[Zope] how to accumulate data using ZPT

[Hugo Ramos]

On 5/20/05, Tino Wildenhain <tino at wildenhain.de> wrote:
> Am Freitag, den 20.05.2005, 09:52 +0100 schrieb Hugo Ramos:
> > Yellow,
> >
> > What DBMS are you using??? MySQL???
> > If so just have a sql method do this:
> > ==========
> > SELECT COUNT( '*' )  AS total
> > FROM yourtable
> > ==========
> 
> Are you sure about the ' '? looks strange.

It works both ways... With or without the ' ' !


> > Then call the variable total where you need it!
> >
> > Regards
> > hr
> >
> >
> > On 5/20/05, prabuddha ray <buddharay at gmail.com> wrote:
> > > I've this report wherein i've to print the column total iin last row.
> > > column values are from database.
> > > so far I'm a total loss. do i need to have cookies to store this total?
> 
> simplest solution if you need the data anyway:
> a python script where you do the zsql method
> 
> results=context.whateverZSQLMethod(args...)
> 
> return context.yourPageTemplate(results=results,count=len(results))
> 
> and use
> 
> tal:content="options/count" in the template where you need count.
> If its a sum you need, just work over your resultset or use a separate
> query.
> 
> Easiest to work over result set (especially if the select is costy)
> 
> 
> results=context.whateverZSQLMethod(args...)
> 
> total=0
> for item in results:
>    if item.value: # this handles the case of nulls
>        total+=item.value
> 
> and use the total as argument:
> 
> return context.yourPageTemplate(results=results,
>                                 count=len(results),
>                                 total=total)
> 
> 
> --
> Tino Wildenhain <tino at wildenhain.de>
> 
> 


-- 
Hugo Ramos - ramosh at gmail.com