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16 lines
360 B
Ruby
16 lines
360 B
Ruby
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class AddHasMessagesToGroups < ActiveRecord::Migration
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def up
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add_column :groups, :has_messages, :boolean, default: false, null: false
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execute <<SQL
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UPDATE groups g SET has_messages = true
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WHERE exists(SELECT group_id FROM topic_allowed_groups WHERE group_id = g.id)
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SQL
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end
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def down
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remove_column :groups, :has_messages
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end
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end
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