mirror of https://gitlab.crans.org/bde/nk20
69 lines
2.2 KiB
Python
69 lines
2.2 KiB
Python
# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
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# SPDX-License-Identifier: GPL-3.0-or-later
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import inspect
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from django.core import serializers
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from django.db.models.signals import pre_save, pre_delete
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from django.dispatch import receiver
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from .models import Changelog
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def get_user_in_signal(sender, **kwargs):
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user = None
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for entry in reversed(inspect.stack()):
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try:
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user = entry[0].f_locals['request'].user
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break
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except:
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pass
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if not user:
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print("WARNING: Attempt to save " + str(sender) + " with no user")
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return user
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EXCLUDED = [
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'Changelog',
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'Migration',
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'Session',
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]
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@receiver(pre_save)
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def save_object(sender, instance, **kwargs):
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model_name = sender.__name__
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if model_name in EXCLUDED:
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return
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previous = sender.objects.filter(pk=instance.pk).all()
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user = get_user_in_signal(sender, **kwargs)
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if previous.exists:
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previous_json = serializers.serialize('json', previous)[1:-1]
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else:
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previous_json = None
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instance_json = serializers.serialize('json', [instance, ],)[1:-1]
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Changelog.objects.create(user=user,
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model=model_name,
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instance_pk=instance.pk,
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previous=previous_json,
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data=instance_json,
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action=("edit" if previous.exists() else "create")
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)#.save()
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@receiver(pre_delete)
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def delete_object(sender, instance, **kwargs):
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model_name = sender.__name__
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if model_name in EXCLUDED:
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return
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user = get_user_in_signal(sender, **kwargs)
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instance_json = serializers.serialize('json', [instance, ])[1:-1]
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Changelog.objects.create(user=user,
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model=model_name,
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instance_pk=instance.pk,
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previous=instance_json,
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data=None,
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action="delete"
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).save()
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