[Zope-dev] pseudo database records for the "in" tag?

[Jeffrey P Shell]

> From: julian@zereau.net I need to know how to structure dynamic tabular data
> (returned from an external method) so that the "in" tag can handle it like it
> does the results of a SQL method and do automatic variable setting etc.

Just return a sequence of mapping objects (dictionaries) or instances.  One
thing to note when looping over a sequence of mapping objects with the in
tag, the parameter "mapping" must be set.  For example, with the external
method::

def emQuickTest(self):
    r=[]
    nl={'name': 'bob',
        'job' : 'slob',}
    r.append(nl)

    nl={'name': 'jill',
        'job' : 'pill',}
    r.append(nl)

    return r

With an external method object named emQuickTest, use the following DTML:

<!--#in emQuickTest mapping-->
 <P><STRONG>name:</STRONG> <!--#var name--><BR>
 <STRONG>job:</STRONG> <!--#var job--></P>
<!--#/in-->

("mapping" tells the #in tag to do a 'getitem' instead of 'getattr' to get
the names.  'getitem' works with dictionary/dictionary-like objects.
'getattr' works with instances.)

This will result in returned HTML like the following

 <P><STRONG>name:</STRONG> bob<BR>
 <STRONG>job:</STRONG> slob</P>
 <P><STRONG>name:</STRONG> jill<BR>
 <STRONG>job:</STRONG> pill</P>

.jPS | jeffrey@digicool.com
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