instance method String#truncate
String#truncate([length = 30[, suffix = '...']]) → String
Truncates a string to given length
and appends suffix
to it (indicating
that it is only an excerpt).
Examples
'A random sentence whose length exceeds 30 characters.'.truncate();
// -> 'A random sentence whose len...'
'Some random text'.truncate();
// -> 'Some random text.'
'Some random text'.truncate(10);
// -> 'Some ra...'
'Some random text'.truncate(10, ' [...]');
// -> 'Some [...]'