Module: DataMapper::CounterCacheable::ModelClassMethods

Defined in:
lib/dm-counter-cache.rb

Overview

ClassMethods

Instance Method Summary collapse

Instance Method Details

#counter_caches ⇒ Object

defined_counter_cache_callbacks_for?(attribute)



61
62
63
 
# File 'lib/dm-counter-cache.rb', line 61

def counter_caches
  @_counter_caches ||= {}
end

#define_counter_cache_callbacks_for(relationship, counter_cache_attribute) ⇒ Object 



48
49
50
51
52
53
54
55
 
# File 'lib/dm-counter-cache.rb', line 48

def define_counter_cache_callbacks_for(relationship, counter_cache_attribute)
  return if defined_counter_cache_callbacks_for?(counter_cache_attribute)

  self.after(:create)  { adjust_counter_cache_for(relationship, counter_cache_attribute, +1) }
  self.after(:destroy) { adjust_counter_cache_for(relationship, counter_cache_attribute, -1) }

  counter_caches[counter_cache_attribute] = true
end

#defined_counter_cache_callbacks_for?(attribute) ⇒ Boolean

register_counter_cache_callbacks_for(relationship, counter_cache_attribute)

Returns:

  • (Boolean) 


57
58
59
 
# File 'lib/dm-counter-cache.rb', line 57

def defined_counter_cache_callbacks_for?(attribute)
  !counter_caches[attribute].nil?
end