[Zope] Newbie: TAL Conditions

[Pascal Peregrina]

You could wrap each <td></td> in a <span tal:omit-tag=""
tal:condition=""></span>

The tal:omit-tag="" will prevent the <span></span> to be output in the
resulting HTML code.

Pascal


-----Message d'origine-----
De : zope-bounces at zope.org [mailto:zope-bounces at zope.org]De la part de
Tom_Rectenwald at carmax.com
Envoyé : mardi 7 décembre 2004 15:21
À : zope at zope.org
Objet : [Zope] Newbie: TAL Conditions



Hello all, 

I am a newbie at Zope, slowly traversing the learning curve.  I am focusing
on TAL currently, and am quite a bit confused with the tal:condition syntax.
I have a Z SQL Method that selects all records from a table in a PostgreSQL
database.  This method is called "getTransfers".  I then have a Page
Template called "displayTransfers" that displays the results as tabular
HTML. 

This works fine.  However, where there isn't a record (i.e. an empty
string), a <TD> will not be defined so that it leaves ugly gaps in the
table.  To ensure that a '<TD>&nbsp;</TD>' replaces an empty string '' I
added two tal:condition statements.  This works, but is sort of ugly looking
as, in my head, it is the equivalent of two 'if' statements when it should
be an 'if/else'.  The below code works, however is there a cleaner way to do
this? 

### START CODE ### 

<table border="1"> 
  <tr><th>Date</th><th>Server</th></tr> 
  <tr tal:repeat="transfer container/getTransfers"> 
    <td tal:content="structure transfer/time_stamp">time_stamp</td> 
    <td tal:condition="python: transfer.server==''">&nbsp;</td> 
    <td tal:condition="python: transfer.server!=''" 
        tal:content="structure transfer/server">server</td> 
  </tr> 
</table> 

### END CODE ### 

I'm from a PHP/Perl/mySQL/postgreSQL background and am new to OOP, Python
and Zope so I greatly appreciate any assistance with this. 

Regards, 
Tom


**********************************************************************
This email and any files transmitted with it are confidential and
intended solely for the use of the individual or entity to whom they
are addressed. If you have received this email in error please notify
the system manager.

This footnote also confirms that this email message has been swept by
MIMEsweeper for the presence of computer viruses.

www.mimesweeper.com
**********************************************************************