Need more than one value to unpack?
Chris Curvey
trace ending in:
File "/usr/lib/python2.5/site-packages/Genshi-0.4.4-py2.5.egg/genshi/
template/base.py", line 432, in _eval
for event in substream:
File "/usr/lib/python2.5/site-packages/Genshi-0.4.4-py2.5.egg/genshi/
template/base.py", line 398, in _eval
for kind, data, pos in stream:
ValueError: need more than 2 values to unpack
Here's the controller code:
@expose(template="genshi:turbotown.templates.toscaPosts")
def toscaGrid(self, *args, **kwargs):
# set up the grid widget
from toscawidgets.widgets import forms
postFields = [('English','english'),
('Spanish', 'spanish')]
toscaGrid = forms.DataGrid(id="PostList", fields=postFields)
# set up the data to be displayed
class Post:
def __init__(self, english, spanish):
self.english = english
self.spanish = spanish
posts = [ Post("one", "uno"),
Post("two", "dos"),
Post("three", "tres")]
#pass it all back
return dict(posts=posts, toscaGrid=toscaGrid)
And here is the template that's exposed:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:py="http://genshi.edgewall.org/">
<xi:include href="toscasitetemplate.html" />
<head>
<title>ToscaWidgets Test Page</title>
</head>
<body>
<div id="main">
<div>
${toscaGrid.display(posts)}
</div>
</div>
</body>
</html>
This has got to be something simple, but I just can't see it.
Alberto Valverde
> I'm moving along, but still not quite there. Now I'm getting a stack
> trace ending in:
>
> File "/usr/lib/python2.5/site-packages/Genshi-0.4.4-py2.5.egg/genshi/
> template/base.py", line 432, in _eval
> for event in substream:
> File "/usr/lib/python2.5/site-packages/Genshi-0.4.4-py2.5.egg/genshi/
> template/base.py", line 398, in _eval
> for kind, data, pos in stream:
> ValueError: need more than 2 values to unpack
>
> Here's the controller code:
>
> @expose(template="genshi:turbotown.templates.toscaPosts")
> def toscaGrid(self, *args, **kwargs):
I assume you have tg.defaultview set to "kid" since you're explicitly
telling TG your template uses Genshi, right?
If this is the case, TW believes it is displaying the grid on Kid so it
breaks when displaying it on Genshi. There are a two solutions, use the
one you see fits best in your scenario (depends on the templating
language you use most in your app to render pages)
1) set tg.defaultview = "genshi" in your config.
2) When displaying the grid, pass it the displays_on parameter:
${grid(data, displays_on="genshi")}
Alberto
Chris Curvey
not get the "displays_on" method to work. If tg.defaultview is not
explicitly set (which is the default configuration for quickstarted
projects, AFAICT), OR if it is set to "kid", I get a stack trace. Not
a problem though, as the point of the exercise at this point is to get
things working with Genshi and TW.
Many thanks, once again.
-Chris
Alberto Valverde
Really? That *should* work (it is heavily unit-tested). Are you passing
it when initializing the grid instance or when displaying it? It only
works when displaying it.
If tg.defaultview is not
> explicitly set (which is the default configuration for quickstarted
> projects, AFAICT), OR if it is set to "kid", I get a stack trace. Not
> a problem though, as the point of the exercise at this point is to get
> things working with Genshi and TW.
>
> Many thanks, once again.
No problem :)
Alberto
Chris Curvey
like.