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Contents
# frozen_string_literal: true
module Mongoid
module Association
module Referenced
class HasAndBelongsToMany
# Eager class for has_and_belongs_to_many associations.
class Eager < Association::Referenced::Eager::Base
private
def preload
@docs.each do |d|
set_relation(d, [])
end
entries = {}
each_loaded_document do |doc|
entries[doc.send(key)] = doc
end
@docs.each do |d|
keys = d.send(group_by_key)
docs = entries.values_at(*keys).compact
set_relation(d, docs)
end
end
def keys_from_docs
keys = Set.new
@docs.each do |d|
keys += d.send(group_by_key)
end
keys.to_a
end
def set_relation(doc, element)
doc.__build__(@association.name, element, @association) unless doc.blank?
end
def group_by_key
@association.foreign_key
end
def key
@association.primary_key
end
end
end
end
end
end
Version data entries
25 entries across 25 versions & 1 rubygems