The model follows. Focus on the category.name field (and point out
anything else that looks wrong/inept). Looks like I have belt,
suspenders, and back-up suspenders for that field. I need
category.name to be unique and not empty. Is it the
requires=IS_NOT_EMPTY() that forces me to use IS_NOT_IN_DB instead of
unique=True?
Which is preferred so that postgresql enforces the constraints?
Thanks,
Lewis
jodb.define_table('joke',
Field('joketext', 'text',length=2048, requires = IS_NOT_EMPTY()),
Field('created_on', 'datetime', default=request.now),
Field('created_by', jodb.auth_user))
jodb.define_table('category',
Field('name', 'string', length=100, unique = True, requires =
IS_NOT_EMPTY()),
Field('created_by', jodb.auth_user) )
jodb.define_table('joke_category',
Field('joke', jodb.joke),
Field('category', jodb.category),
format = '%(name)s')
jodb.joke_category.category.requires = IS_IN_DB(jodb,jodb.category.id,
multiple=True)
jodb.category.name.requires = IS_NOT_IN_DB(jodb,jodb.category.name)
jodb.auth_user._format = '%(first_name)s %(last_name)s'
On Feb 9, 2:06 pm, Anthony <[email protected]> wrote:
> On Thursday, February 9, 2012 1:28:28 PM UTC-5, Lewis wrote:
>
> > Then why did web2py fail with a run time error? Or why wasn't the run
> > time error trapped? Maybe because I had requires on the same table
> > for a different constraint?
>
> I assume there must be an explicit "requires" attribute set for that field
> somewhere, so the automatic setting of "requires" isn't happening. You'll
> have to show more code.
>
> > It doesn't look good when visitors to your site see the web2py error
> > ticket page.
>
> You can generate friendly error pages --
> seehttp://web2py.com/books/default/chapter/29/4#Routes-on-error. The error
> page can be a static file, or a dynamically generated page. In the latter
> case, it might be safer to have the error handler in a separate error
> handling application -- that way if the error happens to be in a model file
> of your main app, it won't prevent the error handler from being reached.
>
> Anthony
