Virtual field error :'FieldVirtual' object has no attribute 'listable' in 2.16.1

[icodk]

Virtual field definition generate error in 2.16.1-stable+timestamp.2017.11.14.05.54.25

Works  fine in  2.14.06

my field definition is:

db.zone.inside = Field.Virtual('inside', lambda row: 1)

I get the following error:

'FieldVirtual' object has no attribute 'listable'

The field is defined just before a call to grid = SQLFORM.smartgrid(db.zone,...

Thanks for any help

[Massimo Di Pierro]

I just fixed this in the master branch of pydal. Can you please confirm it is fixed for you?

[icodk]

Still get the same error (only replaced the objects.py file)

As before the error  shows up if I list the virtual field in the fields parameter. If fields=None then no error, but all fields are shown.

Another isue (might be related) is  if you have a compute field, and edit a record you can't save it. For example directly from the book.:

Field('full_name',compute=lambda r: r['first_name']+' '+r['last_name']),

This also worked before (2.14.06)

Thanks 

[domezzzz]

Dear Massimo

reference to this same problem:
https://github.com/web2py/web2py/issues/1815

I replaced gluon source with tester version. Give the same error
Thanks

[Massimo Di Pierro]

I am pretty sure this is fixed in the latest pydal git master. I will build a new web2py version asap.

[domezzzz]

Thank Massimo.