End of Life Ruby 3.0 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

CGI::QueryExtension#include?

include?(*args)

# File tmp/rubies/ruby-3.0.5/lib/cgi/core.rb, line 738
def has_key?(*args)
  @params.has_key?(*args)
end

Returns true if a given query string parameter exists.

See also #has_key? #initialize_query #[] #key? also in 3.4 · 3.3 · 3.2 · 3.1