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"""
Authorisation related functions.
This entire module will be removed some time in
the future
Many of these functions are being replaced with assertions:
User.assert_can...
"""
import datetime
from django.db import transaction
from askbot.models import Repute
from askbot.models import Answer
from askbot.models import signals
from askbot.conf import settings as askbot_settings
# user preferences view permissions
def is_user_self(request_user, target_user):
return (request_user.is_authenticated() and request_user == target_user)
def can_view_user_votes(request_user, target_user):
return (request_user.is_authenticated() and request_user == target_user)
def can_view_user_preferences(request_user, target_user):
return (request_user.is_authenticated() and request_user == target_user)
def can_view_user_edit(request_user, target_user):
return (request_user.is_authenticated() and request_user == target_user)
###########################################
## actions and reputation changes event
###########################################
def calculate_reputation(origin, offset):
result = int(origin) + int(offset)
if (result > 0):
return result
else:
return 1
@transaction.commit_on_success
def onFlaggedItem(post, user, timestamp=None):
if timestamp is None:
timestamp = datetime.datetime.now()
post.offensive_flag_count = post.offensive_flag_count + 1
post.save()
post.author.reputation = calculate_reputation(
post.author.reputation,
askbot_settings.REP_LOSS_FOR_RECEIVING_FLAG
)
post.author.save()
question = post.get_origin_post()
reputation = Repute(
user=post.author,
negative=askbot_settings.REP_LOSS_FOR_RECEIVING_FLAG,
question=question,
reputed_at=timestamp,
reputation_type=-4,#todo: clean up magic number
reputation=post.author.reputation
)
reputation.save()
signals.flag_offensive.send(
sender=post.__class__,
instance=post,
mark_by=user
)
#todo: These should be updated to work on same revisions.
if post.offensive_flag_count == askbot_settings.MIN_FLAGS_TO_HIDE_POST:
post.author.reputation = \
calculate_reputation(
post.author.reputation,
askbot_settings.REP_LOSS_FOR_RECEIVING_THREE_FLAGS_PER_REVISION
)
post.author.save()
reputation = Repute(
user=post.author,
negative=\
askbot_settings.REP_LOSS_FOR_RECEIVING_THREE_FLAGS_PER_REVISION,
question=question,
reputed_at=timestamp,
reputation_type=-6,
reputation=post.author.reputation
)
reputation.save()
elif post.offensive_flag_count == askbot_settings.MIN_FLAGS_TO_DELETE_POST:
post.author.reputation = \
calculate_reputation(
post.author.reputation,
askbot_settings.REP_LOSS_FOR_RECEIVING_FIVE_FLAGS_PER_REVISION
)
post.author.save()
reputation = Repute(
user=post.author,
negative=\
askbot_settings.REP_LOSS_FOR_RECEIVING_FIVE_FLAGS_PER_REVISION,
question=question,
reputed_at=timestamp,
reputation_type=-7,
reputation=post.author.reputation
)
reputation.save()
post.deleted = True
#post.deleted_at = timestamp
#post.deleted_by = Admin
post.save()
@transaction.commit_on_success
def onAnswerAccept(answer, user, timestamp=None):
answer.accepted = True
answer.accepted_at = timestamp
answer.question.answer_accepted = True
answer.save()
answer.question.save()
answer.author.reputation = calculate_reputation(
answer.author.reputation,
askbot_settings.REP_GAIN_FOR_RECEIVING_ANSWER_ACCEPTANCE
)
answer.author.save()
reputation = Repute(user=answer.author,
positive=askbot_settings.REP_GAIN_FOR_RECEIVING_ANSWER_ACCEPTANCE,
question=answer.question,
reputed_at=timestamp,
reputation_type=2,
reputation=answer.author.reputation)
reputation.save()
user.reputation = calculate_reputation(user.reputation,
askbot_settings.REP_GAIN_FOR_ACCEPTING_ANSWER)
user.save()
reputation = Repute(user=user,
positive=askbot_settings.REP_GAIN_FOR_ACCEPTING_ANSWER,
question=answer.question,
reputed_at=timestamp,
reputation_type=3,
reputation=user.reputation)
reputation.save()
@transaction.commit_on_success
def onAnswerAcceptCanceled(answer, user, timestamp=None):
if timestamp is None:
timestamp = datetime.datetime.now()
answer.accepted = False
answer.accepted_at = None
answer.question.answer_accepted = False
answer.save()
answer.question.save()
answer.author.reputation = calculate_reputation(
answer.author.reputation,
askbot_settings.REP_LOSS_FOR_RECEIVING_CANCELATION_OF_ANSWER_ACCEPTANCE
)
answer.author.save()
reputation = Repute(
user=answer.author,
negative=\
askbot_settings.REP_LOSS_FOR_RECEIVING_CANCELATION_OF_ANSWER_ACCEPTANCE,
question=answer.question,
reputed_at=timestamp,
reputation_type=-2,
reputation=answer.author.reputation
)
reputation.save()
user.reputation = calculate_reputation(user.reputation,
askbot_settings.REP_LOSS_FOR_CANCELING_ANSWER_ACCEPTANCE)
user.save()
reputation = Repute(user=user,
negative=askbot_settings.REP_LOSS_FOR_CANCELING_ANSWER_ACCEPTANCE,
question=answer.question,
reputed_at=timestamp,
reputation_type=-1,
reputation=user.reputation)
reputation.save()
@transaction.commit_on_success
def onUpVoted(vote, post, user, timestamp=None):
if timestamp is None:
timestamp = datetime.datetime.now()
vote.save()
post.vote_up_count = int(post.vote_up_count) + 1
post.score = int(post.score) + 1
post.save()
if not post.wiki:
author = post.author
todays_rep_gain = Repute.objects.get_reputation_by_upvoted_today(author)
if todays_rep_gain < askbot_settings.MAX_REP_GAIN_PER_USER_PER_DAY:
author.reputation = calculate_reputation(author.reputation,
askbot_settings.REP_GAIN_FOR_RECEIVING_UPVOTE)
author.save()
question = post
if isinstance(post, Answer):
question = post.question
reputation = Repute(user=author,
positive=askbot_settings.REP_GAIN_FOR_RECEIVING_UPVOTE,
question=question,
reputed_at=timestamp,
reputation_type=1,
reputation=author.reputation)
reputation.save()
@transaction.commit_on_success
def onUpVotedCanceled(vote, post, user, timestamp=None):
if timestamp is None:
timestamp = datetime.datetime.now()
vote.delete()
post.vote_up_count = int(post.vote_up_count) - 1
if post.vote_up_count < 0:
post.vote_up_count = 0
post.score = int(post.score) - 1
post.save()
if not post.wiki:
author = post.author
author.reputation = \
calculate_reputation(
author.reputation,
askbot_settings.REP_LOSS_FOR_RECEIVING_UPVOTE_CANCELATION
)
author.save()
question = post
if isinstance(post, Answer):
question = post.question
reputation = Repute(
user=author,
negative=askbot_settings.REP_LOSS_FOR_RECEIVING_UPVOTE_CANCELATION,
question=question,
reputed_at=timestamp,
reputation_type=-8,
reputation=author.reputation
)
reputation.save()
@transaction.commit_on_success
def onDownVoted(vote, post, user, timestamp=None):
if timestamp is None:
timestamp = datetime.datetime.now()
vote.save()
post.vote_down_count = int(post.vote_down_count) + 1
post.score = int(post.score) - 1
post.save()
if not post.wiki:
author = post.author
author.reputation = calculate_reputation(
author.reputation,
askbot_settings.REP_LOSS_FOR_DOWNVOTING
)
author.save()
question = post
if isinstance(post, Answer):
question = post.question
reputation = Repute(user=author,
negative=askbot_settings.REP_LOSS_FOR_DOWNVOTING,
question=question,
reputed_at=timestamp,
reputation_type=-3,
reputation=author.reputation)
reputation.save()
user.reputation = calculate_reputation(
user.reputation,
askbot_settings.REP_LOSS_FOR_RECEIVING_DOWNVOTE
)
user.save()
reputation = Repute(user=user,
negative=askbot_settings.REP_LOSS_FOR_RECEIVING_DOWNVOTE,
question=question,
reputed_at=timestamp,
reputation_type=-5,
reputation=user.reputation)
reputation.save()
@transaction.commit_on_success
def onDownVotedCanceled(vote, post, user, timestamp=None):
if timestamp is None:
timestamp = datetime.datetime.now()
vote.delete()
post.vote_down_count = int(post.vote_down_count) - 1
if post.vote_down_count < 0:
post.vote_down_count = 0
post.score = post.score + 1
post.save()
if not post.wiki:
author = post.author
author.reputation = calculate_reputation(
author.reputation,
askbot_settings.REP_GAIN_FOR_RECEIVING_DOWNVOTE_CANCELATION
)
author.save()
question = post
if isinstance(post, Answer):
question = post.question
reputation = Repute(user=author,
positive=\
askbot_settings.REP_GAIN_FOR_RECEIVING_DOWNVOTE_CANCELATION,
question=question,
reputed_at=timestamp,
reputation_type=4,
reputation=author.reputation
)
reputation.save()
user.reputation = calculate_reputation(user.reputation,
askbot_settings.REP_GAIN_FOR_CANCELING_DOWNVOTE)
user.save()
reputation = Repute(user=user,
positive=askbot_settings.REP_GAIN_FOR_CANCELING_DOWNVOTE,
question=question,
reputed_at=timestamp,
reputation_type=5,
reputation=user.reputation)
reputation.save()
|
