Here you go. You will need to force it to render with
SQLFORM.widgets.options.widget because IS_IN_SET won't render as a
dropdown when used with other validators. In your model:
db.page_articles.placement.widget = SQLFORM.widgets.options.widget
if request.vars.page and request.vars.placement:
existing = db((db.page_articles.page==request.vars.page)&
(db.page_articles.placement==request.vars.placement))
db.page_articles.placement.requires = [IS_IN_SET(range
(1,21)),IS_NOT_IN_DB(existing, 'page_articles.placement')]
On Sep 22, 9:55 pm, Jason Brower <encomp...@gmail.com> wrote:
> Woah... way beyond me here.
> My tables are like this...
> ---
> db.define_table('page',
> Field('name', 'string', length=25),
> Field('description', 'text'),
> Field('created', 'datetime', default=now, readable=True,
> writable=False))
>
> db.define_table('article',
> Field('title', 'string', length=25),
> Field('text', 'text'),
> Field('media', 'upload', autodelete= True),
> Field('created', 'datetime', default=now, readable=True,
> writable=False),
> Field('types', requires=IS_IN_SET(['One', 'Two', 'Three'])),
> Field('columns', requires=IS_IN_SET(['One', 'Two', 'Three'])),
> Field('author',
> requires=IS_IN_DB(db,db.author.id,'%(full_name)s')))
>
> db.define_table('page_articles',
> Field('page', requires=IS_IN_DB(db,db.page.id,'%(name)s')),
> Field('article',
> requires=IS_IN_DB(db,db.article.id,'%(title)s')),
> Field('placement', requires=IS_IN_SET(range(1,21)))
> ---
> By how do I declare the request.var.page and request.var.placement in
> the model. Should it be the the controller?
> If so here is that page just in case....
> ---
> def page_creator():
> if len(request.args):
> pages = db(db.page_articles.id==request.args[0]).select()
> if len(request.args) and len(pages):
> page_form = SQLFORM(db.page_articles, pages[0], deletable=True)
> else:
> page_form = SQLFORM(db.page_articles)
> if page_form.accepts(request.vars, session):
> response.flash = 'Action Commited Succesfully'
> elif page_form.errors:
> response.flash = 'Hmmm, something went wrong.'
> all_pages = db((db.page.id==db.page_articles.page) &
> (db.article.id==db.page_articles.article))
> return dict(page_form=page_form, all_pages=all_pages)
> ---
> Thanks in advance guys,
> Jason
>
> On Tue, 2009-09-22 at 12:55 -0700, mr.freeze wrote:
> > If you can describe your constraint with as a DAL set, you can pass it
> > to IS_NOT_IN_DB. Maybe something like this?
>
> > existing = db((db.page.number==request.vars.page)&
> > (db.placement.code==request.vars.placement))
> > db.article.number.requires = IS_NOT_IN_DB(existing,'article.number')
>
> > On Sep 22, 12:59 pm, Jason Brower <encomp...@gmail.com> wrote:
> > > I have three major fields in a table:
> > > Page, Article and Placement
> > > I want to make sure that the placement is unique to that article
> > > so...
> > > Page1, Article1, 1
> > > Page2, Article2, 1
> > > Page1, Article3, 2
> > > But it will not alow placement of...
> > > Page1, Article4, 1
> > > or...
> > > Page1, Article1, 3
>
> > > I hope that makes sence.
> > > Regards,
> > > Jason Brower
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