Sanity check please

In the Django Admin I have a model central to a bunch of FKs and M:Ms plus a lot of processing on saving.

This is my solution which seems to work but frightens me a bit.

class Chemical(models.Model):

      # lots of fields

      def save(self, *args, **kwargs):

        self.process_stuff_based_on_field_values_pre_save()

        first = False

        if not self.id:

            first = True

            super().save(force_insert=True, *args, **kwargs)

        if self.id:

            self.create_or_update_a_bunch_of_related_records(first=first)

        super().save(force_insert=False, *args, **kwargs)

        self.create_or_update_a_bunch_of_m2m_records(first=first)

      def process_stuff_based_on_field_values_pre_save(self, first=False):          ...            def create_or_update_a_bunch_of_m2m_records(self, first=False):          ...          # lots of other methods

Thanks for any warnings, caveats

Cheers

Mike

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