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Contents
# frozen_string_literal: true
module ArLazyPreload
# ActiveRecord::Relation::Merger patch implementing merge functionality
# for lazy preloadable relations
module Merger
# Enhanced #merge implements merging lazy_preload_values
def merge
result = super
if other.lazy_preload_values.any?
if other.klass == relation.klass
merge_lazy_preloads
else
reflect_and_merge_lazy_preloads
end
end
result
end
private
def merge_lazy_preloads
relation.lazy_preload!(*other.lazy_preload_values)
end
def reflect_and_merge_lazy_preloads
reflection = relation.klass.reflect_on_all_associations.find do |r|
r.class_name == other.klass.name
end
return unless reflection
relation.lazy_preload!(reflection.name => other.lazy_preload_values)
end
end
end
Version data entries
16 entries across 16 versions & 1 rubygems