class Mongoid::Relations::Eager::HasAndBelongsToMany
Public Instance Methods
group_by_key()
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# File lib/mongoid/relations/eager/has_and_belongs_to_many.rb, line 36 def group_by_key @metadata.foreign_key end
key()
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# File lib/mongoid/relations/eager/has_and_belongs_to_many.rb, line 40 def key @metadata.primary_key end
keys_from_docs()
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# File lib/mongoid/relations/eager/has_and_belongs_to_many.rb, line 24 def keys_from_docs keys = Set.new @docs.each do |d| keys += d.send(group_by_key) end keys.to_a end
preload()
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# File lib/mongoid/relations/eager/has_and_belongs_to_many.rb, line 7 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) set_relation(d, docs) end end
set_relation(doc, element)
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# File lib/mongoid/relations/eager/has_and_belongs_to_many.rb, line 32 def set_relation(doc, element) doc.__build__(@metadata.name, element, @metadata) end