How to temporarily disable a table's FK constraints?

Hi, everyone.

Is there a standard way to disable a table foreign-key constraint temporarily?

I thought that this would be a fairly common thing to want to do, but
I only found this snippet online:

-- to disable
UPDATE pg_class SET reltriggers=0 WHERE relname = 'your_table';

-- to re-enable
UPDATE pg_class SET reltriggers = count( * )
  FROM pg_trigger WHERE pg_class.oid=tgrelid AND relname = 'your_table';

and it appears that one needs to be root to execute these statements.

Is there any other way for non-root users?

TIA!

kj