this works for me in trunk, sqlite database: requires = IS_IN_SET([2,3,5,7]) for a field of type integer so the book text about "must be strings" doesn't seem to be always true.
and you're correct, if you use a list of validators and if you want the form to show a dropdown OPTION element, the IS_IN_SET needs to be first. The book is flat out wrong in the example so I'll send the PR to fix it and come back to when integer IS_IN_SET lists are acceptable. On Saturday, 15 February 2014 08:18:39 UTC+11, Horst Horst wrote: > > Meta-question: Should I rather post things like this to the issue tracker? > > 1. In > http://web2py.com/books/default/chapter/32/07/forms-and-validators#Validators, > > the paragraph "IS_IN_SET" says: > > The elements of the set must always be strings unless this validator is > preceded by IS_INT_IN_RANGE (which converts the value to int) or > IS_FLOAT_IN_RANGE (which converts the value to float). For example: > > > requires = [IS_INT_IN_RANGE(0, 8), IS_IN_SET([2, 3, 5, 7], > error_message='must be prime and less than 10')] > > This doesn't work for me in this case: > > requires = [ > IS_INT_IN_RANGE(0, 4), > IS_IN_SET([ > (0, T("<Option 1>")), > (1, T("<Option 2>")), > (2, T("<Option 3>")), > (3, T("<Option 4>")), > ] > ), > ], > > I get a ticket: > > <type 'exceptions.SyntaxError'> widget cannot determine options of > piece.piece_type > > and it seems web2py tries to derive the options from the first validator: > > if hasattr(requires[0], 'options') > > Changing the order in my code indeed works: > > requires = [ > IS_IN_SET([ > (0, T("<Option 1>")), > (1, T("<Option 2>")), > (2, T("<Option 3>")), > (3, T("<Option 4>")), > ] > ), > IS_INT_IN_RANGE(0, 4), > ], > > So should the book perhaps say: > > The elements of the set must always be strings unless this validator is > *followed* by IS_INT_IN_RANGE (which converts the value to int) or > IS_FLOAT_IN_RANGE (which converts the value to float). > > > ? > > 2. In http://www.web2py.com/book/default/chapter/10#JSONRPC-and-Pyjamasthis > part of the code example > > <script language="javascript" > src="{{=URL('static','output/pygwt.js')}}"> > </script> > > for more recent versions of pyjs should be changed to > > <script language="javascript" > src="{{=URL('static','output/bootstrap.js')}}"> > </script> > > However, JSONRPC in pyjamas 0.8.x is broken (due to this problem: > http://osdir.com/ml/python-pyjamas-devel/2012-04/msg00246.html), and it > doesn't look like it'd be fixed any time soon (or ever). > > I'd suggest to put a note on top of this chapter, to discourage people > from trying it until pyjs development is continued, and there's a newer > version than 0.8.1a. > > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
