It works for SQLFORM, not FORM. The FORM structure is too open and
customizable. web2py would not know where to add it.
On Thursday, 26 September 2013 04:52:44 UTC-5, Cliff Kachinske wrote:
>
> add_button is a method of FORM(). But I'm not sure it works as the
> following shows:
>
> cjk@debian:~/pybin/web2py-src/web2py$ python
> Python 2.7.3 (default, Jan 2 2013, 13:56:14)
> [GCC 4.7.2] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> from gluon import html
> >>> simpleform = html.FORM(html.INPUT(_type="text", _name="mytext"))
> >>> simpleform.xml()
> '<form action="#" enctype="multipart/form-data" method="post"><input
> name="mytext" type="text" /></form>'
> >>> # Now comes an exception
> ...
> >>> simpleform.add_button('foo', html.URL('bar', 'baz', 'foo'))
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "gluon/html.py", line 2216, in add_button
> submit.parent.append(
> AttributeError: 'NoneType' object has no attribute 'parent'
> >>>
> >>> # Now we fix the exception
> ...
> >>> simpleform.append(html.INPUT(_type='submit'))
> >>> simpleform.xml()
> '<form action="#" enctype="multipart/form-data" method="post"><input
> name="mytext" type="text" /><input type="submit" /></form>'
> >>>
> >>> # Now add_button will appear to work
> ...
> >>> simpleform.add_button('foo', html.URL('bar', 'baz', 'foo'))
> >>>
> >>> #See, no exception. But look at this:
> ...
> >>> simpleform.xml()
> '<form action="#" enctype="multipart/form-data" method="post"><input
> name="mytext" type="text" /><input type="submit" /></form>'
> >>>
> >>> #Whiskey Tango Fox? Button doesn't seem to be there
>
>
>
> On Wednesday, September 25, 2013 1:17:37 PM UTC-4, wb wrote:
>>
>> Trying to generate a small form that is all buttons:
>>
>> def month-example:
>> months = {'January', 'February', 'March'}
>>
>> form = FORM()
>> for month in months:
>> # this fails
>> form.add_button(month, URL(month))
>> return dict(form=form)
>>
>> This generates 'NoneType' object has no attribute 'parent'.
>>
>> Creating links with helpers works:
>>
>> form += A( month, _href=URL(month) )
>>
>> But the form is a dictionary, and the months are out of order. I think
>> that add_button preserves the order, but have not verified that.
>>
>> Does add_button only work with SQLFORM?
>>
>> How can the order of elements added to a form programmatically be
>> controlled?
>>
>
--
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