On Sunday, January 29, 2017 at 7:53:45 PM UTC-5, Filipe Reis wrote:
>
> Hey guys, I am trying to start a task from a task and I found this post:
> https://groups.google.com/forum/?fromgroups#!searchin/web2py/queue$20tasks|sort:relevance/web2py/mpVWhW5QVxw/yufdedADDbYJ
>
> However I still have one issue where I get: AttributeError: type object
> 'datetime.datetime' has no attribute 'datetime'
>
> For testing purposes I'm just doing:
>
> Controller:
> scheduler.queue_task(task_add, pvars=dict(a=1,b=2), repeats=1)
>
> Scheduler:
>
> def task_child(a,b):
> return a+b
>
> def task_add(a,b):
> scheduler.queue_task(task_child, pvars=dict(a=a, b=b), repeats=1)
>
As suggested in the post you linked above, you must call db.commit() for
the task to be queued:
def task_add(a,b):
scheduler.queue_task(task_child, pvars=dict(a=a, b=b), repeats=1)
db.commit()
scheduler.queue_task simply inserts a record in the database, so you must
do a commit after it is called. Note, the commit is not necessary when
calling .queue_task() within the context of an HTTP request, because the
framework automatically does a commit at the end of every HTTP request. In
this case, though, .queue_task() is not being called during an HTTP
request, but instead during the execution of another task (which is
happening in a scheduler worker process).
Anthony
--
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