updated all model declarations so that they represent the database to a T

the_works/models.py

@@ -34,13 +34,13 @@ class Base(DeclarativeBase):
     return f"{type(self).__name__}({str(self.asdict())})"
 
 
-# Classes for models with a single column (plus ID) which can be handled by the generic class-based view 
+# Classes for models with a single column (plus ID) which can be handled by the generic class-based view
 
 class Genre(Base):
   __tablename__ = 'Genre'
 
   ID: Mapped[int] = mapped_column(primary_key=True)
-  Genre: Mapped[str] = mapped_column(CheckConstraint('Genre <> ""', name='GenreNotEmptyConstraint'), unique=True)
+  Genre: Mapped[str] = mapped_column(CheckConstraint('Genre <> ""', name='GenreNotEmptyConstraint'), nullable=False, unique=True)
 
   texte: Mapped[List['Text_Genre']] = relationship(back_populates='genre')
   werke: Mapped[List['Werk_Genre']] = relationship(back_populates='genre')
@@ -50,7 +50,7 @@ class Herausgeber(Base):
   __tablename__ = 'Herausgeber'
 
   ID: Mapped[int] = mapped_column(primary_key=True)
-  Name: Mapped[str] = mapped_column(CheckConstraint('Herausgeber <> ""', name='HerausgeberNotEmptyConstraint'), unique=True)
+  Name: Mapped[str] = mapped_column(CheckConstraint('Herausgeber <> ""', name='HerausgeberNotEmptyConstraint'), nullable=False, unique=True)
 
   werke: Mapped[List['Werk_Herausgeber']] = relationship(back_populates='herausgeber')
 
@@ -59,7 +59,7 @@ class Pseudonym(Base):
   __tablename__ = 'Pseudonym'
 
   ID: Mapped[int] = mapped_column(primary_key=True)
-  Pseudonym: Mapped[str] = mapped_column(CheckConstraint('Pseudonym <> ""', name='PseudonymNotEmptyConstraint'), unique=True)
+  Pseudonym: Mapped[str] = mapped_column(CheckConstraint('Pseudonym <> ""', name='PseudonymNotEmptyConstraint'), nullable=False, unique=True)
 
   veroeffentlichung: Mapped[List['Veroeffentlichung']] = relationship(back_populates='pseudonym')
 
@@ -68,7 +68,7 @@ class Sprache(Base):
   __tablename__ = 'Sprache'
 
   ID: Mapped[int] = mapped_column(primary_key=True)
-  Sprache: Mapped[str] = mapped_column(CheckConstraint('Sprache <> ""', name='SpracheNotEmptyConstraint'), unique=True)
+  Sprache: Mapped[str] = mapped_column(CheckConstraint('Sprache <> ""', name='SpracheNotEmptyConstraint'), nullable=False, unique=True)
 
   text: Mapped[List['Text']] = relationship(back_populates='sprache')
 
@@ -77,7 +77,7 @@ class Textform(Base):
   __tablename__ = 'Textform'
 
   ID: Mapped[int] = mapped_column(primary_key=True)
-  Textform: Mapped[str] = mapped_column(CheckConstraint('Textform <> ""', name='TextformNotEmptyConstraint'), unique=True)
+  Textform: Mapped[str] = mapped_column(CheckConstraint('Textform <> ""', name='TextformNotEmptyConstraint'), nullable=False, unique=True)
 
   text: Mapped[List['Text']] = relationship(back_populates='textform')
 
@@ -86,7 +86,7 @@ class Verlag(Base):
   __tablename__ = 'Verlag'
 
   ID: Mapped[int] = mapped_column(primary_key=True)
-  Verlag: Mapped[str] = mapped_column(CheckConstraint('Verlag <> ""', name='VerlagNotEmptyConstraint'), unique=True)
+  Verlag: Mapped[str] = mapped_column(CheckConstraint('Verlag <> ""', name='VerlagNotEmptyConstraint'), nullable=False, unique=True)
 
   reihe: Mapped[List['Reihe']] = relationship(back_populates='verlag')
   werk: Mapped[List['Werk']] = relationship(back_populates='verlag')
@@ -96,18 +96,18 @@ class Werksform(Base):
   __tablename__ = 'Werksform'
 
   ID: Mapped[int] = mapped_column(primary_key=True)
-  Werksform: Mapped[str] = mapped_column(CheckConstraint('Werksform <> ""', name='WerksformNotEmptyConstraint'), unique=True)
+  Werksform: Mapped[str] = mapped_column(CheckConstraint('Werksform <> ""', name='WerksformNotEmptyConstraint'), nullable=False, unique=True)
 
   werk: Mapped[List['Werk']] = relationship(back_populates='werksform')
 
 
-# Classes that have more than one column and need dedicated view functions 
+# Classes that have more than one column and need dedicated view functions
 
 class Reihe(Base):
   __tablename__ = 'Reihe'
 
   ID: Mapped[int] = mapped_column(primary_key=True)
-  Titel: Mapped[str] = mapped_column(CheckConstraint('Titel <> ""', name='ReihentitelNotEmptyConstraint'))
+  Titel: Mapped[str] = mapped_column(CheckConstraint('Titel <> ""', name='ReihentitelNotEmptyConstraint'), nullable=False)
 
   Verlag: Mapped[Optional[str]] = mapped_column(ForeignKey('Verlag.ID'))
   verlag: Mapped['Verlag'] = relationship(back_populates='reihe')
@@ -120,14 +120,14 @@ class Titelbild(Base):
   __tablename__ = 'Titelbild'
 
   ID: Mapped[int] = mapped_column(primary_key=True)
-  Mimetype: Mapped[str]
+  Mimetype: Mapped[str] = mapped_column(nullable=False)
-  Dateiname: Mapped[str]
+  Dateiname: Mapped[str] = mapped_column(nullable=False)
-  Dateigroesse: Mapped[int]
+  Dateigroesse: Mapped[int] = mapped_column(nullable=False)
-  Breite: Mapped[int]
+  Breite: Mapped[int] = mapped_column(nullable=False)
-  Hoehe: Mapped[int]
+  Hoehe: Mapped[int] = mapped_column(nullable=False)
-  Bild: Mapped[bytes]
+  Bild: Mapped[bytes] = mapped_column(nullable=False)
-  Thumbnail: Mapped[bytes]
+  Thumbnail: Mapped[bytes] = mapped_column(nullable=False)
-  sha256: Mapped[str] = mapped_column(CheckConstraint('sha256 <> ""', name='sha256NotEmptyConstraint'), unique=True)
+  sha256: Mapped[str] = mapped_column(CheckConstraint('sha256 <> ""', name='sha256NotEmptyConstraint'), nullable=False, unique=True)
 
   werk: Mapped[List['Werk']] = relationship(back_populates='titelbild')
 
@@ -143,15 +143,15 @@ class Text(Base):
 
   # regular columns
   ID: Mapped[int] = mapped_column(primary_key=True)
-  Titel: Mapped[str] = mapped_column(CheckConstraint('Titel <> ""', name='TexttitelNotEmptyConstraint'))
+  Titel: Mapped[str] = mapped_column(CheckConstraint('Titel <> ""', name='TexttitelNotEmptyConstraint'), nullable=False)
   Untertitel: Mapped[Optional[str]]
 
   # many-to-one
   Reihe: Mapped[Optional[int]] = mapped_column(ForeignKey('Reihe.ID'))
   reihe: Mapped[Optional["Reihe"]] = relationship(back_populates="text")
-  Sprache: Mapped[int] = mapped_column(ForeignKey('Sprache.ID'))
+  Sprache: Mapped[int] = mapped_column(ForeignKey('Sprache.ID'), nullable=False)
   sprache: Mapped['Sprache'] = relationship(back_populates='text')
-  Textform: Mapped[int] = mapped_column(ForeignKey('Textform.ID'))
+  Textform: Mapped[int] = mapped_column(ForeignKey('Textform.ID'), nullable=False)
   textform: Mapped['Textform'] = relationship(back_populates='text')
 
   # one-to-many
@@ -167,7 +167,7 @@ class Werk(Base):
 
   # regular columns
   ID: Mapped[int] = mapped_column(primary_key=True)
-  Titel: Mapped[str] = mapped_column(CheckConstraint('Titel <> ""', name='WerkstitelNotEmptyConstraint'))
+  Titel: Mapped[str] = mapped_column(CheckConstraint('Titel <> ""', name='WerkstitelNotEmptyConstraint'), nullable=False)
   Untertitel: Mapped[Optional[str]]
   Reihennummer: Mapped[Optional[str]]
   Erscheinungsdatum: Mapped[Optional[str]]
@@ -185,7 +185,7 @@ class Werk(Base):
   titelbild: Mapped[Optional['Titelbild']] = relationship(back_populates='werk')
   Verlag: Mapped[Optional[int]] = mapped_column(ForeignKey('Verlag.ID'))
   verlag: Mapped[Optional['Verlag']] = relationship(back_populates='werk')
-  Werksform: Mapped[int] = mapped_column(ForeignKey('Werksform.ID'))
+  Werksform: Mapped[int] = mapped_column(ForeignKey('Werksform.ID'), nullable=False)
   werksform: Mapped['Werksform'] = relationship(back_populates='werk')
 
   # one-to-many
@@ -207,11 +207,11 @@ class Veroeffentlichung(Base):
   AltUntertitel: Mapped[Optional[str]]
 
   # many-to-one
-  Pseudonym: Mapped[int] = mapped_column(ForeignKey('Pseudonym.ID'))
+  Pseudonym: Mapped[int] = mapped_column(ForeignKey('Pseudonym.ID'), nullable=False)
   pseudonym: Mapped['Pseudonym'] = relationship(back_populates='veroeffentlichung')
-  Text: Mapped[int] = mapped_column(ForeignKey('Text.ID'))
+  Text: Mapped[int] = mapped_column(ForeignKey('Text.ID'), nullable=False)
   text: Mapped['Text'] = relationship(back_populates='veroeffentlichung')
-  Werk: Mapped[int] = mapped_column(ForeignKey('Werk.ID'))
+  Werk: Mapped[int] = mapped_column(ForeignKey('Werk.ID'), nullable=False)
   werk: Mapped['Werk'] = relationship(back_populates='veroeffentlichung')