method

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v1_9_3_392 - Show latest stable - 0 notes - Class: REXML::Attributes

[]=( name, value ) public

Sets an attribute, overwriting any existing attribute value by the same name. Namespace is significant.

name	the name of the attribute
value	(optional) If supplied, the value of the attribute. If nil, any existing matching attribute is deleted.
Returns	Owning element

doc = Document.new "<a x:foo='1' foo='3'/>"
doc.root.attributes['y:foo'] = '2'
doc.root.attributes['foo'] = '4'
doc.root.attributes['x:foo'] = nil

Show source

# File lib/rexml/element.rb, line 1088
    def []=( name, value )
      if value.nil?             # Delete the named attribute
        attr = get_attribute(name)
        delete attr
        return
      end

      unless value.kind_of? Attribute
        if @element.document and @element.document.doctype
          value = Text::normalize( value, @element.document.doctype )
        else
          value = Text::normalize( value, nil )
        end
        value = Attribute.new(name, value)
      end
      value.element = @element
      old_attr = fetch(value.name, nil)
      if old_attr.nil?
        store(value.name, value)
      elsif old_attr.kind_of? Hash
        old_attr[value.prefix] = value
      elsif old_attr.prefix != value.prefix
        # Check for conflicting namespaces
        raise ParseException.new(
          "Namespace conflict in adding attribute \"#{value.name}\": "+
          "Prefix \"#{old_attr.prefix}\" = "+
          "\"#{@element.namespace(old_attr.prefix)}\" and prefix "+
          "\"#{value.prefix}\" = \"#{@element.namespace(value.prefix)}\"") if
          value.prefix != "xmlns" and old_attr.prefix != "xmlns" and
          @element.namespace( old_attr.prefix ) ==
            @element.namespace( value.prefix )
          store value.name, { old_attr.prefix   => old_attr,
            value.prefix                => value }
      else
        store value.name, value
      end
      return @element
    end

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