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FIX: Check if bookmarkable column exists before adding (#16497)

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Because in 8040b95e8c we removed
a previous post migrate file, some people may not have had those
original polymorphic bookmark columns removed, and the migration
from this PR running will cause duplicate column errors.

cf. https://meta.discourse.org/t/duplicatecolumn-and-multisite-migrate-failed/224480
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Martin Brennan 2022-04-19 12:01:18 +10:00 committed by GitHub
parent c6c633e041
commit c841e34b62
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1 changed files with 10 additions and 3 deletions
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13
db/migrate/20220322024216_add_bookmark_polymorphic_columns.rb
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@ -2,9 +2,16 @@
class AddBookmarkPolymorphicColumns < ActiveRecord::Migration[6.1]
def change
add_column :bookmarks, :bookmarkable_id, :integer
add_column :bookmarks, :bookmarkable_type, :string
if !column_exists?(:bookmarks, :bookmarkable_id)
add_column :bookmarks, :bookmarkable_id, :integer
end
add_index :bookmarks, [:user_id, :bookmarkable_type, :bookmarkable_id], name: "idx_bookmarks_user_polymorphic_unique", unique: true
if !column_exists?(:bookmarks, :bookmarkable_type)
add_column :bookmarks, :bookmarkable_type, :string
end
if !index_exists?(:bookmarks, [:user_id, :bookmarkable_type, :bookmarkable_id])
add_index :bookmarks, [:user_id, :bookmarkable_type, :bookmarkable_id], name: "idx_bookmarks_user_polymorphic_unique", unique: true
end
end
end