Improved enhanced callback demo functionality

Author: Mark Gibbs

demo/demo/plotly_apps.py

@@ -52,6 +52,20 @@ def callback_size(dropdown_color, dropdown_size):
     )
 def callback_c(*args,**kwargs):
     da = kwargs['dash_app']
+
+    session_state = kwargs['session_state']
+
+    calls_so_far = session_state.get('calls_so_far',0)
+    session_state['calls_so_far'] = calls_so_far + 1
+
+    user_counts = session_state.get('user_counts',None)
+    user_name = str(kwargs['user'])
+    if user_counts is None:
+        user_counts = {user_name:1}
+        session_state['user_counts'] = user_counts
+    else:
+        user_counts[user_name] = user_counts.get(user_name,0) + 1
+
     return "Args are [%s] and kwargs are %s" %(",".join(args),str(kwargs))
 
 a3 = DjangoDash("Connected")

demo/demo/templates/demo_three.html

@@ -10,14 +10,22 @@ <h1>Enhanced Callback Functionality</h1>
 <div class="card bg-light border-dark">
   <div class="card-body">
     <p><span>{</span>% load plotly_dash %}</p>
-    <p><span>{</span>% plotly_app slug="connected-2" %}</p>
+    <p><span>{</span>% plotly_app name="Ex2" ratio=0.15 %}</p>
+    <p><span>{</span>% plotly_app slug="ex2-3" ratio=0.15 %}</p>
   </div>
 </div>
 <p>
 </p>
 <div class="card border-dark">
   <div class="card-body">
-    {%plotly_app slug="connected-2"%}
+    {%plotly_app name="Ex2" ratio=0.15 %}
+  </div>
+</div>
+<p>
+</p>
+<div class="card border-dark">
+  <div class="card-body">
+    {%plotly_app slug="ex2-3" ratio=0.15 %}
   </div>
 </div>
 {%endblock%}

django_plotly_dash/migrations/0002_add_examples.py

@@ -40,6 +40,19 @@ def addExamples(apps, schema_editor):
 
     da2.save()
 
+    sa3 = StatelessApp(app_name="Ex2",
+                       slug="ex2")
+
+    sa3.save()
+
+    da3 = DashApp(stateless_app=sa3,
+                  instance_name="Ex2-1",
+                  slug="ex2-3",
+                  base_state='{"dropdown-one":{"value":"Nitrogen"}}',
+                  save_on_change=True)
+
+    da3.save()
+
 
 def remExamples(apps, schema_editor):