python - Signal m2m_changed never triggered - 


class lab(model):   pass  class school(model):   labs = manytomanyfield(lab, related_name='schools')  def m2m_changed_labs(*args, **kwargs):   pass  m2m_changed.connect(m2m_changed_labs, sender=lab.schools)

the m2m_changed signal never triggered, therefore m2m_changed_labs function never called. want m2m_changed_labs function called each time school added or removed lab.

have tried sender=school.labs.through?

and receiver method this:

def m2m_changed_labs(sender, **kwargs):  # notice sender instead of *args     print "signal received"

that's sender used in example docs.


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