forked from cybrespace/mastodon
35 lines
1.2 KiB
Ruby
35 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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class MigrateCustomFilters < ActiveRecord::Migration[6.1]
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def up
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# Preserve IDs as much as possible to not confuse existing clients.
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# As long as this migration is irreversible, we do not have to deal with conflicts.
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safety_assured do
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execute <<-SQL.squish
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INSERT INTO custom_filter_keywords (id, custom_filter_id, keyword, whole_word, created_at, updated_at)
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SELECT id, id, phrase, whole_word, created_at, updated_at
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FROM custom_filters
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SQL
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end
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end
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def down
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# Copy back changes from custom filters guaranteed to be from the old API
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safety_assured do
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execute <<-SQL.squish
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UPDATE custom_filters
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SET phrase = custom_filter_keywords.keyword, whole_word = custom_filter_keywords.whole_word
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FROM custom_filter_keywords
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WHERE custom_filters.id = custom_filter_keywords.id AND custom_filters.id = custom_filter_keywords.custom_filter_id
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SQL
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end
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# Drop every keyword as we can't safely provide a 1:1 mapping
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safety_assured do
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execute <<-SQL.squish
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TRUNCATE custom_filter_keywords RESTART IDENTITY
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SQL
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end
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end
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end
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