1. sqlalchemy CRUD 예제 실습

2. callcenter 프로젝트 제작중

project/CALLCENTER_APP/backend/repository/db_init.py

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+from sqlalchemy import create_engine
+from sqlalchemy.orm import DeclarativeBase, sessionmaker
+from pathlib import Path
+
+Path("db").mkdir(parents=True, exist_ok=True)
+
+# echo sql 구문 출력시키는
+engine = create_engine('sqlite:///db/callcenter.db', echo=True)
+
+# 세션 팩토리 생성
+SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False)
+
+# Base = declarative_Base()
+class Base(DeclarativeBase):
+    pass
+
+# session 을 다른 모듈에서 사용할 수 있도록 제공
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

project/CALLCENTER_APP/backend/repository/models.py

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+from backend.repository.db_init import Base
+from sqlalchemy.orm import Mapped, mapped_column
+from sqlalchemy import DateTime, func, String, ForeignKey
+from datetime import datetime
+
+class Customer(Base):
+    __tablename__ = 'customers'
+
+    customer_id:Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    name:Mapped[str] = mapped_column(String(50), nullable=False)
+    phone:Mapped[str] = mapped_column(String(20), nullable=False)
+
+    def __str__(self):
+        return f"<Customer id={self.customer_id} name={self.name} phone = {self.phone}]"
+
+
+# 상담기록 저장
+class CallHistory(Base):
+    __tablename__ = 'call_history'
+
+    call_id:Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    customer_id:Mapped[int] = mapped_column(ForeignKey('customers.customer_id'), nullable=False)
+    transcript:Mapped[str]
+    summary:Mapped[str]
+    category:Mapped[str] = mapped_column(String(50))
+    sentiment:Mapped[str] = mapped_column(String(20))
+    customer_issue:Mapped[str]
+    resolution:Mapped[str]
+    # created_at:Mapped[datetime] = mapped_column(server_default=func.now(), nullable=False)
+    created_at:Mapped[datetime] = mapped_column(default=datetime.now, nullable=False)

project/CALLCENTER_APP/backend/repository/seed.py

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+# 강제로 회원가입
+from sqlalchemy.orm import Session
+from backend.repository.db_init import SessionLocal
+from backend.repository.models import Customer
+
+db = SessionLocal()
+
+DEFAULT_CUSTOMERS = [
+    Customer(name="홍길동", phone="010-1234-5678"),
+    Customer(name="최철수", phone="010-4321-8765"),
+    Customer(name="박영희", phone="010-5678-1234"),
+]
+
+def seed_customers(db: Session):
+    """
+    customer 테이블에 기본(연습용) 회원 데이터 삽입
+    (중복 실행 방지 : 이미 데이터가 있으면 건너뜀)
+    """
+
+    existing = db.query(Customer).first()
+    if existing:
+        print("[Seed] customer 테이블에 이미 데이터가 있습니다.")
+        return
+
+    db.add_all(DEFAULT_CUSTOMERS)
+    db.commit()
+    db.close()
+    print(f"[Seed] 기본 회원 {len(DEFAULT_CUSTOMERS)}명 생성 완료")