31 lines
		
	
	
	
		
			1.1 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
		
		
			
		
	
	
			31 lines
		
	
	
	
		
			1.1 KiB
		
	
	
	
		
			Ruby
		
	
	
	
	
	
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								class TruncatePreviewCards < ActiveRecord::Migration[5.1]
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								  def up
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								    rename_table :preview_cards, :deprecated_preview_cards
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								    create_table :preview_cards do |t|
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								      t.string     :url, default: '', null: false, index: { unique: true }
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								      t.string     :title, default: '', null: false
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								      t.string     :description, default: '', null: false
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								      t.attachment :image
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								      t.integer    :type, default: 0, null: false
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								      t.text       :html, default: '', null: false
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								      t.string     :author_name, default: '', null: false
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								      t.string     :author_url, default: '', null: false
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								      t.string     :provider_name, default: '', null: false
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								      t.string     :provider_url, default: '', null: false
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								      t.integer    :width, default: 0, null: false
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								      t.integer    :height, default: 0, null: false
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								      t.timestamps
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								    end
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								  end
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								  def down
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								    if ActiveRecord::Base.connection.table_exists? 'deprecated_preview_cards'
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								      drop_table :preview_cards
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								      rename_table :deprecated_preview_cards, :preview_cards
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								    else
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								      raise ActiveRecord::IrreversibleMigration, 'Previous preview cards table has already been removed'
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								    end
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								  end
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								end
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