23 lines
901 B
PL/PgSQL
23 lines
901 B
PL/PgSQL
create or replace function follow(reference regclass, _target_id uuid, _citizen_id uuid) returns void
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language plpgsql as
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$$
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begin
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if reference = 'article'::regclass then
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insert into follow_article (citizen_id, target_id)
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values (_citizen_id, _target_id)
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on conflict (citizen_id, target_id) do nothing;
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elseif reference = 'constitution'::regclass then
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insert into follow_constitution (citizen_id, target_id)
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values (_citizen_id, _target_id)
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on conflict (citizen_id, target_id) do nothing;
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elseif reference = 'citizen'::regclass then
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insert into follow_citizen (citizen_id, target_id)
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values (_citizen_id, _target_id)
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on conflict (citizen_id, target_id) do nothing;
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else
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raise exception '% no implemented', reference::text;
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end if;
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end;
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$$;
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-- drop function if exists follow(regclass, uuid, uuid); |