26 lines
942 B
Ruby
26 lines
942 B
Ruby
class AddUserObservers < ActiveRecord::Migration
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self.transactional = false
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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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if connection.adapter_name =~ /\Apostgresql/i
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execute('CREATE INDEX CONCURRENTLY "index_enrollments_on_associated_user_id" ON enrollments(associated_user_id) WHERE associated_user_id IS NOT NULL')
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else
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add_index :enrollments, [:associated_user_id], :name => "index_enrollments_on_associated_user_id"
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end
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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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