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  1. Mongoid
  2. MONGOID-2427

One sided many to many aren't updated when a referenced item is destroyed

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    • Type: Icon: Task Task
    • Resolution: Done
    • 3.0.7
    • Affects Version/s: None
    • Component/s: None
    • None

      Hi.

      Here is the problem. Am I missing something ? Why is the array tag_ids not updated ?

      Unable to find source-code formatter for language: ruby```. Available languages are: actionscript, ada, applescript, bash, c, c#, c++, cpp, css, erlang, go, groovy, haskell, html, java, javascript, js, json, lua, none, nyan, objc, perl, php, python, r, rainbow, ruby, scala, sh, sql, swift, visualbasic, xml, yaml
      
#  example taken from http://mongoid.org/en/mongoid/docs/relations.html#has_and_belongs_to_many

class Band
  include Mongoid::Document
  has_and_belongs_to_many :tags, inverse_of: nil
end

class Tag
  include Mongoid::Document
  field :name, type: String
end

tag1 = tag.create!
tag2 = tag.create!

band = Band.create!(tags: [tag1, tag2])
puts band.tags.count == band.tag_ids.count # returns true

tag1.destroy
band.reload
puts band.tags.count == band.tag_ids.count # returns false

            Assignee:
            durran Durran Jordan
            Reporter:
            abrisse abrisse
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              Created:
              Updated:
              Resolved: