I just looked at the code but I cant see how did you solved this, I am
having the exact problem on another custom widget.
I want a field where users will put recipe ingredients separated by new
lines
*The field*
Field("ingredients", "list:string", requires=LINE_SEPARATED_LIST(),
widget=ListTextWidget.widget)
*on form it is*
*
*
<textarea>------------------
Ingredient number 1
Ingredient number 2
...
...
-------------------------------
*To validate that textarea I created this:*
class LINE_SEPARATED_LIST(object):
def __init__(self, error_message="value %s is invalid", sep="\n"):
self.error_message = error_message
self.sep = sep
def __call__(self, value):
items = value.split(self.sep)
return ([item.strip().replace("\r","") for item in items], None)
*And this widget to create the text area from stored list*
class ListTextWidget(FormWidget):
_class = 'text'
@classmethod
def widget(cls, field, value, **attributes):
if value:
value = "\n".join(value)
else:
value = ''
default = dict(value = value)
attr = cls._attributes(field, default,
**attributes)
return TEXTAREA(**attr)
*The problem is that after validation with errors, the text area becomes:*
<textarea>------------------------------------------------------
['Ingredient number 1', 'Ingredient number 2', ...]
-------------------------------------------------------------------
--
