Module: IdentityCache::BelongsToCaching::ClassMethods

Defined in:
lib/identity_cache/belongs_to_caching.rb

Instance Method Summary collapse

Instance Method Details

#build_normalized_belongs_to_cache(association, options) ⇒ Object 



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# File 'lib/identity_cache/belongs_to_caching.rb', line 30

def build_normalized_belongs_to_cache(association, options)
  self.class_eval(<<-CODE, __FILE__, __LINE__ + 1)
    def #{options[:cached_accessor_name]}
      if IdentityCache.should_use_cache? && #{options[:foreign_key]}.present? && !association(:#{association}).loaded?
        self.#{association} = #{options[:association_class]}.fetch_by_id(#{options[:foreign_key]})
      else
        #{association}
      end
    end

    def #{options[:prepopulate_method_name]}(record)
      self.#{association} = record
    end
  CODE
end

#cache_belongs_to(association, options = {}) ⇒ Object

Raises:

  • (NotImplementedError) 


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# File 'lib/identity_cache/belongs_to_caching.rb', line 11

def cache_belongs_to(association, options = {})
  raise NotImplementedError if options[:embed]

  unless association_reflection = reflect_on_association(association)
    raise AssociationError, "Association named '#{association}' was not found on #{self.class}"
  end

  options = {}
  self.cached_belongs_tos[association] = options

  options[:embed]                   = false
  options[:cached_accessor_name]    = "fetch_#{association}"
  options[:foreign_key]             = association_reflection.foreign_key
  options[:association_class]       = association_reflection.klass
  options[:prepopulate_method_name] = "prepopulate_fetched_#{association}"

  build_normalized_belongs_to_cache(association, options)
end