fix for #14

jupyterlab_iframe/extension.py

@@ -26,7 +26,7 @@ def load_jupyter_server_extension(nb_server_app):
     host_pattern = '.*$'
     base_url = web_app.settings['base_url']
 
-    print('Installing jupyterlab_iframe handler on path %s' % '/iframes')
+    print('Installing jupyterlab_iframe handler on path %s' % url_path_join(base_url, 'iframes'))
     print('Handling iframes: %s' % sites)
 
-    web_app.add_handlers(host_pattern, [(url_path_join(base_url, '/iframes'), IFrameHandler, {'welcome': welcome, 'sites': sites})])
+    web_app.add_handlers(host_pattern, [(url_path_join(base_url, 'iframes'), IFrameHandler, {'welcome': welcome, 'sites': sites})])

package.json

@@ -23,6 +23,7 @@
   "dependencies": {
     "@jupyterlab/application": "^0.16.0",
     "@jupyterlab/apputils": "^0.16.0",
+    "@jupyterlab/coreutils": "^1.0.2",
     "@jupyterlab/docmanager": "^0.16.0",
     "@phosphor/disposable": "^1.1.2"
   },

src/index.ts

@@ -6,6 +6,10 @@ import {
   ICommandPalette, showDialog, Dialog
 } from '@jupyterlab/apputils';
 
+import {
+  PageConfig
+} from '@jupyterlab/coreutils'
+
 import {
   IDocumentManager
 } from '@jupyterlab/docmanager';
@@ -129,7 +133,7 @@ function activate(app: JupyterLab, docManager: IDocumentManager, palette: IComma
 
   // grab sites from serverextension
   var xhr = new XMLHttpRequest();
-  xhr.open("GET", "/iframes", true);
+  xhr.open("GET", PageConfig.getBaseUrl() + "iframes", true);
   xhr.onload = function (e:any) {
     if (xhr.readyState === 4) {
       if (xhr.status === 200) {