21 lines
603 B
Ruby
21 lines
603 B
Ruby
class AddProjectsTrackersUniqueIndex < ActiveRecord::Migration[4.2]
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def self.up
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remove_duplicates
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add_index :projects_trackers, [:project_id, :tracker_id], :name => :projects_trackers_unique, :unique => true
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end
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def self.down
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remove_index :projects_trackers, :name => :projects_trackers_unique
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end
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# Removes duplicates in projects_trackers table
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def self.remove_duplicates
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Project.all.each do |project|
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ids = project.trackers.collect(&:id)
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unless ids == ids.uniq
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project.trackers.clear
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project.tracker_ids = ids.uniq
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end
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end
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end
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end
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