/
referential_integrity.rb
71 lines (62 loc) · 2.09 KB
/
referential_integrity.rb
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# frozen_string_literal: true
module ActiveRecord
module ConnectionAdapters
module PostgreSQL
module ReferentialIntegrity # :nodoc:
def disable_referential_integrity # :nodoc:
original_exception = nil
begin
transaction(requires_new: true) do
execute(tables.collect { |name| "ALTER TABLE #{quote_table_name(name)} DISABLE TRIGGER ALL" }.join(";"))
end
rescue ActiveRecord::ActiveRecordError => e
original_exception = e
end
begin
yield
rescue ActiveRecord::InvalidForeignKey => e
warn <<-WARNING
WARNING: Rails was not able to disable referential integrity.
This is most likely caused due to missing permissions.
Rails needs superuser privileges to disable referential integrity.
cause: #{original_exception&.message}
WARNING
raise e
end
begin
transaction(requires_new: true) do
execute(tables.collect { |name| "ALTER TABLE #{quote_table_name(name)} ENABLE TRIGGER ALL" }.join(";"))
end
rescue ActiveRecord::ActiveRecordError
end
end
def check_all_foreign_keys_valid! # :nodoc:
sql = <<~SQL
do $$
declare r record;
BEGIN
FOR r IN (
SELECT FORMAT(
'UPDATE pg_constraint SET convalidated=false WHERE conname = ''%I'' AND connamespace::regnamespace = ''%I''::regnamespace; ALTER TABLE %I.%I VALIDATE CONSTRAINT %I;',
constraint_name,
table_schema,
table_schema,
table_name,
constraint_name
) AS constraint_check
FROM information_schema.table_constraints WHERE constraint_type = 'FOREIGN KEY'
)
LOOP
EXECUTE (r.constraint_check);
END LOOP;
END;
$$;
SQL
transaction(requires_new: true) do
execute(sql)
end
end
end
end
end
end