22 lines
735 B
Ruby
22 lines
735 B
Ruby
class AddUserObservers < ActiveRecord::Migration
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disable_ddl_transaction!
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tag :predeploy
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def self.up
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create_table :user_observers do |t|
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t.integer :user_id, :limit => 8, :null => false
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t.integer :observer_id, :limit => 8, :null => false
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end
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add_index :user_observers, [:user_id, :observer_id], :unique => true
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add_index :user_observers, :observer_id
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# User#move_to_user already needed this, and now we do a second query there
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add_index :enrollments, [:associated_user_id], :algorithm => :concurrently, :where => "associated_user_id IS NOT NULL"
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end
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def self.down
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drop_table :user_observers
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remove_index :enrollments, :name => "index_enrollments_on_associated_user_id"
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end
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end
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