How to convert Nokogiri Document object into JSON
I have some parsed Nokogiri::XML::Document objects that I want to print as JSON.
I can go the route of making it a string, parsing it into a hash, with active-record or Crack and then Hash.to_json; but that is both ugly and depending on way too manay libraries.
Is there not a simpler way?
As per request in the comment, for example the XML <root a="b"><a>b</a></root> could be represented as JSON:
<root a="b"><a>b</a></root> #=> {"root":{"a":"b"}}
<root foo="bar"><a>b</a></root> #=> {"root":{"a":"b","foo":"bar"}}
That is what I get with Crack now too. And, sure, collisions between entities and child-tags are a potential problem, but I build most of the XML myself, so it is easiest for me to avoid these collisions alltogether :)
Answer
This one works for me:
Hash.from_xml(@nokogiri_object.to_xml).to_json
This method is using active support, so if you are not using rails then include active support core extensions manually:
require 'active_support/core_ext/hash'