You can already set a default Field(...,requires=IS_IN_SET
(...),default='value')
On Sep 5, 5:44 am, Iceberg <iceb...@21cn.com> wrote:
> On Sep5, 5:25pm, Fran <francisb...@googlemail.com> wrote:
>
>
>
> > On Sep 5, 5:58 am, Iceberg <iceb...@21cn.com> wrote:
>
> > > 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='')]
>
> > Nice idea, however, sometimes we do want the 1st option to be a
> > default (since it's by far the most common option) & not make people
> > select every time they're entering data....so this behaviour should be
> > optional.
> > Also, in order not to break backward-compatibility, this optional flag
> > should default to off.
>
> > F
>
> Thanks for the comments anyway. I would like to give a scenario why
> better make people select every time they're entering data. In a
> bookshop selling Bible of different language, the clerk inputs book
> orders all day long. 99% customers buy English edition of Bible, yet
> some customers order Chinese edition or Italian edition etc. If our
> order system has "English" as default value in the language field, my
> one year observation told me the clerk would hardly remember to change
> language field because he used to ignore that field at all for
> previous 99 times. Think about Murphy's law: "Anything that can
> possibly go wrong, does." It is a valuable lesson.
>
> On the other hand, my proposal does not prevent you from explicitly
> using default value at all. If you insist, you can still define
> default value as always:
> Field('language',
> requires=IS_IN_SET(['English','Chinese','Italian']),
> default='Italian') # the default value need not even be the first
> one
> And you know what? In my patch, the initial blank will be
> automatically hidden if you defines a default value. See the "if
> value" clause of my patch.
>
> After all, my proposal does not introduce any new syntax. Old apps can
> benefit from it, and can easily bypass it if insist. What more can you
> expect for? :-)
>
> Sincerely,
> Iceberg
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