[Seaside] sending messages in lists

Avi Bryant avi@beta4.com
Mon, 3 Jun 2002 17:25:46 -0700 (PDT)

On Mon, 3 Jun 2002, Tim Rowledge wrote:

> > <li sea:id="each/practiceTest">...  [remainingTries:] </li>
> What would be wrong with allowing
> <li sea:id="each/practiceTest">...  [remainingTries:each] </li>
> or something similar? The parsing only needs to be able to pick up on
> the local var name for this repeat (and any parents I suppose) which
> ought not be much more difficult than all the work it does already,
> surely?

Ah, it's a fine line... what about [remainingTries: each foo]?
[remainingTries: (each foo sortedBy: bar)]?  Do you only allow that for []
strings, or do you also allow it for something like
<if sea:id="anyTriesLeft:each">?  These aren't rhetorical questions, I
just see danger ahead.

I've even considered going much further down that road by changing the
template parser to output sourcecode instead of an element tree; each
element type would then become a sort of macro, and instead of using
special template locals you'd just use block temps.  So a template like

<li sea:id="each/practiceTest">
<a sea:id="chooseTest:each">foo</a>

would generate something along the lines of

self practiceTest do:
  [:each |
  stream nextPutAll: '<li>'.
  stream nextPutAll: '<a href='.
  stream nextPutAll: self urlFor: [self chooseTest: each] fixTemps.
  stream nextPutAll: '>foo</a>'.
  stream nextPutAll: (self remainingTries: each).
  stream nextPutAll: '</li>']

The tricky part would be integrating bindings/handlers with this.  That
is, how do you override the defaults?  By specifying strings of source
code to be inserted?