Module: VoterLove::Voter

Extended by:
ActiveSupport::Concern
Defined in:
lib/voter_love/voter.rb

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Instance Method Details

#down_vote(votable) ⇒ Object

Down vote a “votable” object.

Raises an AlreadyVotedError if the voter already voted on the object.



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# File 'lib/voter_love/voter.rb', line 59

def down_vote(votable)
  is_votable?(votable)
  
  vote = get_vote(votable)
  
  if vote
    unless vote.up_vote
      raise Exceptions::AlreadyVotedError.new(false)
    else
      vote.up_vote = false
      votable.up_votes -= 1
      self.up_votes -= 1 if has_attribute?(:up_votes)
    end
  else
    vote = Vote.create(:votable => votable, :voter => self, :up_vote => false)     
  end
  
  votable.down_votes += 1
  self.down_votes += 1 if has_attribute?(:down_votes)
  
  Vote.transaction do
    save
    votable.save
    vote.save
  end
  
  true
end

#down_vote!(votable) ⇒ Object

Down vote a “votable” object without raising an error. Vote is ignored.



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# File 'lib/voter_love/voter.rb', line 89

def down_vote!(votable)
  begin
    down_vote(votable)
    success = true
  rescue Exceptions::AlreadyVotedError
    success = false
  end
  success
end

#down_voted?(votable) ⇒ Boolean

Returns true if the voter down voted the “votable”.

Returns:

  • (Boolean) 


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# File 'lib/voter_love/voter.rb', line 116

def down_voted?(votable)
  is_votable?(votable)
  vote = get_vote(votable)
  return false if vote.nil?
  return true if vote.has_attribute?(:up_vote) && !vote.up_vote
  false
end

#up_vote(votable) ⇒ Object

Up vote any “votable” object. Raises an AlreadyVotedError if the voter already voted on the object.



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# File 'lib/voter_love/voter.rb', line 17

def up_vote(votable)
  is_votable?(votable)
  
  vote = get_vote(votable)
  
  if vote
    if vote.up_vote
      raise Exceptions::AlreadyVotedError.new(true)
    else
      vote.up_vote = true
      votable.down_votes -= 1
      self.down_votes -= 1 if has_attribute?(:down_votes)
    end
  else
    vote = Vote.create(:votable => votable, :voter => self, :up_vote => true)
  end
  
  votable.up_votes += 1
  self.up_votes += 1 if has_attribute?(:up_votes)  
  
  Vote.transaction do
    save
    votable.save
    vote.save
  end
  
  true
end

#up_vote!(votable) ⇒ Object

Up vote any “votable” object without raising an error. Vote is ignored.



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# File 'lib/voter_love/voter.rb', line 47

def up_vote!(votable)
  begin
    up_vote(votable)
    success = true
  rescue Exceptions::AlreadyVotedError
    success = false
  end
  success
end

#up_voted?(votable) ⇒ Boolean

Returns true if the voter up voted the “votable”.

Returns:

  • (Boolean) 


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# File 'lib/voter_love/voter.rb', line 107

def up_voted?(votable)
  is_votable?(votable)
  vote = get_vote(votable)
  return false if vote.nil?
  return true if vote.has_attribute?(:up_vote) && vote.up_vote
  false
end

#voted?(votable) ⇒ Boolean

Returns true if the voter voted for the “votable”.

Returns:

  • (Boolean) 


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# File 'lib/voter_love/voter.rb', line 100

def voted?(votable)
  is_votable?(votable)
  vote = get_vote(votable)
  !vote.nil?
end