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21 lines
634 B
Ruby
21 lines
634 B
Ruby
# frozen_string_literal: true
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class MakeExpressionsLessGeneric < ActiveRecord::Migration[4.2]
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def up
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rename_column :expressions, :parent_id, :post_id
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rename_column :expressions, :expression_type_id, :expression_index
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remove_column :expressions, :parent_type
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add_index :expressions,
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%i[post_id expression_index user_id],
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unique: true,
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name: "unique_by_user"
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end
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def down
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rename_column :expressions, :post_id, :parent_id
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rename_column :expressions, :expression_index, :expression_type_id
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add_column :expressions, :parent_type, :string, null: true
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end
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end
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