[Zope3-Users] Re: How to extend File?

[jürgen Kartnaller]

Here is the code I used for testing :

---------------------------------------------------------------
f.py :

from zope.interface import Interface,implements
from zope.app.file.file import File
from zope.schema import TextLine

from zope.i18nmessageid import MessageIDFactory
_ = MessageIDFactory("test")

class IContentGuid(Interface):
	guid = TextLine(title=_('guid desc'))

class ContentBase(File):
	implements(IContentGuid)

---------------------------------------------------------------
configure.zcml :

<configure
     xmlns="http://namespaces.zope.org/zope"
     xmlns:browser="http://namespaces.zope.org/browser"
     i18n_domain='test'
     >

   <interface
       interface=".f.IContentGuid"
       type="zope.app.content.interfaces.IContentType"
       />

   <content class=".f.ContentBase">
       <implements
           interface="zope.app.annotation.interfaces.IAttributeAnnotatable"
           />
       <factory
           id="test.f.ContentBase"
           description="ContentBase"
           />
       <require
           permission="zope.ManageContent"
           interface=".f.IContentGuid"
           />
       <require
           permission="zope.ManageContent"
           set_schema=".f.IContentGuid"
           />
   </content>


   <browser:addform
       label="ContentBase hinzufuegen"
       name="AddContentBase.html"
       schema="test.f.IContentGuid"
       content_factory="test.f.ContentBase"
       permission="zope.ManageContent"
       />

   <browser:addMenuItem
       class="test.f.ContentBase"
       title="ContentBase"
       description="A ContentBase"
       permission="zope.ManageContent"
       view="AddContentBase.html"
       />

   <browser:editform
       schema="test.f.IContentGuid"
       for="test.f.IContentGuid"
       label="Change ContentBase"
       name="edit.html"
       permission="zope.ManageContent"
       menu="zmi_views" title="Edit"
       />

</configure>

Hope this helps.

Jürgen

John Toews wrote:
> With essentially the code below (I forgot the guid = '' in ContentBase) and the proper includes, I used the browser:addMenuItem directive in my configure.zcml. I can add an item but not manage it (clicking on it results in a ForbiddenAttribute error for 'contentType' on ContentBase).
> 
> I am wondering if I should be using the content directive in the zcml?
> 
> Or if I need my own __init__ in ContentBase?
> 
> Thanks!
> 
> -----Original Message-----
> From: zope3-users-bounces at zope.org [mailto:zope3-users-bounces at zope.org] On Behalf Of jürgen Kartnaller
> Sent: Thursday, November 18, 2004 2:00 PM
> To: zope3-users at zope.org
> Subject: [Zope3-Users] Re: How to extend File?
> 
> This works well for me.
> I used a configure.zcml by following Stephan Richters Zope 3 book.
> I'm now able to add a new file object with a guid field.
> 
> You should give us the traceback of the system error.
> 
> Jürgen
> 
> John Toews wrote:
> 
>>Hi all,
>>
>>I'm trying to do something I thought would be very simple. I think I 
>>don't understand the Component Architecture well enough...
>>
>>I want to take the base File and simply add a property to it (a string 
>>representing a guid). That's all, everything else would remain the same.
>>I've tried a couple different ways of doing:
>>
>>class IContentGuid(Interface):
>>	guid = TextLine(title=_('guid desc'))
>>
>>class ContentBase(File):
>>	zope.interface.implements(IContentGuid)
>>
>>And various configure.zcml setups. I can't really explain what's going 
>>wrong either. The best I've gotten is a link in the ZMI to 
>>ContentBase, which when clicked on will add an item, but after typing 
>>in a name and hitting Apply, a system error occurs. I think I'm just 
>>on the wrong track.
>>
>>Any ideas on what (all) I'm doing wrong?
>>Thanks!
>>John
> 
> 
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