SQLFORM col3 restrictions?

[Richard]

hello,

I am using the col3 argument to SQLFORM to add some data:
button = INPUT(_type='button', _value='test')
link = A('test', _href=URL(r=request, f='test'))
col3 = dict(name=button, project=link)
form = SQLFORM(db.model, col3=col3)

Strangely this works for links but not inputs. Inputs are not included
in the form - is there a reason for this? I am trying to add a button
to the form.
For now I am using the form[0][0][2].append(...) syntax but would
prefer to use the cleaner col3 argument.


Incidentally, could a HTML helper be added for BUTTON()? The CSS file
I use assumes I am using <button> rather than <input type='button'>.

thanks,
Richard

[mdipierro]

This is very strange I fixed it and I am uploading the fix to trunk
but I do not understand it.
It seems that if INPUT() is false (?!)

You can use TAG.BUTTON(...)

[Richard]

On Jun 1, 12:08 pm, mdipierro <mdipie...@cs.depaul.edu> wrote:
> This is very strange I fixed it and I am uploading the fix to trunk
> but I do not understand it.
> It seems that if INPUT() is false (?!)

that's weird.
I found it works it I do SPAN(INPUT(...))

>
> You can use TAG.BUTTON(...)

thanks!

[DenesL]

From the python 2.5 manual, library reference, 3.1:

"The following values are considered false:
...
instances of user-defined classes, if the class defines a __nonzero__
() or __len__() method, when that method returns the integer zero or
bool value False."

Both INPUT and A derive from DIV which has a __len__ method defined as
len(self.components).
INPUT's len is zero while A's is one, so combining than with the 'or'
in sqlhtml rev979 line 319 gives the above mentioned results.