I am attempting to add a new record into a database table that references another table and I am receiving this error from Web2Py: "(foreign key constraint failed)".
I am following the Web2Py books example as seen below:
Chapter 7: Forms and validators
Links to referencing records
Now consider the case of two tables linked by a reference field. For example:
db.define_table('person', Field('name', requires=IS_NOT_EMPTY())) db.define_table('dog', Field('owner', 'reference person'), Field('name', requires=IS_NOT_EMPTY())) db.dog.owner.requires = IS_IN_DB(db, 'person.id', '%(name)s')
A person has dogs, and each dog belongs to an owner, which is a person. The dog owner is required to reference a valid db.person.id by '%(name)s'.
This is where I am confused because I believe I am following the example unless I am really oblivious to my errors.
The model I am using is below.
I am attempting to create an album the requires an artist to exist, which the artist record does, from a form.
db.define_table('artist',
Field('name', requires=(IS_SLUG(),
IS_NOT_IN_DB(db, 'artist.name'))),
auth.signature)
# IS_SLUG removes special chars, IS_NOT_IN_DB makes it unique
db.define_table('album',
Field('name', requires=(IS_SLUG(),
IS_NOT_IN_DB(db, 'album.name'))),
Field('artist_id', 'reference artist'), ### HERE ###
Field('album_art', 'upload'),
Field('chapter', 'integer', requires=IS_NOT_EMPTY()),
Field('act', 'integer', default=0),
Field('release_date', 'date', requires=IS_NOT_EMPTY()),
Field('num_of_tracks', 'integer', default=0),
auth.signature)
db.album.artist_id.requires = IS_IN_DB(db, 'artist.id', '%(name)s')
I expected the form to insert the album, the same way that the artist form did.
I know the reference is causing the issue and I would really appreciate if anyone could help me see my errors.
The latest Firefox Developer Edition is having issues with Web2Py.
I switched to Chrome and everything works.
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