Hi all,
I've just discovered that lazy virtual field (aka Field.Lazy) are not shown
in a SQLFORM.grid neither implicitly (when all fields of a table are shown)
nor explicitly (by selecting the lazy virtual field using fields).
In the latter case, the SQLFORM.grid raises an error.
The test example is:
def compute_total(row):
print 'compute_total'
return 0
def compute_total_lazy(row):
print 'compute_total_lazy'
return 1
def test():
db.define_table('test_virtual_fields',
Field('title','string', requires=[IS_NOT_EMPTY()]),
Field.Virtual('total', lambda row: compute_total(row)),
Field.Lazy('total_lazy', lambda row: compute_total_lazy(row)),
)
grid = SQLFORM.grid(db.test_virtual_fields)
return response.render('default/index.html', dict(grid=grid))
while by selecting explicitly the fields with
grid = SQLFORM.grid(db.test_virtual_fields,
fields=[db.test_virtual_fields.title, db.test_virtual_fields.total,
db.test_virtual_fields.total_lazy])
The following error is raised:
Traceback (most recent call last):
File "/home/pvalleri/src/web2py/gluon/restricted.py", line 220, in restricted
exec ccode in environment
File
"/home/pvalleri/src/web2py/applications/consolrocce/controllers/default.py"
<http://127.0.0.1:8000/admin/edit/consolrocce/controllers/default.py>, line
266, in <module>
File "/home/pvalleri/src/web2py/gluon/globals.py", line 389, in <lambda>
self._caller = lambda f: f()
File
"/home/pvalleri/src/web2py/applications/consolrocce/controllers/default.py"
<http://127.0.0.1:8000/admin/edit/consolrocce/controllers/default.py>, line
221, in test
grid = SQLFORM.grid(db.test_virtual_fields,
fields=[db.test_virtual_fields.title, db.test_virtual_fields.total,
db.test_virtual_fields.total_lazy])
File "/home/pvalleri/src/web2py/gluon/sqlhtml.py", line 2024, in grid
columns = [f for f in fields if f.tablename in tablenames]
AttributeError: 'FieldMethod' object has no attribute 'tablename'
Paolo
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