method

delete

v1_8_7_72 - Show latest stable - 0 notes - Class: REXML::Attributes

delete( attribute ) public

Removes an attribute

attribute:	either a String, which is the name of the attribute to remove — namespaces are significant here — or the attribute to remove.
Returns:	the owning element

 doc = Document.new "<a y:foo='0' x:foo='1' foo='3' z:foo='4'/>"
 doc.root.attributes.delete 'foo'   #-> <a y:foo='0' x:foo='1' z:foo='4'/>"
 doc.root.attributes.delete 'x:foo' #-> <a y:foo='0' z:foo='4'/>"
 attr = doc.root.attributes.get_attribute('y:foo')
 doc.root.attributes.delete attr    #-> <a z:foo='4'/>"

Show source

# File lib/rexml/element.rb, line 1161
    def delete( attribute )
      name = nil
      prefix = nil
      if attribute.kind_of? Attribute
        name = attribute.name
        prefix = attribute.prefix
      else
        attribute =~ Namespace::NAMESPLIT
        prefix, name = $1, $2
        prefix = '' unless prefix
      end
      old = fetch(name, nil)
      attr = nil
      if old.kind_of? Hash # the supplied attribute is one of many
        attr = old.delete(prefix)
        if old.size == 1
          repl = nil
          old.each_value{|v| repl = v}
          store name, repl
        end
      elsif old.nil?
        return @element
      else # the supplied attribute is a top-level one
        attr = old
        res = super(name)
      end
      @element
    end

delete

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