def like_explanation(request):
explanation_id = None
if request.method == 'GET':
explanation_id = request.GET['explanation_id']
likes = 0
if explanation_id:
explanation = Definition.objects.get(id = explanation_id)
author = explanation.author
likes = Like.objects.filter(definition = explanation)
if likes:
for like in likes:
if like.user.username == request.user.username:
like.delete()
explanation.likes = explanation.likes - 1
explanation.save()
author.score = author.score - Decimal('0.01')
author.num_of_likes = author.num_of_likes - 1
author.save()
else:
like.user = request.user
explanation.likes = explanation.likes + 1
like.save()
explanation.save()
author.score = author.score + Decimal('0.01')
author.num_of_likes = author.num_of_likes + 1
author.save()
else:
like = Like()
like.user = request.user
like.definition = explanation
like.save()
explanation.likes = explanation.likes + 1
explanation.save()
author.score = author.score + Decimal('0.01')
author.num_of_likes = author.num_of_likes + 1
author.save()
likes = explanation.likes
else:
pass
return HttpResponse(likes)
def add_like(request):
explanation_id = None
if request.method == 'POST':
params=json.loads(request.body)
explanation_id = params['explanation_id']
signal = params['signal']
if explanation_id:
explanation = Definition.objects.get(id = explanation_id)
if not Like.objects.has_liked(request.user, explanation):
like = Like()
like.user = request.user
like.definition = explanation
if signal == 'up':
like.upvote = True
like.downvote = False
explanation.likes = explanation.likes + 1
explanation.author.score = explanation.author.score + Decimal('0.03')
explanation.author.num_of_likes = explanation.author.num_of_likes + 1
elif signal == 'down':
like.downvote = True
like.upvote = False
explanation.likes = explanation.likes - 1
if explanation.likes < 0:
explanation.likes = 0
explanation.author.score = explanation.author.score - Decimal('0.03')
if explanation.author.score < 0:
explanation.author.score = 0
explanation.author.num_of_likes = explanation.author.num_of_likes - 1
like.save()
explanation.save()
explanation.author.save()
likes = explanation.likes
else:
like = Like.objects.get(user = request.user, definition=explanation)
if like.upvote:
if signal == 'down':
like.downvote = True
like.upvote = False
explanation.likes = explanation.likes - 2
if explanation.likes < 0:
explanation.likes = 0
explanation.author.score = explanation.author.score - Decimal('0.06')
if explanation.author.score < 0:
explanation.author.score = 0
explanation.author.num_of_likes = explanation.author.num_of_likes - 2
elif like.downvote:
if signal == 'up':
like.upvote = True
like.downvote = False
if explanation.likes == 0:
explanation.likes = explanation.likes + 1
else:
explanation.likes = explanation.likes + 2
explanation.author.score = explanation.author.score + Decimal('0.06')
explanation.author.num_of_likes = explanation.author.num_of_likes + 2
like.save()
explanation.save()
explanation.author.save()
likes = explanation.likes
else:
return HttpResponse("Invalid form.")
return HttpResponse(likes)