check trunk as soon as the Pull Request gets merged
def test3(dbset, request_vars):
##you can retrieve the current query with
##dbset._select(), i.e. dbset is a "db(query)" object
##request_vars are the current request.vars
###so you can check for keywods etc etc etc
###checking for groupby, distinct, etc is up to you!
##given that is a callable you may cache it "externally"
## with a return dbset.count(cache=(cache.ram, 60))
## and do all your crazy things
## method that works on postgresql only for a full-table-count
result = db.executesql("SELECT reltuples::integer FROM pg_class WHERE
oid = 'public.awesome'::regclass;")
return result[0][0]
def test2():
#mode1
cache_count = 127
#mode2
cache_count = (cache.ram, 60)
#mode3
cache_count = test3
grid = SQLFORM.grid(db.awesome, cache_count=cache_count)
return dict(grid=grid)
Can I leave documentation up to someone willing to test it and report back
? :P
PS: <self_confidence mode="on">fixed 8 hours later.....web2py is
awesome</self_confidence>
PS2: on a test table with 4M rows, two 'string' fields, postgresql 9.2
takes 1.9sec to do a "standard" count(*).
Things definitely improved (although it remains a heavy operation for MVCC
databases) on the count(*) since previous versions.
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