20 lines
387 B
Ruby
20 lines
387 B
Ruby
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# frozen_string_literal: true
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class DeleteOrphanPostActions < ActiveRecord::Migration[6.0]
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def up
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sql = <<~SQL
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DELETE FROM post_actions
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USING post_actions pa
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LEFT JOIN posts ON posts.id = pa.post_id
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WHERE posts.id IS NULL
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AND post_actions.id = pa.id
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SQL
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execute(sql)
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end
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def down
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raise ActiveRecord::IrreversibleMigration
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end
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end
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