The website I am replacing has a "third tier" of info -- it has the field 
label, the field comment, AND a popup (which can be more than one 
paragraph).  If I just store the extensive help in the comment field, I 
will lose the comment itself.  Anthony has opened my eyes regarding the 
comment field and how it can be used.

My main comment to you is -- extensible.  The design of webXpy needs to be 
easily extensible to accommodate changes we don't think of at the time we 
create the software.  The 4-tuple is a hard limit and it will forever 
constrain what we can do between Fields, SQLFORM, and formstyle.  If that 
were an object instead of a tuple it would be extensible and could handle 
unforeseen issues.

This is more of a philosophical comment that a proposal for any immediate 
change.  I know you are thinking about web3py and I wanted to make a case 
for keeping interfaces extensible instead of limited.  As you can no doubt 
tell, I'm reasonably new to this world of web programming but I've been 
doing Smalltalk programming professionally for 20 years.  In my Smalltalk 
job I have also used the pattern of "tuples" (arrays) to pass information 
between Smalltalk objects and it often needs overhauling at some point to 
accommodate changes.  

The simplest way to transfer the information is usually by handing over the 
object that has the info -- the Field in this case -- rather than making a 
tuple.  Handing the Field object itself costs nothing -- you don't even 
need to create and garbage-collect the tuple -- yet it opens the door to 
letting the formstyle access everything the Field knows.

But like I say, it breaks the "compatibility" contract between web2py and 
its users, which is an enormous strength of web2py and I would never 
suggest giving that up.  But one day there will come a time when it will be 
necessary to do a "python3" of our own.  When that day arrives, that would 
be the time to re-examine the interfaces inside web2py to see if they can 
be opened up.

-- Joe B

On Thursday, December 13, 2012 6:31:14 AM UTC-8, Massimo Di Pierro wrote:
>
> I am not not convinced we need both comment and help. I think one can 
> simply strore the commend in help (without being a dict) and use jQuery to 
> turn the visualization of the comment (help) into a popup.
>
>

-- 



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