I have upgraded from 2.14.6 to 2.15.4 (in PythonAnywhere using Python 2.7
and MySQL) and I now get AttributeError*: *'Expression' object has no
attribute 'tablename' whenever I use COUNT or SUM in a query for SQLTABLE.
It looks as though the intermediate variable names for the SUM and COUNT
fields are not being found. SQLTABLE works fine for standard database
fields.
A workaround seems to be to use grid=rows.as_list() rather than
grid=SQLTABLE(rows,headers=hdrs) and then build the table manually in the
view rather than just using {{=grid}} but this is extra work and I use
SQLTABLE quite a lot.
Traceback *(*most recent call last*):*
File "/home/appgov/web2py/gluon/restricted.py"*, *line 219*, in *
restricted
*exec(*ccode*, *environment*)*
File "/home/appgov/web2py/applications/apg/controllers/cg.py"
<https://www.appgov.org/admin/default/edit/apg/controllers/cg.py>*, *line
836*, in <*module*>*
File "/home/appgov/web2py/gluon/globals.py"*, *line 414*, in <lambda>*
* self.*_caller *= lambda *f*: *f*()*
File "/home/appgov/web2py/applications/apg/controllers/cg.py"
<https://www.appgov.org/admin/default/edit/apg/controllers/cg.py>*, *line
657*, in *cgsusearch
grid *= *SQLTABLE*(*rows*, *headers*=*hdrs*, *truncate*=*50*)*
File "/home/appgov/web2py/gluon/sqlhtml.py"*, *line 3330*, in *__init__
tablemap *= *dict*(((*f*.*tablename*, *f*.*table*) for *f *in *fieldmap
*.*values*()))*
File "/home/appgov/web2py/gluon/sqlhtml.py"*, *line 3330*, in <*genexpr*>*
tablemap *= *dict*(((*f*.*tablename*, *f*.*table*) for *f *in *fieldmap
*.*values*()))*
AttributeError*: *'Expression' object has no attribute 'tablename'
Code:
query = db.dpspend.supplier.like(xsearch, case_sensitive=False)
isum = db.dpspend.amount.sum()
icount = db.dpspend.amount.count()
# group by family then supplier ....
rows = db(query).select(db.dpspend.dpfamily, db.dpspend.supplier, isum,
icount, orderby=db.dpspend.dpfamily,
groupby=db.dpspend.dpfamily|db.dpspend.supplier)
# Calculate the overall total values ....
for row in rows:
session.cgtotamt = session.cgtotamt + row._extra[isum]
session.cgtotrecs = session.cgtotrecs + row._extra[icount]
session.cgtotsus += 1
db.dpspend.amount.represent = lambda value, row:
DIV('{0:,}'.format(0.0 if value == None else value), _style='text-align:
right;')
hdrs = {'dpspend.dpfamily':T('Department'),
'dpspend.supplier':T('Supplier name'),
'SUM(dpspend.amount)':T('Total amount'),
'COUNT(dpspend.amount)':T('Records')}
grid = SQLTABLE(rows, headers=hdrs, truncate=50)
return dict(grid=grid)
--
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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