Update generated backend for blog_app with entities: posts, comments, tags, user

app/api/core/dependencies/dependencies.py

@@ -0,0 +1,9 @@
+from sqlalchemy.orm import Session
+from app.api.db.database import SessionLocal
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()

app/api/core/middleware/activity_tracker.py

@@ -0,0 +1,13 @@
+from time import time
+from starlette.middleware.base import BaseHTTPMiddleware
+from starlette.requests import Request
+from starlette.responses import Response
+from loguru import logger
+
+class ActivityTrackerMiddleware(BaseHTTPMiddleware):
+    async def dispatch(self, request: Request, call_next):
+        start_time = time()
+        response: Response = await call_next(request)
+        process_time = time() - start_time
+        logger.info(f"Request path: {request.url.path} completed in {process_time:.4f} seconds")
+        return response

app/api/db/database.py

@@ -0,0 +1,7 @@
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+SQLALCHEMY_DATABASE_URL = 'sqlite:///./blog_app.db'
+engine = create_engine(SQLALCHEMY_DATABASE_URL, connect_args={'check_same_thread': False})
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+Base = declarative_base()

app/api/v1/models/comments.py

@@ -0,0 +1,39 @@
+Here's a `comments.py` file for the `app/api/v1/models/` directory of the `blog_app_x0iat` FastAPI backend:
+
+from typing import Optional
+from sqlalchemy import Column, ForeignKey, Integer, String, Text
+from sqlalchemy.orm import relationship
+from app.api.db.database import Base
+
+class Comments(Base):
+    __tablename__ = "comments"
+
+    id = Column(Integer, primary_key=True, index=True)
+    content = Column(Text, nullable=False)
+    post_id = Column(Integer, ForeignKey("posts.id"), nullable=False)
+    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
+    parent_comment_id = Column(Integer, ForeignKey("comments.id"), nullable=True)
+
+    post = relationship("Posts", back_populates="comments")
+    user = relationship("Users", back_populates="comments")
+    parent_comment = relationship("Comments", remote_side=[id], back_populates="replies")
+    replies = relationship("Comments", back_populates="parent_comment")
+
+    def __repr__(self):
+        return f"Comment(id={self.id}, content='{self.content[:20]}...', post_id={self.post_id}, user_id={self.user_id})"
+
+Explanation:
+
+4. Defined columns for the `Comments` table:
+   - `id`: Integer primary key with index
+   - `content`: Text column for the comment content (required)
+   - `post_id`: Integer foreign key referencing the `posts` table (required)
+   - `user_id`: Integer foreign key referencing the `users` table (required)
+   - `parent_comment_id`: Integer foreign key referencing the `comments` table itself (nullable, for nested comments)
+5. Defined relationships with other models:
+   - `post`: One-to-many relationship with the `Posts` model
+   - `user`: One-to-many relationship with the `Users` model
+   - `parent_comment`: One-to-many self-referential relationship for nested comments
+   - `replies`: One-to-many self-referential relationship for nested comments (reverse of `parent_comment`)
+
+Note: This implementation assumes the existence of `Posts` and `Users` models in the same directory. You may need to adjust the relationship definitions based on the actual structure of your project.

app/api/v1/models/posts.py

@@ -0,0 +1,32 @@
+Here's the `posts.py` file for the `app/api/v1/models/` directory of the `blog_app` FastAPI backend:
+
+from typing import Optional
+from sqlalchemy import Column, ForeignKey, Integer, String, Text
+from sqlalchemy.orm import relationship
+from app.api.db.database import Base
+
+class Posts(Base):
+    __tablename__ = 'posts'
+
+    id = Column(Integer, primary_key=True, index=True)
+    title = Column(String, nullable=False)
+    content = Column(Text, nullable=False)
+    user_id = Column(Integer, ForeignKey('users.id'), nullable=False)
+
+    user = relationship('Users', back_populates='posts')
+
+    def __repr__(self):
+        return f"Posts(id={self.id}, title='{self.title}', content='{self.content[:20]}...', user_id={self.user_id})"
+
+Explanation:
+
+
+
+
+
+
+
+
+
+
+Note: This code assumes the existence of a `Users` model class in the same directory. If the `Users` model does not exist, you may need to remove or modify the `user` relationship definition accordingly.

app/api/v1/models/tags.py

@@ -0,0 +1,24 @@
+Here's an example `tags.py` file for the `app/api/v1/models/` directory of the `blog_app` FastAPI project:
+
+from typing import Optional
+from sqlalchemy import Column, ForeignKey, Integer, String
+from sqlalchemy.orm import relationship
+from app.api.db.database import Base
+
+class Tags(Base):
+    __tablename__ = "tags"
+
+    id = Column(Integer, primary_key=True, index=True)
+    name = Column(String(50), nullable=False, unique=True)
+    description = Column(String(200), nullable=True)
+
+    posts = relationship("Post", back_populates="tags", secondary="post_tags")
+
+    def __repr__(self):
+        return f"Tag(id={self.id}, name='{self.name}', description='{self.description}')"
+
+Explanation:
+
+5. The `name` column is defined as a `String` with a maximum length of 50 characters, nullable=False (required), and unique=True (no duplicates allowed).
+
+Note: This code assumes that the `Post` model exists and has a `tags` attribute defined with a back-populates relationship to the `Tags` model. Additionally, the `post_tags` association table should be defined separately to establish the many-to-many relationship between `Tags` and `Post` models.

app/api/v1/models/user.py

@@ -0,0 +1,33 @@
+Here's the `user.py` file for the `app/api/v1/models/` directory of the `blog_app` FastAPI backend:
+
+from typing import Optional
+from sqlalchemy import Column, ForeignKey, Integer, String, Text
+from sqlalchemy.orm import relationship
+from app.api.db.database import Base
+
+class User(Base):
+    __tablename__ = 'user'
+
+    id = Column(Integer, primary_key=True, index=True)
+    username = Column(String, unique=True, index=True, nullable=False)
+    email = Column(String, unique=True, index=True, nullable=False)
+    hashed_password = Column(String, nullable=False)
+    is_active = Column(Integer, default=1)
+    bio = Column(Text, nullable=True)
+
+    posts = relationship("Post", back_populates="author")
+
+    def __repr__(self):
+        return f"User(id={self.id}, username='{self.username}', email='{self.email}')"
+
+Explanation:
+
+5. Defined columns for the `User` model:
+   - `id`: Integer primary key with index
+   - `username`: String, unique, indexed, and non-nullable
+   - `email`: String, unique, indexed, and non-nullable
+   - `hashed_password`: String, non-nullable
+   - `is_active`: Integer with a default value of 1
+   - `bio`: Text, nullable
+
+Note: This code assumes that the `Post` model is defined in a separate file and imported accordingly. Additionally, you may need to adjust the imports and paths based on your project structure and dependencies.

app/api/v1/routes/__init__.py

@@ -0,0 +1,3 @@
+from fastapi import APIRouter
+
+router = APIRouter()

app/api/v1/routes/comments.py

@@ -0,0 +1,9 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from app.api.core.dependencies import get_db
+
+router = APIRouter()
+
+@router.get('/comments/')
+def read_comments(db: Session = Depends(get_db)):
+    return {'message': 'Read comments'}

app/api/v1/routes/posts.py

@@ -0,0 +1,9 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from app.api.core.dependencies import get_db
+
+router = APIRouter()
+
+@router.get('/posts/')
+def read_posts(db: Session = Depends(get_db)):
+    return {'message': 'Read posts'}

app/api/v1/routes/tags.py

@@ -0,0 +1,9 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from app.api.core.dependencies import get_db
+
+router = APIRouter()
+
+@router.get('/tags/')
+def read_tags(db: Session = Depends(get_db)):
+    return {'message': 'Read tags'}

app/api/v1/routes/user.py

@@ -0,0 +1,9 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from app.api.core.dependencies import get_db
+
+router = APIRouter()
+
+@router.get('/user/')
+def read_user(db: Session = Depends(get_db)):
+    return {'message': 'Read user'}

app/api/v1/schemas/comments.py

@@ -0,0 +1,11 @@
+from pydantic import BaseModel
+
+class CommentsBase(BaseModel):
+    body: str
+
+class Comments(CommentsBase):
+    id: int
+    post_id: int
+
+    class Config:
+        orm_mode = True

app/api/v1/schemas/posts.py

@@ -0,0 +1,9 @@
+from pydantic import BaseModel
+
+class PostsBase(BaseModel):
+    title: str
+    content: str
+
+class Posts(PostsBase):
+    class Config:
+        orm_mode = True

app/api/v1/schemas/tags.py

@@ -0,0 +1,11 @@
+from pydantic import BaseModel
+
+class TagsBase(BaseModel):
+    name: str
+
+class Tags(TagsBase):
+    id: int
+    name: str
+
+    class Config:
+        orm_mode = True

app/api/v1/schemas/user.py

@@ -0,0 +1,11 @@
+from pydantic import BaseModel
+
+class UserBase(BaseModel):
+    email: str
+
+class User(UserBase):
+    id: int
+    is_active: bool
+
+    class Config:
+        orm_mode = True

main.py

@@ -1,7 +1,12 @@
 from fastapi import FastAPI
+from app.api.db.database import engine, Base
+from app.api.v1.routes import router
+from app.api.core.middleware.activity_tracker import ActivityTrackerMiddleware
 
-app = FastAPI(title="Generated Backend")
+app = FastAPI()
+app.add_middleware(ActivityTrackerMiddleware)
+app.include_router(router, prefix="/v1")
 
-@app.get("/")
-def read_root():
-    return {"message": "Welcome to the generated backend"}
+@app.on_event("startup")
+def startup_event():
+    Base.metadata.create_all(bind=engine)

requirements.txt

@@ -1,4 +1,5 @@
 fastapi
 uvicorn
 sqlalchemy
-pydantic
+pydantic
+loguru