.gitignore

@@ -160,4 +160,3 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 #.idea/
 
-*.bak

src/models/author.py

@@ -1,17 +1,12 @@
-from sqlalchemy import Column, Integer, String
+from sqlalchemy import Column, Integer, VARCHAR
 from sqlalchemy.orm import relationship
 from sqlalchemy.ext.declarative import declarative_base
 
-from .book import Book
-
 Base = declarative_base()
 
-
 class Author(Base):
-    __tablename__ = 'author'
+    __tablename__ = "author"
 
-    id = Column(Integer, primary_key=True, autoincrement=True)
+    id = Column(Integer, primary_key=True)
-    first_name = Column(String(50), nullable=False)
+    first_name = Column(VARCHAR(length=50))
-    last_name = Column(String(50), nullable=False)
+    last_name = Column(VARCHAR(length=50))
-
-    books = relationship('Book', back_populates='author')

src/models/book.py

@@ -1,28 +0,0 @@
-from sqlalchemy import Column, Integer, String, TIMESTAMP, Text, ForeignKey, Enum
-from sqlalchemy.orm import relationship
-from sqlalchemy.ext.declarative import declarative_base
-
-from .author import Author
-from .book_category import BookCategory
-
-Base = declarative_base()
-
-
-class Book(Base):
-    __tablename__ = 'book'
-
-    id = Column(Integer, primary_key=True, autoincrement=True)
-    author_id = Column(Integer, ForeignKey(
-        'author.id'), nullable=False, index=True)
-    title = Column(String(100), nullable=False)
-    description = Column(Text, nullable=False)
-    year_published = Column(String(4), nullable=False)
-    isbn = Column(String(13), nullable=False, unique=True)
-    status = Column(Enum('available', 'borrowed', 'reserved'),
-                    nullable=False, default='available')
-    created_at = Column(TIMESTAMP, nullable=True, default="CURRENT_TIMESTAMP")
-
-    author = relationship('Author', back_populates='books')
-    # loans = relationship('Loan', back_populates='book')
-    categories = relationship(
-        'BookCategory', secondary='book_category_link', back_populates='books')

src/models/book_category.py

@@ -1,19 +0,0 @@
-from .book import Book
-from sqlalchemy import Column, Integer, String, TIMESTAMP, Text, ForeignKey, Enum
-from sqlalchemy.orm import relationship
-from sqlalchemy.ext.declarative import declarative_base
-
-Base = declarative_base()
-
-
-class BookCategory(Base):
-    __tablename__ = 'book_category'
-
-    id = Column(Integer, primary_key=True, autoincrement=True)
-    parent_category_id = Column(Integer, ForeignKey(
-        'book_category.id'), nullable=True, index=True)
-    name = Column(String(100), nullable=False, unique=True)
-
-    parent_category = relationship('BookCategory', remote_side=[id])
-    books = relationship(
-        'Book', secondary='book_category_link', back_populates='categories')

src/models/book_category_link.py

@@ -1,10 +0,0 @@
-from sqlalchemy import Column, Integer, ForeignKey
-from sqlalchemy.ext.declarative import declarative_base
-
-Base = declarative_base()
-
-class BookCategoryLink(Base):
-    __tablename__ = 'book_category_link'
-
-    book_id = Column(Integer, ForeignKey('book.id'), primary_key=True, index=True)
-    book_category_id = Column(Integer, ForeignKey('book_category.id'), primary_key=True, index=True)