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- class AddProjectsTrackersUniqueIndex < ActiveRecord::Migration
- def self.up
- remove_duplicates
- add_index :projects_trackers, [:project_id, :tracker_id], :name => :projects_trackers_unique, :unique => true
- end
-
- def self.down
- remove_index :projects_trackers, :name => :projects_trackers_unique
- end
-
- # Removes duplicates in projects_trackers table
- def self.remove_duplicates
- Project.find(:all).each do |project|
- ids = project.trackers.collect(&:id)
- unless ids == ids.uniq
- project.trackers.clear
- project.tracker_ids = ids.uniq
- end
- end
- end
- end
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