[Zope] creating instances of products "programmatically"

[hans]

> Hi,
>
> I've got a Product question that I just haven't been able to answer
> using the documentation I can find.
>
> I've developed a Product called RDJM_JobImpl following the general
> procedure in the Developers Guide.  The product class is defined so:
>
> class RDJM_JobImpl(Implicit,Persistent,RoleManager,ObjectManager)
>
> I've got enough stuff working so that I can add the product from the
> manage screen and the guts of the product itself work swimmingly.
>
> What I'd really like to be able to do is create instances of this
class
> programmatically (either through scripts or DTML methods or whatever)
> instead of through the management interface.
>
> This I cannot figure out how to do.  Pointers to the appropriate
> documentation would be greatly appreciated.
###################################################################
well, i have:
############################################# File JumpTabs/Tabs.py
class Tabs(SimpleItem.SimpleItem):
#.... many lines omitted
#-----------------------------------------------------------
# product instantiation
############################################# File JumpTabs/Tabs.py
manage_addTabsForm = DTMLFile('manage_addTabsForm', globals())
 # init instance Tabs(id, title) via webform

def manage_addTabs(dispatcher, id, title=default_title, render=0,
REQUEST=None):
 """Folder add(Tabs)"""
 tabs = Tabs(id, title)
 dispatcher.Destination()._setObject(id, tabs) # add tabs to destination
folder

 if render:
  tabs = dispatcher.Destination()._getOb(id) # in render absolute_url
needs this

  dtml_text = tabs.render_show_dtml()
  dtml_name = id+'_show_tabs' # avoids name clashes
  dispatcher.manage_addDTMLMethod(id=dtml_name, file=dtml_text,
title=title)

 if REQUEST is None: # alt: else: self.manage_main(self, REQUEST)
  return
 try:
  u = dispatcher.DestinationURL()
 except:
  u = REQUEST['URL1']

 REQUEST.RESPONSE.redirect(u + '/manage_main')
############################################# File __init__.py
import Tabs

def initialize(context):
 """init Tabs product. Makes Tabs  appear in the add product list"""
 context.registerClass(
  Tabs.Tabs,
  constructors = (
   Tabs.manage_addTabsForm, # browser add Tabs product, hook into ZMI
   Tabs.manage_addTabs,  # program add Tabs product
  ),
  icon = 'pics/Tabs.gif'
 )

<dtml-comment>########### DTMLDoc manage_addTabsForm.dtml
</dtml-comment>
<snip>
<form name="form" action="<dtml-var URL1>"><br>
   <tr>
      <td><b>Id</b> (required):</td>
      <td><input type="text" name="id:required" value="JT"
size="30"></td>
   </tr>
   <tr>
      <td><b>Title</b>:</td>
      <td><input type="text" name="title:string" size="30"></td>
   </tr>
   <tr>
      <td><b>Render?</b>:
          <input type="hidden"   name="render:int:default" value="0"  >
      </td>
      <td>
          <input type="checkbox" name="render:int" checked value="1"
          >&nbsp; render show_tabs.DTML in same folder?
       </td>
   </tr>
   <tr>
      <td colspan="2" align="right">
         <input type="submit" name="manage_addTabs:method"  value=" Add
" />
      </td>
   </tr>
</form>

######################################################
as you might see, in manage_addTabsForm.dtml the form action is
(the method) manage_addTabs
calling manage_addTabs without keyword parameter REQUEST (ie REQEST is
None)
implies programatic call (not through the web)
and manage_addTabs just returns,
anything else leads to a RESPONSE (DTML/HTML whatever sent to the client
browser)
--------------------------------------------------------------
hans augustin  (software developer)           hans@beehive.de
beehive elektronische medien GmbH       http://www.beehive.de
phone: +49 30 847-82 0                  fax: +49 30 847-82 299