<type 'exceptions.ValueError'> invalid literal for long() with base 10: 'My-Library-Name'

Question

I'm writing a query code in controller:

books=db(db.book.lib_name=="My-Library-Name").select(db.book.title, db.book.ISBN, orderby=db.book.title)

but I keep getting this error:

<type 'exceptions.ValueError'> invalid literal for long() with base 10: "My-Library-Name"

This is my DAL database(I am using postgresql as my database driver):

db = DAL('postgres://myUsername:myPassword@localhost/libman',pool_size=0)
db.define_table('library',
            Field('lib_name', ondelete='CASCADE', unique=True),
            Field('address', length=20),
            primarykey=['lib_name'])

db.define_table('book',
                Field('ISBN', unique=True, ondelete='CASCADE'),
                Field('lib_name', 'reference library'),
                Field('pic', 'upload'),
                Field('title', length=100),
                Field('publisher_lname', length=50),
                Field('publisher_fname', length=50),
                Field('no_of_copies', 'integer'),
                Field('available_copies', 'integer'),
                Field('description', length=255),
                primarykey=['ISBN'])

Thanks in Advance for the respond

Answer 1

lib-name is a foreign key, so it is not a valid query. Query could be based on db.book.ISBN instead.

On the other hand I suggest to change your model to:

db.define_table('library',
        Field('lib_name', ondelete='CASCADE', unique=True),
        Field('address', length=20),
        migrate=True,
        )

db.define_table('book',
            Field('ISBN', unique=True, ondelete='CASCADE'),
            Field('lib_name', 'reference library'),
            Field('pic', 'upload'),
            Field('title', length=100),
            Field('publisher_lname', length=50),
            Field('publisher_fname', length=50),
            Field('no_of_copies', 'integer'),
            Field('available_copies', 'integer'),
            Field('description', length=255),
            migrate=True,
            )

Since primarykey is intended to connect to legacy DB. Dont know if this is your case