method
preloader_for
v4.2.9 -
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Class: Preloader
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preloader_for(reflection, owners, rhs_klass)
private
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# File activerecord/lib/active_record/associations/preloader.rb, line 184 def preloader_for(reflection, owners, rhs_klass) return NullPreloader unless rhs_klass if owners.first.association(reflection.name).loaded? return AlreadyLoaded end reflection.check_preloadable! case reflection.macro when :has_many reflection.options[:through] ? HasManyThrough : HasMany when :has_one reflection.options[:through] ? HasOneThrough : HasOne when :belongs_to BelongsTo end end