refactors

backend/repositories/role.py

@@ -0,0 +1,18 @@
+"""Role repository for database queries."""
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from models import Role
+
+
+class RoleRepository:
+    """Repository for role-related database queries."""
+
+    def __init__(self, db: AsyncSession):
+        self.db = db
+
+    async def get_by_name(self, name: str) -> Role | None:
+        """Get a role by name."""
+        result = await self.db.execute(select(Role).where(Role.name == name))
+        return result.scalar_one_or_none()