Updated to work with SQLAlchemy 1.4 rules

database.py

@@ -52,10 +52,19 @@ class Person(Persisted):
                              back_populates='reviewers')
     # If we want to be able to access the join table's pairs themselves, we write a standard one-to-many relationship
     # with extra information.
-    reviewerships = relationship('Reviewership', uselist=True, foreign_keys='[Reviewership.reviewer_id]',
-                                 back_populates='reviewer')
-    revieweeships = relationship('Reviewership', uselist=True, foreign_keys='[Reviewership.reviewee_id]',
-                                 back_populates='reviewee')
+    # (replace the reviewers & reviewees relationships on lines 45-52 with:
+    # reviewers = relationship('Person', uselist=True, secondary='reviewerships',
+    #                          primaryjoin='Reviewership.reviewee_id == Person.person_id',
+    #                          secondaryjoin='Reviewership.reviewer_id == Person.person_id',
+    #                          viewonly=True)
+    # reviewees = relationship('Person', uselist=True, secondary='reviewerships',
+    #                          primaryjoin='Reviewership.reviewer_id == Person.person_id',
+    #                          secondaryjoin='Reviewership.reviewee_id == Person.person_id',
+    #                          viewonly=True)
+    # reviewerships = relationship('Reviewership', uselist=True, foreign_keys='[Reviewership.reviewer_id]',
+    #                              back_populates='reviewer')
+    # revieweeships = relationship('Reviewership', uselist=True, foreign_keys='[Reviewership.reviewee_id]',
+    #                              back_populates='reviewee')
 
 
 class Reviewership(Persisted):
@@ -64,10 +73,10 @@ class Reviewership(Persisted):
     reviewee_id = Column(Integer, ForeignKey('people.person_id', ondelete='CASCADE'), primary_key=True)
     # If we want to be able to access the related records from a join-table pairs, we write a standard many-to-one
     # relationship with extra information.
-    reviewer = relationship('Person', foreign_keys='[Reviewership.reviewer_id]', remote_side='[Person.person_id]',
-                            back_populates='reviewerships')
-    reviewee = relationship('Person', foreign_keys='[Reviewership.reviewee_id]', remote_side='[Person.person_id]',
-                            back_populates='revieweeships')
+    # reviewer = relationship('Person', foreign_keys='[Reviewership.reviewer_id]', remote_side='[Person.person_id]',
+    #                         back_populates='reviewerships')
+    # reviewee = relationship('Person', foreign_keys='[Reviewership.reviewee_id]', remote_side='[Person.person_id]',
+    #                         back_populates='revieweeships')
 
 
 class Database(object):

installer.py

@@ -19,7 +19,7 @@ def add_starter_data(session):
 
 def main():
     try:
-        url = Database.construct_mysql_url('localhost', 3306, 'people', 'root', 'cse')
+        url = Database.construct_mysql_url('localhost', 3306, 'people', 'root', '')
         database = Database(url)
         database.ensure_tables_exist()
         print('Tables created.')