemy import Table

book_table = Table('book_book',metadata,autoload_with=engine)
class Book(Base):
    __table__ = book_table

from app.db.session import metadata,engine
from app.db.base import Base
from sqlalchemy import Table

author_table = Table('book_author',metadata,autoload_with=engine)
class Author(Base):
    __table__ = author_table

def run_migrations_offline() -> None:
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url,
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
    )

    with context.begin_transaction():
        context.run_migrations()

def run_migrations_online() -> None:
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    connectable = engine_from_config(
        config.get_section(config.config_ini_section, {}),
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )

    with connectable.connect() as connection:
        context.configure(
            connection=connection, target_metadata=target_metadata
        )

        with context.begin_transaction():
            context.run_migrations()

def include_object(object, name, type_, reflected, compare_to):
    if type_ == "table"  and reflected and compare_to is None:
        return False
    else:
        return True

def run_migrations_offline() -> None:
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url,
        target_metadata=target_metadata,
        literal_binds=True,
        include_object=include_object,
        dialect_opts={"paramstyle": "named"},
    )

    with context.begin_transaction():
        context.run_migrations()

def run_migrations_online() -> None:
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    connectable = engine_from_config(
        config.get_section(config.config_ini_section, {}),
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )

    with connectable.connect() as connection:
        context.configure(
            connection=connection, target_metadata=target_metadata,include_object=include_object,
        )

        with context.begin_transaction():
            context.run_migrations()

uvicorn app.main:app --reload