End of Life Ruby 3.1 has reached end of life and gets no more fixes. Switch to Ruby 4.0 →

instance method

CGI::QueryExtension#[]

[](key)

# File tmp/rubies/ruby-3.1.3/lib/cgi/core.rb, line 714
def [](key)
  params = @params[key]
  return '' unless params
  value = params[0]
  if @multipart
    if value
      return value
    elsif defined? StringIO
      StringIO.new("".b)
    else
      Tempfile.new("CGI",encoding: Encoding::ASCII_8BIT)
    end
  else
    str = if value then value.dup else "" end
    str
  end
end

Get the value for the parameter with a given key.

If the parameter has multiple values, only the first will be retrieved; use params to get the array of values.

See also #has_key? #include? also in 3.4 · 3.3 · 3.2 · 3.0

next ›#has_key?