Module: Octopus::Association

Defined in:
lib/octopus/association.rb

Instance Method Summary collapse

Instance Method Details

#association_accessor_methods(reflection, association_proxy_class) ⇒ Object 



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# File 'lib/octopus/association.rb', line 85

def association_accessor_methods(reflection, association_proxy_class)
  define_method(reflection.name) do |*params|
    reload_connection()
    force_reload = params.first unless params.empty?
    association = association_instance_get(reflection.name)

    if association.nil? || force_reload
      association = association_proxy_class.new(self, reflection)
      retval = force_reload ? reflection.klass.uncached { association.reload } : association.reload
      if retval.nil? and association_proxy_class == ActiveRecord::Associations::BelongsToAssociation
        association_instance_set(reflection.name, nil)
        return nil
      end
      association_instance_set(reflection.name, association)
    end

    association.target.nil? ? nil : association
  end

  define_method("loaded_#{reflection.name}?") do
    reload_connection() 
    association = association_instance_get(reflection.name)
    association && association.loaded?
  end

  define_method("#{reflection.name}=") do |new_value|
    reload_connection() 
    association = association_instance_get(reflection.name)

    if association.nil? || association.target != new_value
      association = association_proxy_class.new(self, reflection)
    end

    association.replace(new_value)
    association_instance_set(reflection.name, new_value.nil? ? nil : association)
  end

  define_method("set_#{reflection.name}_target") do |target|
    return if target.nil? and association_proxy_class == ActiveRecord::Associations::BelongsToAssociation
    reload_connection() 
    association = association_proxy_class.new(self, reflection)
    association.target = target
    association_instance_set(reflection.name, association)
  end
end

#association_constructor_method(constructor, reflection, association_proxy_class) ⇒ Object 



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# File 'lib/octopus/association.rb', line 59

def association_constructor_method(constructor, reflection, association_proxy_class)
  define_method("#{constructor}_#{reflection.name}") do |*params|
    reload_connection() 
    attributees      = params.first unless params.empty?
    replace_existing = params[1].nil? ? true : params[1]
    association      = association_instance_get(reflection.name)

    unless association
      association = association_proxy_class.new(self, reflection)
      association_instance_set(reflection.name, association)
    end

    if association_proxy_class == ActiveRecord::Associations::HasOneAssociation
      return_val = association.send(constructor, attributees, replace_existing)
    else
      return_val = association.send(constructor, attributees)
    end

    if should_set_current_shard?
      return_val.current_shard = self.current_shard
    end

    return_val
  end
end

#collection_reader_method(reflection, association_proxy_class) ⇒ Object 



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# File 'lib/octopus/association.rb', line 26

def collection_reader_method(reflection, association_proxy_class)
  define_method(reflection.name) do |*params|
    force_reload = params.first unless params.empty?
    reload_connection() 

    association = association_instance_get(reflection.name)

    unless association
      association  = association_proxy_class.new(self, reflection)
      association_instance_set(reflection.name, association)
    end

    reflection.klass.uncached { association.reload } if force_reload

    association
  end

  define_method("#{reflection.name.to_s.singularize}_ids") do
    reload_connection()        
    if send(reflection.name).loaded? || reflection.options[:finder_sql]
      send(reflection.name).map(&:id)
    else
      if reflection.through_reflection && reflection.source_reflection.belongs_to?
        through = reflection.through_reflection
        primary_key = reflection.source_reflection.primary_key_name
        send(through.name).select("DISTINCT #{through.quoted_table_name}.#{primary_key}").map!(&:"#{primary_key}")
      else
        send(reflection.name).select("#{reflection.quoted_table_name}.#{reflection.klass.primary_key}").except(:includes).map!(&:id)
      end
    end
  end
end

#default_octopus_opts(options) ⇒ Object 



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# File 'lib/octopus/association.rb', line 12

def default_octopus_opts(options)
  if options[:before_add].is_a?(Array)
    options[:before_add] << :set_connection
  else
    options[:before_add] = :set_connection
  end

  if options[:before_remove].is_a?(Array)
    options[:before_remove] << :set_connection
  else
    options[:before_remove] = :set_connection
  end
end

#has_and_belongs_to_many(association_id, options = {}, &extension) ⇒ Object 



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# File 'lib/octopus/association.rb', line 7

def has_and_belongs_to_many(association_id, options = {}, &extension)
  default_octopus_opts(options)
  super(association_id, options, &extension)    
end

#has_many(association_id, options = {}, &extension) ⇒ Object 



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# File 'lib/octopus/association.rb', line 2

def has_many(association_id, options = {}, &extension)
  default_octopus_opts(options)
  super(association_id, options, &extension)
end