[Zope] string crisis....

[Martijn Pieters]

At 16:38 08/09/99 , Arnaud Lecat wrote:
>id is ok for me... it contains the good string
>
>A simple display test for
>*<dtml-var mydocid>*<dtml-var id>*
>
>gives me
>*design*design*
>
>And <dtml-if "mydocid==id">blah blah</dtml-if> is not true !!! What's
>happening ?
>
>(* is for a purpose of display to see if there were some unwanted char in
>front or behind the string)

That is because <dtml-var id> will call the method id if id is a method. 
This is called a namespace lookup. So comparing anything to the method 
object 'id', will always evaluate to false.

Now, you could simulate the behaviour with _['id'], which will do a 
namespace lookup for the object called 'id', wether it is a string or a 
method, and will always, in this case, return a string.

You could do <dtml-if "mydocid==id()">, but then you'd make the test throw 
an exception for those objects where id _is_ a string. Using _['id'] will 
work in both cases: <dtml-if "mydocid==_['id']">

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Martijn Pieters, Web Developer
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