you must user SELECT and not TAG.SELECT. The former is derived from INPUT an knows how to process options, tha latter is simply derived from a DIV and does not.
On Apr 17, 1:08 pm, Iceberg <iceb...@21cn.com> wrote: > Hi Denes and/or Massimo, > > I just pick up this old post > fromhttp://groups.google.com/group/web2py/browse_frm/thread/971433920541935a > > I used the code suggested by Denes, e.g. using TAG.SELECT and > TAG.OPTGROUP. > > The code shows proper drop-down box but, after form.accepts(...) the > form.vars.my_field seems always None. > > def test_code(): > OG=TAG.OPTGROUP > g1=[ OPTION( r, _value=r ) for r in [23, 24, 25] ] > g2=[ OPTION( r, _value=r ) for r in [32, 33, 34] ] > ogs=[OG(_label='30 and under',*g1),OG(_label='over 30',*g2)] > sel = TAG.SELECT(_name='person', *ogs) # DO NOT USE > sel=SELECT(...) > form=FORM( sel, INPUT(_type='submit') ) > if form.accepts(request.vars,keepvalues=True): > response.flash = 'got %s' % form.vars.person # Why always got > none? > return dict(form=form) > > Question: What need I change to make form.vars.my_field work when > using TAG.SELECT()? > > By the way, in case some people might ask why bother, why not just use > request.vars.my_field instead, well, it is just my personal best- > practice because form.vars.my_field usually contains data qualified by > validators, therefore more precisely than request.vars.my_field. Think > about this: > define_table('my_table',Field('my_field', requires=IS_UPPER())) > form = SQLFORM(db.mytable) > and input "hello world", then > request.vars.my_field=="hello world" > but > form.vars.my_field=="HELLO WORLD" > usually form.vars.my_field contains what I really need. > > Regards, > Iceberg > > On Feb18, 12:48am, DenesL <denes1...@yahoo.ca> wrote: > > > So for future reference: > > > you can create OPTGROUPs with TAG.OPTGROUP > > but do NOT use it with the SELECT helper, > > you must use TAG.SELECT as in the following example: > > > def index(): > > OG=TAG.OPTGROUP > > g1=[ OPTION( r.name, _value=r.id ) for r in > > db(db.person.age<=30).select() ] > > g2=[ OPTION( r.name, _value=r.id ) for r in > > db(db.person.age>30).select() ] > > ogs=[OG(_label='30 and under',*g1),OG(_label='over 30',*g2)] > > sel = TAG.SELECT(_name='person', *ogs) > > # DO NOT USE sel=SELECT(_name='person',*ogs ) > > f=FORM( sel ) > > return dict(f=f) > > > Denes.
