[albatross-users] can't figure out why it's flipping me the bird

[Matt Goodall]

On Thu, 2003-09-11 at 00:36, Eric S. Johansson wrote:
> started on another CGI script.  Obviously my knowledge is better and it went 
> much faster than the traditional naked python CGI but I'm still hitting a bit of 
> a roadblock.  In the spamtrap viewer I have a fragment of nicely working 
> albatross that looks like:
> 
> 
>      <al-if expr="line.value().checked=='on'">
>        <al-exec expr="albatross_token = line.value().token">
>      <al-else>
>        <al-exec expr="albatross_token = 'off'">
>      </al-if>
> 
>      <al-input type="checkbox" name="albatross_token" 
> valueexpr="line.value().token"  list onclick="CCA(this,'mystery');DownHalt();" >
>      <td>
> 
> 
> so now, in the configuration editing tool I have a similar problem (multiple 
> data elements of similar structure) so I figured I would use a similar structure:
> 
>      <al-exec expr="albatross_token=line.value().field_name">
>      <td><al-input type="text" name="albatross_token" size="50" maxlength="100" 
> valueexpr="line.value().variable">
> 	
> but all it does is give me...
> 
>     ApplicationError: al-input "albatross_token" not defined as "list"
> 
> I'm confused.  Is there an option I'm forgetting to set?

The error means that you have multiple al-input fields with the same
name, "albatross_token". There are two ways to fix that, depending on
what you are trying to do:

1. Add a 'list' attribute to the al-input element to allow more than one
al-input with the same name. The name will always be the string
"albatross_token".
2. Use a 'nameexpr' attribute rather than 'name' so that each al-input
has a different name. The name of the al-input will be the current value
of the albatross_token variable.

> 
> The only reason I'm trying to set the name is so I can identify each field and 
> determine whether or not has changed from the previous value so I will know 
> whether to write it out or not.

OK, I think you want 2 - use a 'nameexpr' attribute.

Cheers, Matt

-- 
Matt Goodall <matt at pollenation.net>