Added callback variant with kwargs added onto function signature

Author: Mark Gibbs

demo/demo/plotly_apps.py

@@ -44,7 +44,7 @@ def callback_size(dropdown_color, dropdown_size):
     html.Div(id="output-one")
     ])
 
-@a2.callback(
+@a2.expanded_callback(
     dash.dependencies.Output('output-one','children'),
     [dash.dependencies.Input('dropdown-one','value')]
     )

django_plotly_dash/dash_wrapper.py

@@ -58,9 +58,12 @@ def __init__(self, name=None, **kwargs):
         global usable_apps
         usable_apps[self._uid] = self
 
+        self._expanded_callbacks = False
+
     def form_dash_instance(self):
         rd = NotDash(name_root=self._uid,
-                     app_pathname="%s:main" % app_name)
+                     app_pathname="%s:main" % app_name,
+                     expanded_callbacks = self._expanded_callbacks)
         rd.layout = self.layout
 
         for cb, func in self._callback_sets:
@@ -82,6 +85,10 @@ def wrap_func(func,callback_set=callback_set,callback_sets=self._callback_sets):
             return func
         return wrap_func
 
+    def expanded_callback(self, output, inputs=[], state=[], events=[]):
+        self._expanded_callbacks = True
+        return self.callback(output, inputs, state, events)
+
 class NotFlask:
     def __init__(self):
         self.config = {}
@@ -124,7 +131,7 @@ def __init__(self, name_root, app_pathname, **kwargs):
         nd_apps[self._uid] = self
 
         self._adjust_id = False
-        self._dash_dispatch = False
+        self._dash_dispatch = not kwargs.get('expanded_callbacks',False)
 
     def use_dash_dispatch(self):
         # TODO make this be a function of using kwargs in callbacks

django_plotly_dash/views.py

@@ -19,7 +19,7 @@ def dependencies(request, id, **kwargs):
 def layout(request, id, **kwargs):
     app = get_app_instance_by_id(id)
     mFunc = app.locate_endpoint_function('dash-layout')
-    resp = mFunc()
+    resp = mFunc() # bytes that is json encoded layout
     return HttpResponse(resp.data,
                         content_type=resp.mimetype)
 
@@ -37,8 +37,10 @@ def update(request, id, **kwargs):
             flask.request._cached_json = (rb, flask.request._cached_json[True])
             resp = mFunc()
     else:
-        # Use direct dispatch
-        argMap = {}
+        # Use direct dispatch with extra arguments in the argMap
+        argMap = {'id':id,
+                  'request':request,
+                  'session':request.session}
         resp = app.dispatch_with_args(rb, argMap)
 
     return HttpResponse(resp.data,