Module: ActionDispatch::Http::MimeNegotiation

Defined in:
lib/mime_fallback/mime_negotiation.rb

Instance Method Summary collapse

Instance Method Details

#negotiate_mime(order) ⇒ Object

Override to support mime type fallbacks



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# File 'lib/mime_fallback/mime_negotiation.rb', line 9

def negotiate_mime(order)
  # make search easier later
  responding_formats = order.index_by(&:to_sym)

  # formats are the request's formats
  formats.each do |priority|
    return order.first if priority == Mime::ALL

    # Try to find an exact match to what we're responding to
    types = Array(priority) + MimeFallback::Type.fallbacks(priority.to_sym)
    fallback = types.detect{|type| responding_formats.has_key?(type.to_sym)}
    return fallback if fallback

    # we've found an exact match
    return priority if responding_formats.has_key?(priority.to_sym)
  end

  order.include?(Mime::ALL) ? formats.first : nil
end