rails no bitesize error to 3rd party API response - ruby-on-rails

Question

I have a rails app and I'm trying to get calendar freebusy events from google. When I run the following code I get undefined method "bytesize" for #<Hash.. error for the result = client.execute(.... method. I checked out some other stackoverflow answers, but I can't see what I'm doing wrong. Anyone can tell me how I should deal with this problem?
controller
include GoogleCalendarApi
......
#user = current_user
#google = #user.socials.where(provider: "google_oauth2").first
unless #google.blank?
# #client = get_busy_events(#google)
# #result = open_gcal_connection(get_busy_events, #client, #google)
#result = get_busy_events(#google)
end
.....
lib/google_calendar_api.rb
def init_google_api_calendar_client(google_account)
#method only called if google_oauth2 social exists
client = Google::APIClient.new
client.authorization.access_token = google_account.token
client.authorization.client_id = ENV['GOOGLE_API_KEY']
client.authorization.client_secret = ENV['GOOGLE_API_SECRET']
client.authorization.refresh_token = google_account.refresh_token
return client
end
def get_busy_events(social_object)
client = init_google_api_calendar_client(social_object)
old_token = client.authorization.access_token
service = client.discovered_api('calendar', 'v3')
result = client.execute(
api_method: service.freebusy.query,
body: { timeMin: '2015-12-24T17:06:02.000Z',
timeMax: '2016-01-30T17:06:02.000Z',
items: [{ id: social_object.email }]},
headers: {'Content-Type' => 'application/json'})
new_token = client.authorization.access_token
if old_token != new_token
social_object.update_attribute(token: new_token)
end
return result
end
full error:
Google::APIClient - Initializing client with options {}
21:33:15 puma.1 | Google::APIClient - Please provide :application_name and :application_version when initializing the client
21:33:15 puma.1 | Google::APIClient::Request Sending API request get https://www.googleapis.com/discovery/v1/apis/calendar/v3/rest {"User-Agent"=>"google-api-ruby-client/0.8.6 Mac OS X/10.10.4\n (gzip)", "Accept-Encoding"=>"gzip", "Content-Type"=>""}
21:33:15 puma.1 | Decompressing gzip encoded response (12528 bytes)
21:33:15 puma.1 | Decompressed (103479 bytes)
21:33:15 puma.1 | Google::APIClient::Request Result: 200 {"expires"=>"Thu, 31 Dec 2015 05:36:09 GMT", "date"=>"Thu, 31 Dec 2015 05:31:09 GMT", "etag"=>"\"ye6orv2F-1npMW3u9suM3a7C5Bo/U5WRLEvUgzkUohB7qwzTs2ir15o\"", "vary"=>"Origin, X-Origin", "content-type"=>"application/json; charset=UTF-8", "x-content-type-options"=>"nosniff", "x-frame-options"=>"SAMEORIGIN", "x-xss-protection"=>"1; mode=block", "content-length"=>"12528", "server"=>"GSE", "age"=>"126", "cache-control"=>"public, max-age=300, must-revalidate, no-transform", "alternate-protocol"=>"443:quic,p=1", "alt-svc"=>"quic=\":443\"; ma=604800; v=\"30,29,28,27,26,25\"", "connection"=>"close"}
21:33:15 puma.1 | Google::APIClient::Request Sending API request post https://www.googleapis.com/calendar/v3/freeBusy {"User-Agent"=>"google-api-ruby-client/0.8.6 Mac OS X/10.10.4\n (gzip)", "Content-Type"=>"application/json", "Accept-Encoding"=>"gzip", "Authorization"=>"Bearer ya29.WQKv43gUEb0Jt3jTBevBs0_Z9VurfGxmbH8Knv8E9Sqbw4zxeCHjydwUeyo3MSAotYj0", "Cache-Control"=>"no-store"}
21:33:15 puma.1 | Completed 500 Internal Server Error in 382ms (ActiveRecord: 0.8ms)
21:33:15 puma.1 |
21:33:15 puma.1 | NoMethodError - undefined method `bytesize' for #<Hash:0x007fb6d25b9330>:
21:33:15 puma.1 | /Users/Silo/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/net/http/generic_request.rb:182:in `send_request_with_body'
21:33:15 puma.1 | /Users/Silo/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/net/http/generic_request.rb:120:in `exec'

Answer 1

From Pardeep's link, try
result = client.execute(
api_method: service.freebusy.query,
body: URI.encode_www_form({ timeMin: '2015-12-24T17:06:02.000Z',
timeMax: '2016-01-30T17:06:02.000Z',
items: [{ id: social_object.email }]}),
headers: {'Content-Type' => 'application/json'})
The problem is that the body could not be sent as a hash. You should encode as an string.