[Zope3-Users] z3c.form / TextLine-Schema in List-Schema

[Hermann Himmelbauer]

Am Sonntag, 2. September 2007 18:26 schrieb Markus Leist:
> Hi list,
>
> z3c.form has a very generic, well approach - but at the moment it's to
> complicated to me.
>
> I have an interface defined like:
>
> 100 	    osList = List (
> 101 	        title = _("operating systems"),
> 103 	        value_type = TextLine(
> 105 	            title = _("Operatingsystem"),
> 107 	            default = u"",
> 108 	            required = False),
> 109 	        required = False)
> [originally from
> http://trac.ict-ok.org/browser/trunk/org/ict_ok/components/host/interfaces.
>py ]
>
> when z3c.form will do his update, i'll get a
>
> ComponentLookupError: (
>   (<zope.schema._field.List object at 0x989054c>,
>    <zope.schema._bootstrapfields.TextLine object at 0x989090c>,
>    <zc.resourcelibrary.publication.Request instance
> URL=http://localhost:8081/cc071bd954f8fd7b3fccf9fab2b1c7b58/add_host.html>)
>, <InterfaceClass z3c.form.interfaces.IFieldWidget>, u'')
> [full trace on http://paste.lisp.org/display/47105 ]

I think I know that one: Your request object hast to be marked with the 
appropriate interface, in this case it's IFormLayer.

I recommend you to have a decent look at z3c.formdemo.

To sum my z3c.form-experience up: In the beginning it's quite hard and 
complicated, although the documentation is good. One has to deeply understand 
the component-based software design (Interfaces, Adapters etc.) and other 
packages (e.g. pagelets). However it pays off later on, because other 
alternatives (e.g. formlib) are too limiting for many use cases.

Best Regards,
Hermann

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