From 08807eac4076c05caade82da206b5853705e6497 Mon Sep 17 00:00:00 2001
From: Yuriy Gorishniy <strausmg@gmail.com>
Date: Tue, 27 Jun 2017 20:58:42 +0300
Subject: [PATCH] move initialization of options_form to __init__

---
 etc/byor_config.py       |  4 ----
 everware/__init__.py     |  2 +-
 everware/byor_spawner.py | 11 ++++++++++-
 3 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/etc/byor_config.py b/etc/byor_config.py
index 853dd7f..d8c096b 100644
--- a/etc/byor_config.py
+++ b/etc/byor_config.py
@@ -3,7 +3,3 @@
 load_subconfig('etc/github_auth.py')
 
 c.JupyterHub.spawner_class = 'everware.ByorDockerSpawner'
-
-from os.path import join as pjoin
-with open(pjoin(c.JupyterHub.template_paths[0], '_byor_options_form.html')) as form:
-    c.ByorDockerSpawner.options_form = form.read()
diff --git a/everware/__init__.py b/everware/__init__.py
index f6145b1..2c97277 100755
--- a/everware/__init__.py
+++ b/everware/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "0.11.0"
+__version__ = "0.12.0"
 from .spawner import *
 from .byor_spawner import *
 from .authenticator import *
diff --git a/everware/byor_spawner.py b/everware/byor_spawner.py
index ce635f2..544bdce 100644
--- a/everware/byor_spawner.py
+++ b/everware/byor_spawner.py
@@ -1,3 +1,5 @@
+from os.path import join as pjoin
+
 import docker
 from docker.errors import DockerException
 from traitlets import Int
@@ -7,9 +9,16 @@
 
 
 class ByorDockerSpawner(CustomDockerSpawner):
+
+    _options_form_is_initialized = False
     def __init__(self, **kwargs):
-        self._byor_client = None
         CustomDockerSpawner.__init__(self, **kwargs)
+        self._byor_client = None
+        if not self._options_form_is_initialized:
+            with open(pjoin(self.config['JupyterHub']['template_paths'][0],
+                            '_byor_options_form.html')) as form:
+                ByorDockerSpawner.options_form = form.read()
+                ByorDockerSpawner._options_form_is_initialized = True
 
     @property
     def client(self):