后端开发完成

backend/app/models/__init__.py

@@ -0,0 +1,5 @@
+from app.models.user import User
+from app.models.project import Project
+from app.models.project_history import ProjectHistory
+
+__all__ = ["User", "Project", "ProjectHistory"]

backend/app/models/project.py

@@ -0,0 +1,20 @@
+from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey
+from sqlalchemy.sql import func
+from app.database.database import Base
+
+
+class Project(Base):
+    """项目模型"""
+    __tablename__ = "projects"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String(100), nullable=False)
+    description = Column(Text)
+    created_by = Column(Integer, ForeignKey("users.id"), nullable=False)
+    department = Column(String(50), nullable=False)
+    budget = Column(Integer)
+    start_date = Column(DateTime(timezone=True))
+    end_date = Column(DateTime(timezone=True))
+    status = Column(String(20), default="pending")
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

backend/app/models/project_history.py

@@ -0,0 +1,17 @@
+from sqlalchemy import Column, Integer, String, Text, DateTime, ForeignKey
+from sqlalchemy.sql import func
+from app.database.database import Base
+
+
+class ProjectHistory(Base):
+    """项目历史记录模型"""
+    __tablename__ = "project_histories"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    project_id = Column(Integer, ForeignKey("projects.id"), nullable=False)
+    changed_by = Column(Integer, ForeignKey("users.id"), nullable=False)
+    change_field = Column(String(100), nullable=False)
+    old_value = Column(Text)
+    new_value = Column(Text)
+    change_description = Column(Text)
+    created_at = Column(DateTime(timezone=True), server_default=func.now())

backend/app/models/user.py

@@ -0,0 +1,16 @@
+from sqlalchemy import Column, Integer, String, DateTime
+from sqlalchemy.sql import func
+from app.database.database import Base
+
+
+class User(Base):
+    """用户模型"""
+    __tablename__ = "users"
+    
+    id = Column(Integer, primary_key=True, index=True)
+    username = Column(String(50), unique=True, index=True, nullable=False)
+    password = Column(String(100), nullable=False)
+    department = Column(String(50), nullable=False)
+    role = Column(String(20), nullable=False)  # admin, marketing, other
+    created_at = Column(DateTime(timezone=True), server_default=func.now())
+    updated_at = Column(DateTime(timezone=True), onupdate=func.now())