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23 lines
593 B
Ruby
23 lines
593 B
Ruby
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# frozen_string_literal: true
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class BackfillPolymorphicBookmarks < ActiveRecord::Migration[7.0]
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def up
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DB.exec(<<~SQL)
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UPDATE bookmarks
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SET bookmarkable_id = post_id, bookmarkable_type = 'Post'
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WHERE NOT bookmarks.for_topic AND bookmarkable_id IS NULL
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SQL
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DB.exec(<<~SQL)
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UPDATE bookmarks
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SET bookmarkable_id = posts.topic_id, bookmarkable_type = 'Topic'
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FROM posts
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WHERE bookmarks.for_topic AND posts.id = bookmarks.post_id AND bookmarkable_id IS NULL
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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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