Re: [Zope] Lists and external methods
Hi, Oleg Broytmann wrote: 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. I usually use the following helper-class: class generic_datarecord: " This class provides an overall mapping of value pairs " def __init__(self,**data): self.data=data def __len__(self): return(len(self.data.keys())) def __getitem__(self,key): return(self.data[key]) def __getattr__(self,key): return self.__getitem__(key) def keys(self): return(self.data.keys()) def values(self): return(self.data.values()) if you use generic_datarecord(column1=value1,coulumn2=value2) for each row, you can alterate over a list of such datarecord_objects with dtml-in using dtml-var column1 and dtml-var column2 HTH Tino Wildenhain PS: __len__() is optional, but for easy use in all circumstances (e.g. dtml-in over a single datarecord) ___ Zope maillist - [EMAIL PROTECTED] http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Lists and external methods
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 thelistdtml-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 mappingdtml-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 [EMAIL PROTECTED]
Programmers don't die, they just GOSUB without RETURN.
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