I think this would do it:
Index: gluon/sqlhtml.py
===================================================================
--- gluon/sqlhtml.py (revision 1196)
+++ gluon/sqlhtml.py (working copy)
@@ -167,11 +167,14 @@
:param field: the field needing checking
:returns: True if the field has options
"""
+ requires = field.requires
+ if not isinstance(requires, (list, tuple)):
+ requires = [requires]
+ requires0 = requires[0]
+ return hasattr(requires0, 'options')\
+ or isinstance(requires0, IS_NULL_OR)\
+ and hasattr(requires0.other, 'options')
- return hasattr(field.requires, 'options')\
- or isinstance(field.requires, IS_NULL_OR)\
- and hasattr(field.requires.other, 'options')
-
@staticmethod
def widget(field, value, **attributes):
"""
@@ -602,7 +605,11 @@
else:
inpval = ''
elif OptionsWidget.has_options(field):
- if not field.requires.multiple:
+ requires = field.requires
+ if not isinstance(requires, (list, tuple)):
+ requires = [requires]
+ requires0 = requires[0]
+ if not requires0.multiple:
inp = self.widgets.options.widget(field, default)
else:
inp = self.widgets.multiple.widget(field,
default)
On Sep 5, 3:00 am, "mr.freeze" <nat...@freezable.com> wrote:
> I think SQLFORM should be changed to allow for IS_IN_SET with other
> validators then you could just do:
> requires=[IS_IN_SET(['','English','Chinese','Italian']),IS_NOT_EMPTY
> ()]
>
> Or you could get fancy:
> requires=[IS_IN_SET(['Please
> choose...','English','Chinese','Italian']),IS_EXPR("str(value) !=
> 'Please choose...' ")]
>
> It could just be a convention that requires[0] is IS_IN_SET (similar
> to how IS_NULL_OR works currently).
>
> On Sep 4, 11:58 pm, Iceberg <iceb...@21cn.com> wrote:
>
> > Hi Massimo,
>
> > My first web2py app is an order management system for my company, it
> > worked well in enterprise production for more than 15 months now. By
> > the way, all my other "first work of something" ended up as just a
> > prototype but not this one, thank god and web2py. I am refactoring the
> > app and going to share some ideas. Here comes the first one, about UI/
> > UE aspect.
>
> > Currently, if we write code like this:
> > db.Field('language', requires=IS_IN_SET
> > (['English','Chinese','Italian']))
> > it generates a drop-down list for three choices and the "English"
> > appears as the first option.
>
> > It is ok but, according to my long time observation, users who are
> > facing a long form with dozens of fields, tend to finish each blank
> > field one by one, but won't give enough attention to fields showing a
> > default value. So it would be much better if the above example can be
> > rendered as a drop-down list with 4 choices: an initial blank, then
> > English, Chinese, Italian. Currently this can be done by:
> > db.Field('language', requires=IS_NULL_OR(IS_IN_SET
> > (['English','Chinese','Italian'])))
> > but with a side effect that the empty value is also acceptable,
> > sometimes not what we want.
>
> > So my proposal is to adjust OptionsWidget to always show up with an
> > initial blank (when creating record), but not necessarily accepting
> > it. Just change line 198 of sqlhtml.py from:
> > opts = []
> > to:
> > if value:
> > opts = []
> > else: # To enforce an explicit choice when creating new record
> > opts = [OPTION(_value='')]
>
> > Please give it a try and hope you will like it.
>
> > Regards,
> > Iceberg
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