slugify.sql

create or replace function slugify(str text)
    returns text
    language plpgsql
as $$
declare
_out text;
begin
    _out := translate(
        lower(str),
        'абвгдеёзийклмнопрстуфыэ',
        'abvgdeeziyklmnoprstufye'
    );
    _out := replace(_out, 'ж', 'zh');
    _out := replace(_out, 'х', 'kh');
    _out := replace(_out, 'ц', 'ts');
    _out := replace(_out, 'ч', 'ch');
    _out := replace(_out, 'ш', 'sh');
    _out := replace(_out, 'щ', 'sch');
    _out := replace(_out, 'ь', '');
    _out := replace(_out, 'ъ', '');
    _out := replace(_out, 'ю', 'yu');
    _out := replace(_out, 'я', 'ya');
    _out := regexp_replace(_out, '[^a-z0-9]+', '-', 'g');
    return trim(_out, '-');
end
$$;