[Cheetahtemplate-discuss] #return directive

[Tavis R. <ta...@re...>]

Hi,
I've just implemented the #return directive in the cvs.  Please be aware =
of=20
the difference between the return value and the 'stream output' as=20
illustrated by these two examples:

###
from Cheetah.Template import Template as T
print T("""
1
$str($test[1])
3
#def test
1.5
#if 1
#return '123'
#else
aoeuoaeu
#end if
#end def
""")
###

and=20

from Cheetah.Template import Template as T
print T("""
1
$str($test(trans)[1])
3
#def test
1.5
#if 1
#return '123'
#else
aoeuoaeu
#end if
#end def
""")

In the first example the stream output from the 'test' method is discarde=
d and=20
only the return value is used.  In the second example the 'test' method i=
s=20
passed the 'trans' object (aka Transaction) and thus all output from the=20
method is streamed out, not just the return value. =20

On a related note, there are major differences between the semantics of #=
stop=20
and #return.  With the #stop directive $test and $test(trans) are identic=
al.=20
The string output of the method is always streamed. Have a look at some=20
Cheetah generated code to see why.=20

Cheers,
Tavis

On June 29, 2002 04:30 am, rob...@ya... wrote:
> hi,
>
> building my java-generators more
> wishes poped up.
>
> first on my list, guess what is a new #directive. ;-)
> i would like to have a #return which does exactly
> what its python cousin does.
>
> the reason is simply the same as i have laid out
> in former mails. being able to do all work
> in simply one environment without the need to escape.
>
> any comments?
>
> ciao robertj
> ------------------------------------------------------------
> Robert Kuzelj
> Gaissacherstrasse 7           email: rob...@ya...
> 81371 Muenchen                tel:   0177/5302230
>
> the trinity of desirables of (software) architecture:
> Firmitas, Utilitas, Venustas (marcus vitruvius 20 BC)
> strength, utility, beauty
>
>
>
>
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