Hi! Thanks for the answers. I have some problems, reproducing it in a small piece of code.
It occurs here. http://toscawidgets.org/trac/rum/ticket/31 I will provide you with details, when I have isolated the problems. Michael On 29 Aug., 17:06, Michael Bayer <[EMAIL PROTECTED]> wrote: > Unfortunately, without an illustration of your usage pattern, we > can't assist with your issue. Here's the same test case again from > earlier in the thread. Can you modify it to look like your failing > condition ? > > rom sqlalchemy import * > from sqlalchemy.orm import * > from sqlalchemy.ext.declarative import declarative_base > > engine = create_engine('sqlite://', echo=True) > Base = declarative_base() > > class PublicationElement(Base): > __tablename__ = 'publication' > publication_id = Column(Integer, primary_key=True) > name = Column(Unicode(255)) > > class SectionElement(Base): > __tablename__ = 'section' > section_id = Column(Integer, primary_key=True) > publication_id = Column(Integer, > ForeignKey('publication.publication_id'), nullable=False) > publication = relation('PublicationElement', cascade="all, delete- > orphan", backref='sections') > name = Column(Unicode(255)) > > Base.metadata.create_all(engine) > > Session = sessionmaker(bind=engine) > > sec1 = SectionElement(name='s1', > publication=PublicationElement(name='p1')) > sess = Session() > sess.add(sec1) > sess.commit() > > assert sess.query(SectionElement).one().publication.name == 'p1' > > sess.delete(sec1) > sess.commit() > > assert engine.execute("select count(1) from publication").scalar() == 0 > assert engine.execute("select count(1) from section").scalar() == 0 > > On Aug 29, 2008, at 1:44 AM, Michael Brickenstein wrote: > > > > > Hi! > > Hi have a similar problem using > > table reflection a la sqlsoup. My DB Backend ist postgresql 8.3. > > > I have a many to many relation: > > orms5=# \d project_programming_language > > Table "public.project_programming_language" > > Column | Type | Modifiers > > -------------------------+---------+----------- > > project_id | integer | not null > > programming_language_id | integer | not null > > Indexes: > > "projprogpkconstraint" PRIMARY KEY, btree (project_id, > > programming_language_id) > > Foreign-key constraints: > > "programmierspracheconstraint" FOREIGN KEY > > (programming_language_id) REFERENCES > > programming_language(programming_language_id) ON DELETE CASCADE > > "projektconstraint" FOREIGN KEY (project_id) REFERENCES > > project(project_id) ON DELETE CASCADE > > > I got the same message, when delete an object of the table > > programming_language: > > > Dependency rule tried > > to blank-out primary key column > > > As you can see, the foreign key constraints in the db work fine: > > I can drop the row via a > > DELETE > > statement in sql. > > > Michael --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~----------~----~----~----~------~----~------~--~---
