13 lines
458 B
Ruby
13 lines
458 B
Ruby
class PurgeOrphanConversations < ActiveRecord::Migration
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def up
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Conversation.where(id: Conversation.joins("LEFT JOIN conversation_visibilities ON conversation_visibilities.conversation_id = conversations.id")
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.group('conversations.id')
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.having("COUNT(conversation_visibilities.id) = 0")
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.pluck('conversations.id')
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).delete_all
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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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