It seems I discovered an issue with handling Unicode strings in the
WebHelpers version 0.2.1 (Pylons 0.9.2) which causes problems with
methods such as h.text_field().
When testing with Japanese and other "exotic" characters, I ended up
with error messages similar to:
> Error(UnicodeEncodeError): 'ascii' codec can't encode characters in position
> 0-7: ordinal not in range(128)
I finally tracked down the cause of this problem to
webhelpers/rails/tags.py [1], around line 77, which reads:
> optionlist = ['%s="%s"' % (x, html_escape(str(y))) for x,y in
> cleaned_options.iteritems()]
where it should:
> optionlist = ['%s="%s"' % (x, html_escape(y)) for x,y in
> cleaned_options.iteritems()]
html_escape() is located in webhelpers.util package [2], and it takes
care of a) stringifying all non-string objects to strings and b)
"properly" encoding Unicode strings into ASCII representations itself
(basically, via "<unicode string>.encode('ascii',
'xmlcharrefreplace')").
The str(y) call in tags.py's list comprehension is not so clever, and
will break WebHelpers functions such as h.text_field() when called with
Unicode strings as values. I checked whether the faulty line in tags.py
has been corrected after 0.9.2 but it is still included in the trunk.
Michael
Note: I admit that I'm not sure whether the "issue" described above is
rather a feature, and not a bug. :-)
[1] http://pylonshq.com/svn/WebHelpers/trunk/webhelpers/rails/tags.py
[2] http://pylonshq.com/svn/WebHelpers/trunk/webhelpers/util.py
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