Thanks for the answers. The example was from the Zope Book. employee_by_id -> Z SQL Method emp_id -> Parameter key for employee_by_id 2 -> Parameter value for emp_id The result of employee_by_id(emp_id=2) is a SQL result. viewEmployee -> DTML Method viewEmployee will use the result of the above employee_by_id Z SQL Method and render the variables first,last and salary to HTML, if I call the URL from a browser. But, giving the same URL employee_by_id/emp_id/2/viewEmployee as a tal expression like tal:content="structure employee_by_id/emp_id/2/viewEmployee" will render nothing. There is also no error messages. Do you know what happens? Thanks, Ferhat --- Garito <garito@sistes.net> wrote:

Ferhat Ayaz escribió:

...

Hi list,

I'm a newby to zope. Sorry if the question is to dummy. Here my question:

You can do acquisition on URL like

http://localhost:8080/employee_by_id/emp_id/2/viewEmployee

...

here the result of employee_by_id (param is

emp_id=2)

...

is used by viewEmployee.

But I want to use it in a page template like

<td tal:content= "structure mployee_by_id/emp_id/2/viewEmployee"> </td>

Unfortunatly this will not work like the above example.

Is it possible to do acquisition in this way, or is there a way to this?

Thanks, Ferhat

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At this point if employee_by_id is the first param then all are on traverse_subpath list like:

['employee_by_id', 'emp_id', 2, 'viewEmployee']

then you could use this list to know what your user is asking for

Sorry for my poor english

-- Mis Cosas http://blogs.sistes.net/Garito

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wow. Thanks. This is exactly that what I need. :) --- Dieter Maurer <dieter@handshake.de> wrote:

Ferhat Ayaz wrote at 2006-8-28 11:06 -0700:

...

Here my question:

You can do acquisition on URL like

http://localhost:8080/employee_by_id/emp_id/2/viewEmployee

...

here the result of employee_by_id (param is

emp_id=2)

...

is used by viewEmployee.

But I want to use it in a page template like

<td tal:content= "structure mployee_by_id/emp_id/2/viewEmployee"> </td>

Unfortunatly this will not work like the above example.

The reason for this different behaviour is that a ZSQL method uses a traversal hook to implement the "<method>/<parameter>" feature. This traversal hook is only activated during URL traversal but not for path expression evaluation.

Fortunately, you do not need this hook in TALES. You can instead use a Python expression to call the ZSQL Method explicitely:

<td tal:content=" structure python:employee_by_id(emp_id=2).viewEmployee() " />

This will work only (reliably) when "viewEmployee" is a PageTemplate (not a DTML object).

For a DTML object "viewEmployee" you could use:

<td tal:define="employee python:employee_by_id(emp_id=2)" tal:content="employee/viewEmployee" />

You find the reason for this strange DTML object behaviour in the "Calling DTML objects" section of

<http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html>

-- Dieter

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