Method: REXML::Attributes#get_attribute

Defined in:
lib/rexml/element.rb

#get_attribute(name) ⇒ Object

:call-seq:

get_attribute(name) -> attribute_object or nil

Returns the REXML::Attribute object for the given name:

xml_string = "  <root xmlns:foo=\"http://foo\" xmlns:bar=\"http://bar\">\n     <ele foo:att='1' bar:att='2' att='&lt;'/>\n  </root>\n"
d = REXML::Document.new(xml_string)
ele = d.root.elements['//ele'] # => <a foo:att='1' bar:att='2' att='&lt;'/>
attrs = ele.attributes
attrs.get_attribute('foo:att')       # => foo:att='1'
attrs.get_attribute('foo:att').class # => REXML::Attribute
attrs.get_attribute('bar:att')       # => bar:att='2'
attrs.get_attribute('att')           # => att='&lt;'
attrs.get_attribute('nosuch')        # => nil



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# File 'lib/rexml/element.rb', line 2302

def get_attribute( name )
  attr = fetch( name, nil )
  if attr.nil?
    return nil if name.nil?
    # Look for prefix
    name =~ Namespace::NAMESPLIT
    prefix, n = $1, $2
    if prefix
      attr = fetch( n, nil )
      # check prefix
      if attr == nil
      elsif attr.kind_of? Attribute
        return attr if prefix == attr.prefix
      else
        attr = attr[ prefix ]
        return attr
      end
    end
    doctype = @element.document&.doctype
    if doctype
      expn = @element.expanded_name
      expn = doctype.name if expn.size == 0
      attr_val = doctype.attribute_of(expn, name)
      return Attribute.new( name, attr_val ) if attr_val
    end
    return nil
  end
  if attr.kind_of? Hash
    attr = attr[ @element.prefix ]
  end
  attr
end