ruby undefined method string for TempFile? - ruby

Question

I have been trying to use the ticketmaster api to obtain some data. However, it throws an error when I try to run the code. I do not know why the error is popping up. I do not know if it is because of the url that I gave. Open method accept the url as string so I converted to string and this url is working in postman if I try. The exact error is
C:/RailsInstaller/Ruby2.3.0/lib/ruby/2.3.0/delegate.rb:87:in `method_missing': u
ndefined method `string' for #<Tempfile:0x28c2d50> (NoMethodError)
from test.rb:20:in `connection'
from test.rb:47:in `<main>'
and my code is ;
require 'open-uri'
require 'openssl'
require 'json'
class Test
#silence_warnings do
OpenSSL::SSL::VERIFY_PEER = OpenSSL::SSL::VERIFY_NONE #unless Rails.env.production?
#end
def initialize()
#url="https://app.ticketmaster.com/discovery/v2/events.json?apikey=XXXXXXXXXXXXXXXXXT&city=Binghamton"
end
def connection
puts "url", #url
result=open(#url)
response_status=result.status
#putstus
if(response_status[0]=="200")
#body=JSON.parse(result.string)
puts("Status is "+ response_status[0],"Server Message is "+ response_status[1])
return #body
else
connection_error
puts("Status is ", response_status[0])
end
end
def connection_error
puts "Connection error with the api"
end
def silence_warnings
with_warnings(nil) { yield }
end
def get_content
raise notImplementedMethod
end
end
a=Test.new
a.connection