def post_save_handler(cls, sender, instance, created, raw=True, **kwargs):
"""
Post-save signal handler for creating/updating product related to archive item.
Noteworthy:
* Archive item data overwrites product data (no sync)
* get_subtype() on archive is used with item id to generate slug for product.
* Category for archive is automatically created if it doesn't exists (verbose_name_plural is used as title)
* Category title can be changed via admin - and will not be overwritten. Category slug however cannot be changed.
* Product is only active if archive item is published and sale=yes.
* Only the price for 1 item is written - hence, quantity discount can be given and will not be overwritten.
"""
if raw:
return
# Prevent that signal is invoked when we're just saving the product id on the archive item
if not getattr(instance, '_updating_product_state', False):
if instance.sale:
if instance.product:
p = instance.product
else:
p = Product()
# Update product (TODO: weight)
# Let archive item update product and save.
p = instance.update_product(p)
# Save product
p.save()
# Set product on archive item, if not already set
if not instance.product:
instance.product = p
instance._updating_product_state = True
instance.save()
del instance._updating_product_state
# Set price on product
instance.update_price(p)
# Save product attributes (e.g. Job/JSP no)
instance.update_attributes(p)
# Add categories for product
instance.update_categories(p)
elif not instance.sale and instance.product:
p = instance.product
p.active = False
p.save()
