from activities.mediator import ActivityMediator
from django_comments.models import Comment
[ドキュメント]class EntryActivityMediator(ActivityMediator):
[ドキュメント] def alter(self, instance, activity, **kwargs):
# 状態がdraftの場合は通知しない
if activity and instance.pub_state == 'draft':
return None
if activity and activity.status == 'updated':
if activity.previous:
# 通知が必要な状態の変更を詳細に記録する
previous = activity.previous.snapshot
is_created = lambda x: (
not getattr(previous, x) and
getattr(instance, x)
)
is_updated = lambda x: (
getattr(previous, x) and
getattr(instance, x) and
getattr(previous, x) != getattr(instance, x)
)
is_deleted = lambda x: (
getattr(previous, x) and
not getattr(instance, x)
)
remarks = []
if (getattr(previous, 'pub_state') == 'draft' and
getattr(instance, 'pub_state') != 'draft'):
# 前回下書きで今回は下書きじゃない
remarks.append('published')
attributes = (
'title',
'body',
'category',
)
for attribute in attributes:
if is_created(attribute):
remarks.append(attribute + '_created')
elif is_updated(attribute):
remarks.append(attribute + '_updated')
elif is_deleted(attribute):
remarks.append(attribute + '_deleted')
if not remarks:
# 通知が必要な変更ではないため通知しない
return None
activity.remarks = "\n".join(remarks)
else:
# 前回存在してなくて、いきなりupdateのとき
activity.remarks = 'published'
return activity
[ドキュメント] def prepare_context(self, activity, context, typename=None):
context = super().prepare_context(activity, context, typename)
if activity.status == 'updated':
# remarks に保存された変更状態を利便のためフラグ化
for flag in activity.remarks.split():
context[flag] = True
elif activity.status == 'comment_added':
# コメントが付いたとき、remarksにcommentのpkが入ってるはずなので
# 取得してcontextに渡す
try:
comment = Comment.objects.get(pk=int(activity.remarks))
context['comment'] = comment
except:
pass
return context