how can i filter a view by null value (using domain operator ) ?

Question

hi !
i wish to create a view where data is filtered on a datetime field which is null
so in domain statement, i enter :
Code:
domain="[('mydatetime','ISNULL,'')]
but i have to enter the third parameter after 'ISNULL', ! openerp does not let me pass 2 values only.
what can i do ?
i also tried
Code:
domain="[('mydatetime','=,'NULL')]
but it produced an error in sql (generate "mydatetime='NULL' whic cause a type error in sql)
so, what is the right syntaxe for null in the domain clause ?
thank for h

Andreas Brueckl · Accepted Answer

In python there is no null value, use False instead.

domain= [('mydatetime','=',False)]

Michael REMY · Answer

thank ! it works !
ps : i don't find the "solve" button, where is it ?

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