fix bug

@@ -13,10 +13,10 @@ from settings import conf
 iwa_url_params = {
     'scope': 'openid',
     'response_type': 'code',
-    'redirect_uri': conf.REDIRECT_URI,
+    'redirect_uri': conf.IWA_REDIRECT_URI,
     'client_id': conf.IWA_CLIENT_ID
 }
-iwa_url_params_str = '&'.join(['{0}={1}'.format(k, v) for k, v in iwa_url_params])
+iwa_url_params_str = '&'.join(['{0}={1}'.format(k, v) for k, v in iwa_url_params.items()])
 iwa_url = '{0}authorize?{1}'.format(conf.IWA_URL, iwa_url_params_str)
 client_id_base64 = base64.b64encode('{0}:{1}'.format(
     conf.IWA_CLIENT_ID, conf.IWA_CLIENT_SECRET).encode('utf-8')).decode('utf-8')

@@ -121,7 +121,7 @@ class IWABaseView:
             'code': code,
             'redirect_uri': redirect_uri,
         }
-        get_params_str = '&'.join(['{0}={1}'.format(k, v) for k, v in get_params_dict])
+        get_params_str = '&'.join(['{0}={1}'.format(k, v) for k, v in get_params_dict.items()])
         iwa_token_url = '{0}access_token?{1}'.format(iwa_url_base, get_params_str)
         res = requests.post(iwa_token_url, headers=headers)