Add Book model

models/book.py

@@ -1,33 +1,51 @@
-from sqlalchemy import Column, String, Integer, ForeignKey
+from sqlalchemy import Column, String, ForeignKey
 from sqlalchemy.orm import relationship
-from sqlalchemy.sql import func
+from sqlalchemy.dialects.postgresql import UUID
 from app.api.db.base_class import Base
 import uuid
 
 class Book(Base):
     __tablename__ = "books"
 
-    id = Column(Integer, primary_key=True, index=True)
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
-    title = Column(String, index=True)
+    title = Column(String, nullable=False, index=True)
-    author = Column(String, index=True)
+    author = Column(String, nullable=False, index=True)
-    description = Column(String)
+    
-    published_year = Column(Integer)
+    # Relationships
-    isbn = Column(String, unique=True)
+    # author_id = Column(UUID(as_uuid=True), ForeignKey("authors.id"))
+    # author = relationship("Author", back_populates="books")
 
     # Timestamps
     created_at = Column(DateTime, default=func.now())
     updated_at = Column(DateTime, default=func.now(), onupdate=func.now())
 ```
 
-This SQLAlchemy model defines a `Book` class that extends the `Base` class. It includes the following columns:
+This SQLAlchemy model defines a `Book` class with the following columns:
 
-- `id`: An integer primary key with an index.
+- `id` (UUID): The primary key for the book, generated using `uuid.uuid4`.
-- `title`: A string column for the book title with an index.
+- `title` (String): The title of the book, indexed for efficient filtering.
-- `author`: A string column for the book author with an index.
+- `author` (String): The author of the book, indexed for efficient filtering.
-- `description`: A string column for the book description.
-- `published_year`: An integer column for the year the book was published.
-- `isbn`: A string column for the book's ISBN number, which is set as unique.
-- `created_at`: A datetime column that stores the creation timestamp, defaulting to the current time.
-- `updated_at`: A datetime column that stores the last update timestamp, defaulting to the current time and updating on each change.
 
-With this model, you can query books by title and author using the indexes on those columns. The `isbn` column is set as unique to prevent duplicates. The timestamps will automatically record when a book record was created and last updated.
+The model also includes timestamps for `created_at` and `updated_at` to track when the book record was created and last updated.
+
+You can optionally include a relationship to an `Author` model by uncommenting the `author_id` and `author` lines. In this case, you would need to create a separate `Author` model and define the relationship in both directions.
+
+With this model, you can filter books by `title` and `author` using SQLAlchemy queries. For example:
+
+```python
+from app.models import Book
+
+# Filter by title
+books = Book.query.filter(Book.title.ilike(f"%{title_filter}%")).all()
+
+# Filter by author
+books = Book.query.filter(Book.author.ilike(f"%{author_filter}%")).all()
+
+# Filter by both title and author
+books = Book.query.filter(
+    Book.title.ilike(f"%{title_filter}%"),
+    Book.author.ilike(f"%{author_filter}%")
+).all()
+```
+
+Remember to import the necessary modules and configure the database connection in your FastAPI application.