22 lines
		
	
	
		
			537 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
			
		
		
	
	
			22 lines
		
	
	
		
			537 B
		
	
	
	
		
			Ruby
		
	
	
	
	
	
MIGRATION_BASE_CLASS = if ActiveRecord::VERSION::MAJOR >= 5
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  ActiveRecord::Migration[5.0]
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else
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  ActiveRecord::Migration
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end
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class RailsSettingsMigration < MIGRATION_BASE_CLASS
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  def self.up
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    create_table :settings do |t|
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      t.string     :var,    :null => false
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      t.text       :value
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      t.references :target, :null => false, :polymorphic => true
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      t.timestamps :null => true
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    end
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    add_index :settings, [ :target_type, :target_id, :var ], :unique => true
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  end
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  def self.down
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    drop_table :settings
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  end
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end
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