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module Votable
extend ActiveSupport::Concern
included do
has_many :votes, as: :votable
def already_upvoted?(ip)
!votes.where(ip: ip, upvote: 1).empty?
end
def already_downvoted?(ip)
!votes.where(ip: ip, upvote: 0).empty?
end
def upvote!(ip)
return false if already_upvoted?(ip)
if already_downvoted?(ip)
votes.where(ip: ip, upvote: 0).first.delete
self.downvotes -= 1
save!
else
votes.create(ip: ip, upvote: 1).save
self.upvotes += 1
save!
end
end
def downvote!(ip)
return false if already_downvoted?(ip)
if already_upvoted?(ip)
votes.where(ip: ip, upvote: 1).first.delete
self.upvotes -= 1
save!
else
votes.create(ip: ip, upvote: 0).save
self.downvotes += 1
save!
end
end
def like!(url, name)
return false unless votes.where(liker_url: url).empty?
votes.create(liker_url: url, liker_name: name, upvote: 1).save
self.upvotes += 1
save!
end
end
end
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