Module: ActsAsLikeable::Likeable

Defined in:
lib/acts_as_likeable/likeable.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



4
5
6
7
8
9
10
11
12
13
 
# File 'lib/acts_as_likeable/likeable.rb', line 4

def self.included base
  base.class_eval do
    belongs_to :likeable, :polymorphic => true
    has_many   :likes, :as => :likeable, :dependent => :delete_all do
      def likers
        includes(:liker).map(&:liker)
      end
    end
  end
end

Instance Method Details

#default_conditions ⇒ Object 



15
16
17
18
19
20
 
# File 'lib/acts_as_likeable/likeable.rb', line 15

def default_conditions
  {
      :likeable_id => self.id,
      :likeable_type => self.class.base_class.name.to_s
  }
end

#find_likes(extra_conditions = {}) ⇒ Object 



81
82
83
 
# File 'lib/acts_as_likeable/likeable.rb', line 81

def find_likes extra_conditions = {}
  self.likes.where(extra_conditions)
end

#like(args = {}) ⇒ Object 



37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
 
# File 'lib/acts_as_likeable/likeable.rb', line 37

def like args = {}
  return nil if args[:liker].nil?

  # find the like
   = find_likes({
       :liker_id => args[:liker].id,
       :liker_type => args[:liker].class.name
  })

  if .count == 0
     = Like.new(
        :likeable => self,
        :liker => args[:liker]
    )
  else
     = .first
  end

  if .save
    update_likes_counter
    
  else
    nil
  end
end

#liked_by(liker) ⇒ Object 



22
23
24
 
# File 'lib/acts_as_likeable/likeable.rb', line 22

def liked_by liker
  like :liker => liker
end

#liked_by?(liker) ⇒ Boolean

Returns:

  • (Boolean) 


30
31
32
33
34
 
# File 'lib/acts_as_likeable/likeable.rb', line 30

def liked_by? liker
  return false if liker.nil?
   = find_likes :liker_id => liker.id, :liker_type => liker.class.name
  .count > 0
end

#unlike(args = {}) ⇒ Object 



63
64
65
66
67
68
69
70
71
72
73
 
# File 'lib/acts_as_likeable/likeable.rb', line 63

def unlike args = {}
  return false if args[:liker].nil?
   = find_likes({
       :liker_id => args[:liker].id,
       :liker_type => args[:liker].class.name
  })
  return true if .count == 0
  .each(&:destroy)
  update_likes_counter
  true
end

#unliked_by(liker) ⇒ Object 



26
27
28
 
# File 'lib/acts_as_likeable/likeable.rb', line 26

def unliked_by liker
  self.unlike :liker => liker
end

#update_likes_counter ⇒ Object 



75
76
77
78
79
 
# File 'lib/acts_as_likeable/likeable.rb', line 75

def update_likes_counter
  if self.respond_to?(:cached_likes_total=)
    self.class.where(:id => self.id).update_all(:cached_likes_total => self.likes.count)
  end
end