Class: PolymorphicPreloader

Inherits:
Object
  • Object
show all
Defined in:
lib/polymorphic_preloader.rb,
lib/polymorphic_preloader/version.rb

Constant Summary collapse

VERSION = 
'0.0.1'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(objects, association_name) ⇒ PolymorphicPreloader

Returns a new instance of PolymorphicPreloader.



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# File 'lib/polymorphic_preloader.rb', line 6

def initialize(objects, association_name)
  self.association_name = association_name
  self.grouped_objects = objects.group_by { |object| object.send("#{association_name}_type") }
end

Instance Attribute Details

#association_name ⇒ Object

Returns the value of attribute association_name.



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# File 'lib/polymorphic_preloader.rb', line 4

def association_name
  @association_name
end

#grouped_objects ⇒ Object

Returns the value of attribute grouped_objects.



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# File 'lib/polymorphic_preloader.rb', line 4

def grouped_objects
  @grouped_objects
end

Instance Method Details

#preload!(associations) ⇒ Object 



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# File 'lib/polymorphic_preloader.rb', line 11

def preload!(associations)
  grouped_objects.each_pair do |object_type, objects_with_same_association|
    target_associations = associations[object_type.to_s.underscore.to_sym]

    if target_associations.present?
      preloader.preload objects_with_same_association, association_name => target_associations
    end
  end
end