Storing JSON from API which has null values - ruby

Question

I'm trying to save null value in JSON into postgresql. When I use the following code:
resume = Resume.create!({
parsedres: {"Resume":{"xml:lang":"en","xmlns":"http://ns.hrxml.org/2006-02-28","xmlns:vos":"http://noresm.com/hr-xml/2006-02-28","ResumeId":{"IdValue":null}}}
})
I get an error:
NameError: undefined local variable or method `null' for main:Object
The issue is I get API data without "" for null and when I use JSON.parse
resume.parsedres = JSON.parse(response.body)
resume.save
It throws the
JSON::ParserError: 765: unexpected token at '<ParseResumeResponse xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Code>Ack</Code><SubCode>Authentication/SubCode><Message>AccountID.</Message><CreditsRemaining>100</CreditsRemaining></ParseResumeResponse>'
Why does JSON.parse not interpret null?

Answer 1

In the first example you provided, the parsedres is not JSON but a Ruby Hash literal. Since the literal is Ruby code, you'd need to use Ruby's nil keyword instead of null:
resume = Resume.create!({
parsedres: {"Resume":{"xml:lang":"en","xmlns":"http://ns.hrxml.org/2006-02-28","xmlns:vos":"http://noresm.com/hr-xml/2006-02-28","ResumeId":{"IdValue":nil}}}
})
If you received a JSON string from the API, you should be able to parse it using the code you listed above:
require 'json'
resume = Resume.create!({
parsedres: JSON.parse('{"Resume":{"xml:lang":"en","xmlns":"http://ns.hrxml.org/2006-02-28","xmlns:vos":"http://noresm.com/hr-xml/2006-02-28","ResumeId":{"IdValue":null}}}')
})
Based on the exception being thrown, it looks like the response.body is XML data, not JSON.