Module: ParolkarInnovationLab::SocialNet::ClassMethods

Defined in:
lib/pfeed/pfeed.rb

Instance Method Summary collapse

Instance Method Details

#emits_pfeeds(arg_hash) ⇒ Object

=> [] , :for => [:itself , :all_in_its_class], :identified_by => :name, :if => :passes_test?



11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
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
62
 
# File 'lib/pfeed/pfeed.rb', line 11

def emits_pfeeds arg_hash # {:on => [] , :for => [:itself , :all_in_its_class], :identified_by => :name, :if => :passes_test?}
  arg_hash.assert_valid_keys(:on,:for,:if,:unless,:identified_by)
  [:on, :for].each do |argument|
    raise ArgumentError, "Expected an argument: #{argument}" if !arg_hash[argument]
  end

  include ParolkarInnovationLab::SocialNet::InstanceMethods
 
  method_name_array = [*arg_hash[:on]]
  class_inheritable_hash :pfeed_audience_hash
  
  method_name_array.each{|method_name| register_pfeed_audience(method_name,[*arg_hash[:for]].compact)  }

  class_inheritable_hash :pfeed_options
  write_inheritable_hash :pfeed_options, arg_hash.slice(:if,:unless,:identified_by)

  

  method_name_array.each { |method_name|
    method, symbol = method_name.to_s.split /(\!|\?)/
    symbol = '' if symbol.nil?
              
    method_to_define = method + '_with_pfeed' + symbol
    method_to_be_called = method + '_without_pfeed' + symbol
    eval %[
         
       module ::ParolkarInnovationLab::SocialNet::PfeedTemp::#{self.to_s} 
        def #{method_to_define}(*a, &b)
          returned_result = #{method_to_be_called}(*a , &b)
          method_name_in_past_tense = "#{ParolkarInnovationLab::SocialNet::PfeedUtils.attempt_pass_tense(method)}"
          PfeedItem.log(self,"#{method_name}",method_name_in_past_tense,returned_result,*a,&b) 
          returned_result
        end
       end    
    ] 
      
  }
  
  #TODO : Pfeed.log(self,"#{method_name}",method_name_in_past_tense,returned_result,*a,*b)  : this is to be done in a different thread in bg to boost performance & also needs exception handling such that parent call never breaks
  
  include "::ParolkarInnovationLab::SocialNet::PfeedTemp::#{self.to_s}".constantize # why this? because "define_method((method + '_with_pfeed' + symbol).to_sym) do |*a , &b|" generates syntax error in ruby < 1.8.7 
  
  method_name_array.each { |method_name|
    method, symbol = method_name.to_s.split /(\!|\?)/
    symbol = '' if symbol.nil?
    alias_method_chain (method + symbol), :pfeed
  }
   
  has_many :pfeed_items , :as => :originator , :dependent => :destroy   #when originator is deleted the pfeed_items gets destroyed too
   
    
end

#receives_pfeed ⇒ Object 



64
65
66
67
68
69
70
 
# File 'lib/pfeed/pfeed.rb', line 64

def receives_pfeed
  has_many :pfeed_deliveries , :as => :pfeed_receiver 
  has_many :pfeed_inbox, :class_name => 'PfeedItem', :foreign_key => "pfeed_item_id" , :through => :pfeed_deliveries , :source => :pfeed_item

	write_inheritable_attribute(:is_pfeed_receiver,true)
  class_inheritable_reader :is_pfeed_receiver
end

#register_pfeed_audience(method_name, audience_arr) ⇒ Object 



72
73
74
 
# File 'lib/pfeed/pfeed.rb', line 72

def register_pfeed_audience(method_name,audience_arr)
   write_inheritable_hash(:pfeed_audience_hash, { method_name.to_sym => audience_arr }) # this does a merge
end