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Type:
Bug
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: 6.3.0
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Component/s: Associations, Persistence
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Labels:None
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Minor Change
Hello,
Model definitions:
class Band include Mongoid::Document has_and_belongs_to_many :tags end class Tag include Mongoid::Document has_and_belongs_to_many :bands end
Test case:
Band.delete_all Tag.delete_all Band.new.save t = Tag.new t.bands = Band.all t.save
After save only band_ids updated with "tags", but no tag_ids added to "bands":
{"delete"=>"bands", "deletes"=>[{"q"=>{}, "limit"=>0}], "ordered"=>true}
{"delete"=>"tags", "deletes"=>[{"q"=>{}, "limit"=>0}], "ordered"=>true}
{"insert"=>"bands", "documents"=>[{"_id"=>BSON::ObjectId('5a939aea4fb9047008c73844')}], "ordered"=>true}
{"update"=>"bands", "updates"=>[{"q"=>{"$and"=>[{"_id"=>{"$in"=>[]}}]}, "u"=>{"$pull"=>{"tag_ids"=>BSON::ObjectId('5a939aea4fb9047008c73845')}}, "multi"=>true, "upsert"=>false}], "ordered"=>true}
{"find"=>"bands", "filter"=>{}, "projection"=>{"_id"=>1}, "limit"=>1}
{"find"=>"bands", "filter"=>{}}
{"insert"=>"tags", "documents"=>[{"_id"=>BSON::ObjectId('5a939aea4fb9047008c73845'), "band_ids"=>[BSON::ObjectId('5a939aea4fb9047008c73844')]}], "ordered"=>true}
But if save new "tag" before assign "bands" relationship updates properly:
Band.delete_all Tag.delete_all Band.new.save t = Tag.new t.save t.bands = Band.all
{"delete"=>"bands", "deletes"=>[{"q"=>{}, "limit"=>0}], "ordered"=>true}
{"delete"=>"tags", "deletes"=>[{"q"=>{}, "limit"=>0}], "ordered"=>true}
{"insert"=>"bands", "documents"=>[{"_id"=>BSON::ObjectId('5a939c4e4fb9047008c73846')}], "ordered"=>true}
{"insert"=>"tags", "documents"=>[{"_id"=>BSON::ObjectId('5a939c4e4fb9047008c73847')}], "ordered"=>true}
{"update"=>"bands", "updates"=>[{"q"=>{"$and"=>[{"_id"=>{"$in"=>[]}}]}, "u"=>{"$pull"=>{"tag_ids"=>BSON::ObjectId('5a939c4e4fb9047008c73847')}}, "multi"=>true, "upsert"=>false}], "ordered"=>true}
{"update"=>"tags", "updates"=>[{"q"=>{"_id"=>BSON::ObjectId('5a939c4e4fb9047008c73847')}, "u"=>{"$set"=>{"band_ids"=>[]}}, "multi"=>false, "upsert"=>false}], "ordered"=>true}
{"find"=>"bands", "filter"=>{}, "projection"=>{"_id"=>1}, "limit"=>1}
{"find"=>"bands", "filter"=>{}}
{"update"=>"tags", "updates"=>[{"q"=>{"_id"=>BSON::ObjectId('5a939c4e4fb9047008c73847')}, "u"=>{"$addToSet"=>{"band_ids"=>{"$each"=>[BSON::ObjectId('5a939c4e4fb9047008c73846')]}}}, "multi"=>false, "upsert"=>false}], "ordered"=>true}
{"update"=>"bands", "updates"=>[{"q"=>{"_id"=>BSON::ObjectId('5a939c4e4fb9047008c73846')}, "u"=>{"$addToSet"=>{"tag_ids"=>{"$each"=>[BSON::ObjectId('5a939c4e4fb9047008c73847')]}}}, "multi"=>false, "upsert"=>false}], "ordered"=>true}
If replace in first test
t.bands = Band.all
to
t.band_ids = Band.all.map{|b|b.id}
we also got correct behavior with "$addToSet"=>{"tag_ids"=>{"$each"=>[BSON::ObjectId..."
This but is absent in Mongoid 3.1.7