[Zope] Lists and external methods

[Oleg Broytmann]

On Tue, 4 Jul 2000, Pieter Claerhout wrote:
> I want the external method to return this in a list, where I can iterate over using the
> <dtml-in> tag, so that I can reference the different fields in each record with a name.
> 
> What should the list look like so that I can accomplish this?

   dtml-in eats a list of objects or a list of dictionaries.

Example 1.

class Item:
   pass

   Your external methods should return:

l = []

item1 = Item()
item1.date = "21/12/67"
item1.foo = "bar"
l.append(item1)

item2 = Item()
item2.date = "1/1/2000"
item2.foo = "baz"
l.append(item2)

   ...etc...

return l

   In the DTML use the list: <dtml-in thelist><dtml-var date></dtml-in thelist>


Example 2 (dictionaries).

   Your external methods should return:

l = []

item1 = {}
item1["date"] = "21/12/67"
item1["foo"] = "bar"
l.append(item1)

item2 = {}
item2["date"] = "1/1/2000"
item2["foo"] = "baz"
l.append(item2)

   ...etc...

return l

   In the DTML use the list: <dtml-in thelist mapping><dtml-var date></dtml-in thelist>
                                              ^^^^^^^
   dtml-in needs to be notified these are dicttionaries.

Oleg.            (All opinions are mine and not of my employer)
---- 
    Oleg Broytmann      Foundation for Effective Policies      phd@phd.russ.ru
           Programmers don't die, they just GOSUB without RETURN.