The scope query parameter is missing from the authorization request (Intuit Developer Oauth2.0)

Question

I'm trying to integrate my Ruby on Rails app to Quickbooks Online but having trouble during oauth2.0 process. I'm geting the error;"The scope query parameter is missing from the authorization request." from this url; https://appcenter.intuit.com/app/connect/oauth2/error?error_code=MISSING_REQUIRED_PARAMETER_SCOPE. But I know my scope value is not missing and correct, it didn't give any error before using the same code that I used in my testing app. The code block I use for authentication is located below; This code works under a helper called: sessions_helper.rb

def get_quickbooks_login_url
  client_id = "MY_ID_KEY"
  client_secret = "MY_SECRET"
  oauth_params = {
     site: "https://appcenter.intuit.com/connect/oauth2",
     authorize_url: "https://appcenter.intuit.com/connect/oauth2",
     token_url: "https://oauth.platform.intuit.com/oauth2/v1/tokens/bearer"
  }
  oauth2_client = OAuth2::Client.new(client_id, client_secret, oauth_params)
  redirect_uri = 'http://localhost:3000/auth_tokens/new?service=quickbooks'
  grant_url = oauth2_client.auth_code.authorize_url(redirect_uri: redirect_uri, response_type: "code", state: SecureRandom.hex(12), scope: "com.intuit.quickbooks.accounting")
end

Thank your for your time.

Answer 1

I solved the problem. I was using the "Connect to Quickbooks" button from minimulcasts tutorial. In my test application it didn't cause any trouble but in my real app it crashed the oAuth process. I think it's because of the javascript files in the button. The button was this;

<div>
  <ipp:connectToIntuit></ipp:connectToIntuit>
  <script type="text/javascript" src="https://appcenter.intuit.com/Content/IA/intuit.ipp.anywhere.js"></script>
  <script>
      intuit.ipp.anywhere.setup({menuProxy: '/path/to/blue-dot', grantUrl: '<%= get_quickbooks_login_url %>'});
  </script>
</div>

I changed this button simply with this;

<a href="<%= get_quickbooks_login_url %>" role="button" id="connect-button" class="btn btn-info">Connect to Quickbooks</a>

And my problem is solved. But now I'm getting wrong number of arguments (given 3, expected 2) error which I think caused by SimpleCommand. Wish me luck.