[Zope3-Users] Re: Should I be using a more basic form in Formlib than EditForm?

Adam Summers Sat, 30 Dec 2006 03:48:27 -0800

Once more, with formatting:

Hi all,

I have an edit form:

class claimEditForm(form.EditForm): form_fields = form.Fields(Iclaim).omit('__name__', '__parent__') @form.action(_("MyApply"), condition=form.haveInputWidgets) def handle_edit_action(self, action, data): if self.context.modify(data): self.status = _(u"Object Updated") else: self.status = _(u"No Changes")

The object has a modify method, which looks like this:

def modify(self, kw): fieldnames = getFieldNames(Iclaim) for k in kw.keys(): if k not in fieldnames: raise Invalid("Invalid Field to set: %s", k) else: field = Iclaim[k] field.validate(kw[k]) setattr(self, k, kw[k]) self._completeValues() ###This method calculates some missing data for the ###object (if possible) or raises an error Iclaim.validateInvariants(self) return True

The thing I don't understand is this: The invariant method I have in the interface is being called twice.

First Pass through, object passed to my invariant is of type:
   FormData: <zope.formlib.form.FormData instance at 0x3f07c10>
Call stack is:
   debug_call [publish.py:114]       __call__ [form.py:773]       update [form.py:740]       handleSubmit [form.py:683]       validate [form.py:720]       checkInvariants [form.py:504]       validateInvariants [interface.py:583]       claimInvariants [interfaces.py:39]
(In certain cases the data will be invalid, because I need to prep a few fields via claim._completeValues() )

Second Pass through, object passed to my invariant function is of type:
   claim: <as.claim.claim.claim object at 0x3591770>

Call stack is:

   debug_call [publish.py:114]
       __call__ [form.py:773]
       update [form.py:754]
       success [form.py:598]
       handle_edit_action [forms.py:23] (This is my action being called now!)
      modify [claim.py:42] (At this point in the code, the as.claim.claim.claim object has been modified with the contents of the form)
       validateInvariants [interface.py:583]
       claimInvariants [interfaces.py:39]

My question is: In order to not have the variants checked before my data is prepped, should I really be using a form.EditForm as the base, or some other class?

Many thanks in advance, and a happy new year
Adam

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[Zope3-Users] Re: Should I be using a more basic form in Formlib than EditForm?

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