Using Integer type with SelectWidget renders wrong selected values

[domenkozar]

Test case: https://gist.github.com/2225789

You will see first schema does not have selected value in output html, while second example does.

[dnouri]

From SelectWidget doctstring:

values
    A sequence of two-tuples (both values must be **string** or
    **unicode** values) indicating allowable, displayed values,
    e.g. ``( ('true', 'True'), ('false', 'False') )``.  The first
    element in the tuple is the value that should be returned when
    the form is posted.  The second is the display value.

I guess it'd be helpful to add a type check in SelectWidget.__init__. I've been bitten by this myself.

[domenkozar]

What would be the reason not to convert it to unicode if parameter is not instance of basestring?

[mcdonc]

I wouldn't be against converting a subset of types to str automagically (int is the only one I can really think of right now), but I wouldn't want the thing to try to convert any-old-thing to str, because that logic gets really desperate after a while and would end up causing even more confusion.

[dnouri]

Added a test to deformdemo in Pylons/deformdemo@740ae1f

[mcdonc]

You rock.

[dnouri]

Argh, silly. My fix will break when first value is non-ascii unicode. Will fix tomorrow.

I will nevertheless accept the compliment. ;-)

[JDeuce]

Note there was a similar problem with RadioChoiceWidget, that the above commit patches.

[mcdonc]

This turned out to be a bad idea, because for template code like this:

   <option tal:repeat="(value, description) values"
           tal:attributes="selected value in cstruct and 'selected';
                           class field.widget.css_class"
           value="${value}">${description}</option>

the 'value' above will be a string after normalization while the item in cstruct might be an integer. This is kind of a clusterfuck at this point because it was done so long ago, but I may need to revert it, because I can't think of a sane way to leave it the way it is.

[mcdonc]

Nope, it's even more clusterfucked than just reverting. I'll keep it as-is for now and cope.