Help on override a create method

[realleoman]

Hi, I have created my Resources files but I'm missing one part (still understanding how this part works)

I have a resources that PUTs a URL into my database using the following sentence =>

curl -i -H "Accept: application/vnd.api+json" -H 'Content-Type:application/vnd.api+json' -X POST -d '{"data": {"type":"urls", "attributes":{"url":"http://www.myurl.com"}}}' http://localhost:3001/api/v1/urls

My question is:
How do I allow my controller (or resource) to parse the HTML and extract some tags from it?

I created the following method on my urls_controller just to test if it works:

def create
@url = Url.new(params[:data])
parse_url = Nokogiri::HTML(open(params[:data][:attributes][:url].to_s))
puts parse_url.class # => Nokogiri::HTML::Document
@url.save
end

but my console shows this error

ActiveModel::ForbiddenAttributesError (ActiveModel::ForbiddenAttributesError):
app/controllers/api/v1/urls_controller.rb:7:in `create'

and the URL is not printed on my console nor the url is saved on my urls table.

Any suggestion?