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First implementation of OOBHandler.

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This commit is contained in:
Griatch 2013-09-19 20:41:42 +02:00
parent d74cce4dfe
commit fa93c70e7f
3 changed files with 88 additions and 62 deletions
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21
src/server/caches.py
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@ -107,17 +107,9 @@ def field_pre_save(sender, instance=None, update_fields=None, raw=False, **kwarg
new_value = field.value_from_object(instance)
# try to see if there is a handler on object that should be triggered when saving.
handlername = "_at_%s_save" % fieldname
try:
# try-except is about 14 times faster than hasattr in this case
handler = _GA(instance, handlername)
except AttributeError:
handler = None
#hid = hashid(instance, "-%s" % fieldname)
try:
old_value = _GA(instance, _GA(field, "get_cache_name")())#_FIELD_CACHE.get(hid) if hid else None
except AttributeError:
old_value=None
handler = _GA(instance, handlername) if handlername in _GA(instance, '__dict__') else None
if callable(handler):
#hid = hashid(instance, "-%s" % fieldname)
try:
old_value = _GA(instance, _GA(field, "get_cache_name")())#_FIELD_CACHE.get(hid) if hid else None
except AttributeError:
@ -127,12 +119,9 @@ def field_pre_save(sender, instance=None, update_fields=None, raw=False, **kwarg
new_value = handler(new_value, old_value=old_value)
# we re-assign this to the field, save() will pick it up from there
_SA(instance, fieldname, new_value)
oob_tracker_name = "_track_%s_change" % fieldname
try:
_GA(instance, oob_tracker_name).update(new_value)
except AttributeError:
pass
trackerhandler = _GA(instance, "_trackerhandler") if "_trackerhandler" in _GA(instance, '__dict__') else None
if trackerhandler:
trackerhandler.update(fieldname, new_value)
#if hid:
# # update cache
# _FIELD_CACHE[hid] = new_value