Add initial state flag

demo/demo/settings.py

@@ -138,7 +138,7 @@
 
     "cache_arguments" : True, # True for cache, False for session-based argument propagation
 
-    #"serve_locally" : True, # True to serve assets locally, False to use their unadulterated urls (eg a CDN)
+    "serve_locally" : True, # True to serve assets locally, False to use their unadulterated urls (eg a CDN)
 
     "stateless_loader" : "demo.scaffold.stateless_app_loader",
     }

django_plotly_dash/dash_wrapper.py

@@ -223,7 +223,7 @@ def get_asset_static_url(self, asset_path):
         module_name = self.caller_module.__name__
         return static_asset_path(module_name, asset_path)
 
-    def as_dash_instance(self, cache_id=None):
+    def as_dash_instance(self, cache_id=None, can_ignore_initial_state=False):
         '''
         Form a dash instance, for stateless use of this app
         '''

django_plotly_dash/models.py

@@ -188,10 +188,13 @@ def current_state(self):
             setattr(self, '_current_state_hydrated_changed', False)
         return c_state
 
-    def as_dash_instance(self, cache_id=None):
+    def as_dash_instance(self, cache_id=None, can_ignore_initial_state=False):
         'Return a dash application instance for this model instance'
         dash_app = self.stateless_app.as_dash_app() # pylint: disable=no-member
-        base = self.current_state()
+        if can_ignore_initial_state:
+            base = None
+        else:
+            base = self.current_state()
         return dash_app.do_form_dash_instance(replacements=base,
                                               specific_identifier=self.slug,
                                               cache_id=cache_id)
@@ -220,15 +223,15 @@ def populate_values(self):
         self.base_state = json.dumps(obj)
 
     @staticmethod
-    def locate_item(ident, stateless=False, cache_id=None):
+    def locate_item(ident, stateless=False, cache_id=None, can_ignore_initial_state=False):
         '''Locate a dash application, given either the
         slug of an instance or the name for a stateless app'''
         if stateless:
             dash_app = find_stateless_by_name(ident)
         else:
             dash_app = get_object_or_404(DashApp, slug=ident)
 
-        app = dash_app.as_dash_instance(cache_id=cache_id)
+        app = dash_app.as_dash_instance(cache_id=cache_id, can_ignore_initial_state=can_ignore_initial_state)
         return dash_app, app
 
 class DashAppAdmin(admin.ModelAdmin):

django_plotly_dash/tests.py

@@ -292,7 +292,8 @@ def test_local_serving(settings):
     'Test local serve settings'
 
     from django_plotly_dash.util import serve_locally, static_asset_root, full_asset_path
-    assert serve_locally() == settings.DEBUG
+    # Now default to serving all files locally
+    assert serve_locally() == True
     assert static_asset_root() == 'dpd/assets'
     assert full_asset_path('fred.jim', 'harry') == 'dpd/assets/fred/jim/harry'
 

django_plotly_dash/views.py

@@ -78,7 +78,7 @@ def update(request, ident, stateless=False, **kwargs):
 
 def _update(request, ident, stateless=False, **kwargs):
     'Generate update json response'
-    dash_app, app = DashApp.locate_item(ident, stateless)
+    dash_app, app = DashApp.locate_item(ident, stateless, can_ignore_initial_state=True)
 
     try:
         request_body = json.loads(request.body.decode('utf-8'))
@@ -191,4 +191,3 @@ def add_stateless_apps(request, **kwargs):
     """Check all registered stateless apps and create ORM entries that are missing"""
     check_stateless_loaded()
     return redirect('admin:django_plotly_dash_statelessapp_changelist')
-