Changing the m2m_changed signal on Project.departments.through to
post_save on ProjectDepartmentMembership did the trick.
m2m_changed signal seems to work as long as you don't explicitly define
the "through" model.
On 06/28/2013 02:06 PM, Roberto López López wrote:
>
> I am doing tests and the m2m_changed signal seems to work perfectly as
> long as I have not defined a "through" model. Is there any trick here?
>
> Thanks!
>
>
>
>
> On 06/28/2013 12:14 PM, Roberto López López wrote:
>>
>> I have tried as well using the post_save signal and overriding the
>> save() method. But in none of those cases Project.departments is
>> populated yet when reaching my code :-/
>>
>>
>>
>> On 06/28/2013 11:50 AM, Roberto López López wrote:
>>>
>>> Hi,
>>>
>>> I am trying to listen to the m2m_changed signal on my models, but I
>>> can't make it work. Even the execution flow does not reach the
>>> linked method!
>>>
>>> class Project(models.Model):
>>> departments =
>>> models.ManyToManyField('department.Department',
>>> related_name='projects',
>>>
>>> through='project.ProjectDepartmentMembership')
>>>
>>> @receiver(m2m_changed, sender=Project.departments.through)
>>> def _on_change_m2m(sender, instance, action, reverse, model,
>>> pk_set, using, **kwargs):
>>> pass
>>>
>>> As interface I am using the django admin, and departments appears as
>>> an inline of Project
>>>
>>> Any help please? Thanks.
>>>
>>> Cheers,
>>>
>>> Roberto
>>>
>>>
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>>>
>>
>>
>> --
>> Kind regards,
>>
>> Roberto López López
>>
>>
>> System Developer
>> Parallab, Uni Computing
>> Høyteknologisenteret, Thormøhlensgate 55
>> N-5008 Bergen, Norway
>> Tel: (+47) 555 84091
>> --
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>>
>>
>
>
> --
> Kind regards,
>
> Roberto López López
>
>
> System Developer
> Parallab, Uni Computing
> Høyteknologisenteret, Thormøhlensgate 55
> N-5008 Bergen, Norway
> Tel: (+47) 555 84091
> --
> You received this message because you are subscribed to the Google
> Groups "Django users" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to [email protected].
> To post to this group, send email to [email protected].
> Visit this group at http://groups.google.com/group/django-users.
> For more options, visit https://groups.google.com/groups/opt_out.
>
>
--
Kind regards,
Roberto López López
System Developer
Parallab, Uni Computing
Høyteknologisenteret, Thormøhlensgate 55
N-5008 Bergen, Norway
Tel: (+47) 555 84091
--
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