[Zope3-Users] z3c.form and subforms in an AddForm?

[Marius Gedminas]

On Fri, Jun 15, 2007 at 10:52:24AM -0700, gnosis wrote:
> I've been trying out the new z3c form package and like what I see.  I am
> having problems getting a subform in an AddForm though.  The subform.txt
> covers EditForms where you have a context object to work on, in an AddForm
> the context is the underlying IContainer.

Really?  Usually in Zope 3 (zope.app.form or zope.formlib) the context
of an add form is the IAdding view.  To get the container you have to
use self.context.context.

> Here is what I have, using formdemo examples as the basis.  Any help on
> getting this to work is greatly appreciated.
> 
> IRestaurant with address attribute using schema.Object holding an IAddress.
> 
> browser/restaurant.py
> 
> class RestaurantAddForm(AddFormLayoutSupport, form.AddForm):
>     """Add form"""
>     
>     template = None
>     layout = None
>     contentName = None
>     label = u'Add Restaurant'
>     
>     fields = field.Fields(IRestaurant).omit('address')
>     
>     def update(self):
>         self.address = AddressAddForm(self.context.address, self.request) ##
> <---- Problem area

You did not say what the problem was.

I suspect that you ought to have a simple subform here (nor an add form,
since you're not going to add the address object into a container --
you're going to set it on an attribute; also not an edit form since the
address object doesn't exist yet).

I'm not familiar with z3c.form, but I'm betting that it follows the same
conventions as the older Zope 3 form modules.

>         self.address.update()
>         super(RestaurantAddForm, self).update()
>     
>     def create(self, data):
>         r = Restaurant()
>         r.name = data['name']
>         r.description = data['description']
>         r.address = data['address']
>         return r
>     
>     def add(self, object):
>         self._name = object.name
>         self.context[self._name] = object
>         return object
>     
>     def nextURL(self):
>         return absoluteURL(self.context[self._name], self.request)
> 
> 
> browser/address.py
> 
> class AddressAddForm(AddFormLayoutSupport, form.AddForm):
>     template = None
>     layout = None
>     contentName = None
>     label = u'Address'
>     
>     fields = field.Fields(IAddress)
>     prefix = u'address'
> 
> browser/configure.zcml
> 
>   <!-- Restaurant Add Form -->
>   <z3c:pagelet
>     name="addRestaurant.html"
>     for="zope.app.folder.interfaces.IFolder"
>     class=".restaurant.RestaurantAddForm"
>     layer="metrod.app.layer.IMetroDBrowserLayer"
>     permission="zope.Public" />
>   
>   <z3c:template
>     template="restaurant.pt"
>     for=".restaurant.RestaurantAddForm"
>     layer="metrod.app.layer.IMetroDBrowserLayer" />
> 
>    <!-- Address Add Form -->  
>   <z3c:pagelet
>     name="addAddress.html"
>     for="metrod.restaurant.interfaces.IAddress"
>     class=".address.AddressAddForm"
>     layer="metrod.app.layer.IMetroDBrowserLayer"
>     permission="zope.Public" />
>     
>   <z3c:template
>     template="address.pt"
>     for=".address.AddressAddForm"
>     layer="metrod.app.layer.IMetroDBrowserLayer" />

Marius Gedminas
-- 
Despite all appearances, your boss is a thinking, feeling, human being.
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