discourse/db/migrate/20220322024216_add_bookmark_polymorphic_columns.rb
Martin Brennan c841e34b62
FIX: Check if bookmarkable column exists before adding (#16497)
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
2022-04-19 12:01:18 +10:00

18 lines
590 B
Ruby

# frozen_string_literal: true
class AddBookmarkPolymorphicColumns < ActiveRecord::Migration[6.1]
def change
if !column_exists?(:bookmarks, :bookmarkable_id)
add_column :bookmarks, :bookmarkable_id, :integer
end
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