Class: Orthoses::ActiveRecord::Relation

Inherits:
Object
  • Object
show all
Defined in:
lib/orthoses/active_record/relation.rb

Instance Method Summary collapse

Constructor Details

#initialize(loader) ⇒ Relation

Returns a new instance of Relation.



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# File 'lib/orthoses/active_record/relation.rb', line 6

def initialize(loader)
  @loader = loader
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/orthoses/active_record/relation.rb', line 10

def call
  @loader.call.tap do |store|
    ::ActiveRecord::Base.descendants.each do |klass|
      next if klass.abstract_class?

      primary_key = fetch_primary_key(klass)

      model_name = Utils.module_name(klass) or next
      class_specific_relation = "#{model_name}::ActiveRecord_Relation"
      class_specific_proxy = "#{model_name}::ActiveRecord_Associations_CollectionProxy"
      class_specific_generated_relation_methods = "#{model_name}::GeneratedRelationMethods"

      # Expressing delegation.
      store[class_specific_generated_relation_methods].tap do |c|
        klass.singleton_methods(false).each do |singleton_method|
          c << "def #{singleton_method}: (*untyped, **untyped) -> untyped"
        end
        (klass.singleton_class.included_modules - ::ActiveRecord::Relation.included_modules).each do |mod|
          mname = Utils.module_name(mod) or next
          store[mname].header = "module #{mname}"
          c << "include #{mname}"
        end
      end

      store[class_specific_relation].tap do |c|
        c.header = "class #{class_specific_relation} < ::ActiveRecord::Relation"
        c << "include #{class_specific_generated_relation_methods}"
        c << "include _ActiveRecord_Relation[#{model_name}, #{primary_key}]"
        c << "include Enumerable[#{model_name}]"
      end

      store[class_specific_proxy].tap do |c|
        c.header = "class #{class_specific_proxy} < ::ActiveRecord::Associations::CollectionProxy"
        c << "include _ActiveRecord_Relation[#{model_name}, #{primary_key}]"
      end

      store[model_name].tap do |c|
        c << "extend _ActiveRecord_Relation_ClassMethods[#{model_name}, #{class_specific_relation}, #{primary_key}]"
      end
    end
  end
end