[Zope] <!--#in string or list--> problem

[Jim Fulton]

Philip Aylesworth wrote:
> 
> I am having a problem with a form that has check boxes on it. If several
> checkboxes are checked it works great. If only one is checked then it
> gives the following error:
> 
>   Traceback (innermost last):
> File lib/python/OFS/DTMLMethod.py, line 151, in __call__
>   (Object: editmanystatus.dtml)
> File lib/python/DocumentTemplate/DT_String.py, line 513, in __call__
>   (Object: editmanystatus.dtml)
> File lib/python/DocumentTemplate/DT_In.py, line 628, in renderwob
>   (Object: nums)
> InError: Strings are not allowed as input to the in tag.
> 
> I can see that it is because instead of a list it now has a single
> string but I don't know how to handle this. Is there a way to force an
> object to be a list whether it is a list or a single string?

Yes.  In your form, give the name a :list suffix:

  <input type=checkbox name="nums:list">

This forces creation of a list even if there is only one value.

Jim

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