[Zope] silly DTML question: "in" test

Garry Saddington garry at schoolteachers.co.uk
Wed Nov 28 14:31:38 EST 2007

> if foo in (select foo_col from table where x=y)
> then z='t'
> else z='f'
> I tried putting the simple SELECT query into a zSql and then calling it
> like:
> <dtml-call "REQUEST.set('foo_list',IfShowNextDoor())">
> <dtml-if expr="foo in foo_list">
> 	<dtml-call "REQUEST.set('z','t')">
> <dtml-else>
> 	<dtml-call "REQUEST.set('z','f')">
> </dtml-if>
How about checking the database table for foo rather than the result set:

ZSQL method name=select
select foo_col from table where foo_col =<dtml-sqlvar foo type="string">

then do:
<dtml-in select>
<dtml-call "REQUEST.set('z','t')">
> <dtml-else>
> 	<dtml-call "REQUEST.set('z','f')">
> </dtml-in>

If the variable is in table then dtml-in returns a result set and the 
<dtml-call "REQUEST.set('z','t')"> is called, if not the dtml-else is called.


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