[Zope] Re: Output only the first or a particular record using TAL

[Tres Seaver]

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Julian Yap wrote:
> Hi all,
> 
> I wanted to create something of a header using TAL and a Z SQL Method.
> 
> I have the following code where getCustomerLicenses is my Z SQL Method and
> it prints out the customer's full name with details:
> <tr tal:repeat="licenses container/getCustomerLicences">
>     <td><span tal:replace="licenses/full_name">full_name</span></td>
>     <td><span tal:replace="licenses/serial_number">serial_number</span></td>
> <!-- code continues with more details -->
> </tr>
> 
> In it's simplest form, how do I retrieve just the full_name of the first
> record using TAL.  I think I use tal:replace but I'm not sure.
> 
> I was along the lines of something like this:
> <tr tal:define="x container/getCustomerLicences">
>     <td tal:replace="x/full_name[0]></td>
> </tr>
> 
> But then I just get a TypeError.

You need to access the first record before asking for its attributes.
Also, path expressions don't play nicely with integer indexes, so you
need to use Python:

  <td tal:content="python: x[0]['full_name']" />

You can use 'tal:condition repeat/licenses/start' to test that you are
in the first pass through the loop.


Tres.
- --
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Tres Seaver          +1 202-558-7113          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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