class ActiveRecord::Associations::Preloader::ThroughAssociation

Experimental RBS support (using type sampling data from the type_fusion project). 

# sig/active_record/associations/preloader/through_association.rbs

class ActiveRecord::Associations::Preloader::ThroughAssociation < ActiveRecord::Associations::Preloader::Association
  def runnable_loaders: () -> untyped
  def source_preloaders: () -> untyped
  def through_preloaders: () -> untyped
end

:nodoc:

def data_available? 

def data_available?
  owners.all? { |owner| loaded?(owner) } ||
    through_preloaders.all?(&:run?) && source_preloaders.all?(&:run?)
end

def future_classes 

def future_classes
  if run?
    []
  elsif through_preloaders.all?(&:run?)
    source_preloaders.flat_map(&:future_classes).uniq
  else
    through_classes = through_preloaders.flat_map(&:future_classes)
    source_classes = source_reflection.
      chain.
      reject { |reflection| reflection.respond_to?(:polymorphic?) && reflection.polymorphic? }.
      map(&:klass)
    (through_classes + source_classes).uniq
  end
end

def middle_records 

def middle_records
  through_preloaders.flat_map(&:preloaded_records)
end

def preload_index 

def preload_index
  @preload_index ||= preloaded_records.each_with_object({}).with_index do |(record, result), index|
    result[record] = index
  end
end

def preloaded_records

:nodoc: 
def preloaded_records
  @preloaded_records ||= source_preloaders.flat_map(&:preloaded_records)
end

def records_by_owner 

def records_by_owner
  return @records_by_owner if defined?(@records_by_owner)
  @records_by_owner = owners.each_with_object({}) do |owner, result|
    if loaded?(owner)
      result[owner] = target_for(owner)
      next
    end
    through_records = through_records_by_owner[owner] || []
    if owners.first.association(through_reflection.name).loaded?
      if source_type = reflection.options[:source_type]
        through_records = through_records.select do |record|
          record[reflection.foreign_type] == source_type
        end
      end
    end
    records = through_records.flat_map do |record|
      source_records_by_owner[record]
    end
    records.compact!
    records.sort_by! { |rhs| preload_index[rhs] } if scope.order_values.any?
    records.uniq! if scope.distinct_value
    result[owner] = records
  end
end

def runnable_loaders

Experimental RBS support (using type sampling data from the type_fusion project). 

def runnable_loaders: () -> untyped

This signature was generated using 2 samples from 1 application. 

def runnable_loaders
  if data_available?
    [self]
  elsif through_preloaders.all?(&:run?)
    source_preloaders.flat_map(&:runnable_loaders)
  else
    through_preloaders.flat_map(&:runnable_loaders)
  end
end

def source_preloaders

Experimental RBS support (using type sampling data from the type_fusion project). 

def source_preloaders: () -> untyped

This signature was generated using 2 samples from 1 application. 

def source_preloaders
  @source_preloaders ||= ActiveRecord::Associations::Preloader.new(records: middle_records, associations: source_reflection.name, scope: scope, associate_by_default: false).loaders
end

def source_records_by_owner 

def source_records_by_owner
  @source_records_by_owner ||= source_preloaders.map(&:records_by_owner).reduce(:merge)
end

def source_reflection 

def source_reflection
  reflection.source_reflection
end

def through_preloaders

Experimental RBS support (using type sampling data from the type_fusion project). 

def through_preloaders: () -> untyped

This signature was generated using 3 samples from 1 application. 

def through_preloaders
  @through_preloaders ||= ActiveRecord::Associations::Preloader.new(records: owners, associations: through_reflection.name, scope: through_scope, associate_by_default: false).loaders
end

def through_records_by_owner 

def through_records_by_owner
  @through_records_by_owner ||= through_preloaders.map(&:records_by_owner).reduce(:merge)
end

def through_reflection 

def through_reflection
  reflection.through_reflection
end

def through_scope 

def through_scope
  scope = through_reflection.klass.unscoped
  options = reflection.options
  return scope if options[:disable_joins]
  values = reflection_scope.values
  if annotations = values[:annotate]
    scope.annotate!(*annotations)
  end
  if options[:source_type]
    scope.where! reflection.foreign_type => options[:source_type]
  elsif !reflection_scope.where_clause.empty?
    scope.where_clause = reflection_scope.where_clause
    if includes = values[:includes]
      scope.includes!(source_reflection.name => includes)
    else
      scope.includes!(source_reflection.name)
    end
    if values[:references] && !values[:references].empty?
      scope.references_values |= values[:references]
    else
      scope.references!(source_reflection.table_name)
    end
    if joins = values[:joins]
      scope.joins!(source_reflection.name => joins)
    end
    if left_outer_joins = values[:left_outer_joins]
      scope.left_outer_joins!(source_reflection.name => left_outer_joins)
    end
    if scope.eager_loading? && order_values = values[:order]
      scope = scope.order(order_values)
    end
  end
  cascade_strict_loading(scope)
end