Method: OpenStreetMap::Element#method_missing

Defined in:
lib/open_street_map/element.rb

#method_missing(method, *args) ⇒ Object

All other methods are mapped so its easy to access tags: For instance obj.name is the same as obj.tags. This works for getting and setting tags.

node = OpenStreetMap::Node.new
node.add_tags( 'highway' => 'residential', 'name' => 'Main Street' )
node.highway                   #=> 'residential'
node.highway = 'unclassified'  #=> 'unclassified'
node.name                      #=> 'Main Street'

In addition methods of the form key? are used to check boolean tags. For instance oneway can be ‘true’ or ‘yes’ or ‘1’, all meaning the same.

way.oneway?

will check this. It returns true if the value of this key is either ‘true’, ‘yes’ or ‘1’.



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# File 'lib/open_street_map/element.rb', line 208

def method_missing(method, *args)
  methodname = method.to_s
  if methodname.slice(-1, 1) == '='
    if args.size != 1
      raise ArgumentError.new("wrong number of arguments (#{args.size} for 1)")
    end
    tags[methodname.chop] = args[0]
  elsif methodname.slice(-1, 1) == '?'
    if args.size != 0
      raise ArgumentError.new("wrong number of arguments (#{args.size} for 0)")
    end
    tags[methodname.chop] =~ /^(true|yes|1)$/
  else
    if args.size != 0
      raise ArgumentError.new("wrong number of arguments (#{args.size} for 0)")
    end
    tags[methodname]
  end
end