Fix ModuleNotFoundError for pydantic_settings

- Added pydantic and pydantic-settings to requirements.txt
- Updated config.py to use proper Pydantic v2 imports and patterns
- Updated schemas to use Pydantic v2 configuration format
- Replaced orm_mode with from_attributes=True in schema models
- Applied code formatting with Ruff

app/core/config.py

@@ -1,6 +1,6 @@
 from pathlib import Path
 
-from pydantic_settings import BaseSettings
+from pydantic_settings import BaseSettings, SettingsConfigDict
 
 
 class Settings(BaseSettings):
@@ -20,9 +20,7 @@ class Settings(BaseSettings):
     # Configure max file size (10MB by default)
     MAX_FILE_SIZE: int = 10 * 1024 * 1024  # 10MB in bytes
 
-    class Config:
+    model_config = SettingsConfigDict(case_sensitive=True, env_file=".env")
-        case_sensitive = True
-        env_file = ".env"
 
 
 # Create settings instance

app/db/migrations/env.py

@@ -14,6 +14,7 @@ sys.path.insert(0, str(current_path))
 
 # Import Base after setting up sys.path
 from app.db.base import Base  # noqa: E402
+
 # Import all models to register them with SQLAlchemy metadata
 from app.models.file import File  # noqa: E402, F401 - import needed for Alembic to detect models
 

app/schemas/file.py

@@ -1,5 +1,5 @@
 from datetime import datetime
-from pydantic import BaseModel
+from pydantic import BaseModel, ConfigDict
 
 
 class FileBase(BaseModel):
@@ -25,8 +25,7 @@ class FileInDB(FileBase):
     created_at: datetime
     updated_at: datetime
 
-    class Config:
+    model_config = ConfigDict(from_attributes=True)
-        orm_mode = True
 
 
 class FileResponse(FileBase):
@@ -37,5 +36,4 @@ class FileResponse(FileBase):
     created_at: datetime
     download_url: str
 
-    class Config:
+    model_config = ConfigDict(from_attributes=True)
-        orm_mode = True

requirements.txt

@@ -4,4 +4,6 @@ sqlalchemy>=2.0.0
 alembic>=1.10.0
 python-multipart>=0.0.6
 python-dotenv>=1.0.0
+pydantic>=2.0.0
+pydantic-settings>=2.0.0
 ruff>=0.1.0