Dieter Maurer wrote:

Dario Alcocer wrote at 2004-1-1 13:47 -0800:

...

I'm working with the AddressBook example from the book, "Zope Bible". The example uses the following to conditionally display an edit link for an AddressBook entry in the object's index_html (rendered via a DTMLFile() object):

<dtml-if "meta_type=='AddressBook Entry'"> | <a href="./editEntryForm">Edit Entry</a></dtml-if>

However, this never renders an "Edit Entry" link because meta_type's value is 'AddressBook' (i.e. the type of the containing object) and not the expected value 'AddressBook Entry'. I've verified this by printing out the type of self.meta_type.

This means:

either your "index_html" is "applied" to the "AddressBook" (and not an entry)

I'm not sure what you mean, but the object *should* be an Entry object. The AddressBook class supports an addEntry method; the entries are store in a dictionary kept by AddressBook: class AddressBook(SimpleItem): "An AddressBook object" meta_type = "AddressBook" def addEntry(self, FirstName = "", MiddleInitial = "", LastName = "", REQUEST = ""): "Method to add entry to an AddressBook" id = self.LastEntryID = self.LastEntryID + 1 id = str(id) entry = Entry(id, FirstName, MiddleInitial, LastName) self.Entries[id] = entry self.__changed__(1) class Entry(Item, Persistent, Implicit): "Address Book Entry" meta_type = "AddressBook Entry" def __init__(self, id, FirstName, MiddleInitial, LastName): self.id = id self.editEntry(FirstName, MiddleInitial, LastName) index_html = DTMLFile('dtml/entryDetails', globals()) Does it matter that Entry inherits from Item and not from SimpleItem? Maybe the fact that Implicit is a base class means that meta_type is acquired from AddressBook.

or an "AddressBook Entry" does not have a "meta_type" attribute.

Nope, as you can see from above, the Entry class does in fact have a meta_type member. Any other hints you might have will be greatly appreciated.