Method: Nokogiri::XML::Node#namespaces

Defined in:

lib/nokogiri/xml/node.rb

#namespaces ⇒ Object

:call-seq:

namespaces() → Hash<String(Namespace#prefix) ⇒ String(Namespace#href)>

Fetch all the namespaces on this node and its ancestors.

Note that the keys in this hash XML attributes that would be used to define this namespace, such as “xmlns:prefix”, not just the prefix.

The default namespace for this node will be included with key “xmlns”.

See also #namespace_scopes

Returns

Hash containing all the namespaces on this node and its ancestors. The hash keys are the namespace prefix, and the hash value for each key is the namespace URI.

Example:

doc = Nokogiri::XML(<<~EOF)
  <root xmlns="http://example.com/root" xmlns:in_scope="http://example.com/in_scope">
    <first/>
    <second xmlns="http://example.com/child"/>
    <third xmlns:foo="http://example.com/foo"/>
  </root>
EOF
doc.at_xpath("//root:first", "root" => "http://example.com/root").namespaces
# => {"xmlns"=>"http://example.com/root",
#     "xmlns:in_scope"=>"http://example.com/in_scope"}
doc.at_xpath("//child:second", "child" => "http://example.com/child").namespaces
# => {"xmlns"=>"http://example.com/child",
#     "xmlns:in_scope"=>"http://example.com/in_scope"}
doc.at_xpath("//root:third", "root" => "http://example.com/root").namespaces
# => {"xmlns:foo"=>"http://example.com/foo",
#     "xmlns"=>"http://example.com/root",
#     "xmlns:in_scope"=>"http://example.com/in_scope"}

# File 'lib/nokogiri/xml/node.rb', line 1200

def namespaces
  namespace_scopes.each_with_object({}) do |ns, hash|
    prefix = ns.prefix
    key = prefix ? "xmlns:#{prefix}" : "xmlns"
    hash[key] = ns.href
  end
end