|compute=#lamdba r: db(db.thing.owner_id == r).count()|
Would something like this work? Am just guessing here, and not something
that I have tried out.
________________________________________
Kiran Subbaraman
http://subbaraman.wordpress.com/about/
On 1/14/2014 11:18 AM, Apple Mason wrote:
In the online doc on computed field, the computed fields uses a field
in the current table, and not in another table.
I modified the one-to-many example by adding a 'total_items' field on
person. If I want 'total_items' to be the sum of all items the person
currently has, and this field should be updated when an
inserted/deleted 'thing' for this person happens, what should computed be?
|>>> db.define_table('person',
Field('name'),
Field('total_items', 'integer', compute=#lamdba r: r.??),
# what should go here?
format='%(name)s')
>>> db.define_table('thing',
Field('name'),
Field('owner_id', 'reference person'),
format='%(name)s')|
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