[web2py] Unable to call the onclick on my custom button on SQLFORM.grid

[Amit]

Hi,
I have added one custom button after *Search* and *Clear* buttons of 
SQLFORM.grid but unable to associate the action onto it, onclick is not 
getting called.Please see below the code:

grid = SQLFORM.grid(db.test_table,deletable=True)
    grid[0][1][1].components = [
      TAG.button('testbutton', _id="px-delete",_type="button",_onclick=
'test')
    ]

def test():
    print 'test called'

"testbutton" is getting added perfectly but when i click on it , it doesn't 
call test() function, how to achieve it? Please do help me.

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