discourse/db/migrate/20220308201942_create_uploa...

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# frozen_string_literal: true
class CreateUploadReferences < ActiveRecord::Migration[6.1]
def change
create_table :upload_references do |t|
t.references :upload, null: false
t.references :target, polymorphic: true, null: false
t.timestamps
end
add_index :upload_references,
%i[upload_id target_type target_id],
unique: true,
name: "index_upload_references_on_upload_and_target"
end
end