Fails,
in model/db.py
db.define_table('sales',
Field('item'),
Field('item_total', 'double'),
Field('tax_percentage', 'double'),
Field('trans_date', 'datetime'),
)
class Sales():
def total(self):
return self.item_total * self.tax_percentage
def tax(self):
return self.total() - self.item_total
db.sales.virtualfields.append(Sales())
in contrrolers/default.py
def sales():
rows = db(db.sales.id>0).select()
return dict(rows=rows)
when accessing sales
Traceback (most recent call last):
File "/usr/home/jose/w2p/gluon/restricted.py", line 173, in
restricted
exec ccode in environment
File "/usr/home/jose/w2p/applications/csr/controllers/default.py",
line 132, in <module>
File "/usr/home/jose/w2p/gluon/globals.py", line 96, in <lambda>
self._caller = lambda f: f()
File "/usr/home/jose/w2p/applications/csr/controllers/default.py",
line 12, in ventas
rows = db(db.sales.id>0).select()
File "/usr/home/jose/w2p/gluon/sql.py", line 3073, in select
return self.parse(db,rows,self.colnames)
File "/usr/home/jose/w2p/gluon/sql.py", line 3181, in parse
rowsobj = rowsobj.setvirtualfields(**{table:item})
File "/usr/home/jose/w2p/gluon/sql.py", line 3332, in
setvirtualfields
box[attribute]=method()
File "/usr/home/jose/w2p/applications/csr/models/db.py", line 159,
in tax
return self.total() - self.item_total
File "/usr/home/jose/w2p/applications/csr/models/db.py", line 157,
in total
return self.item_total * self.tax_percentage
AttributeError: Sales instance has no attribute 'item_total'
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