retrieve latest tag values on dashboard

www/pocwww/pocwww/templates/cardsingle.jinja2

@@ -3,7 +3,7 @@
 {% block content %}
 
 <div class="content">
-    <h1>{{card.timestamp | date}}</h1>
+    <h1>{{card.timestamp | datetime('long')}}</h1>
 
 
     <div class="surfacecard card"></div>
@@ -19,6 +19,9 @@ var downhole_data = [
             { label: "Downhole Card",
               x: {{card.downhole_position}},
               y: {{card.downhole_load}} } ] ;
+
+var all_position =surface_data[0]['x'].concat(downhole_data[0]['x'])
+
 var xy_chart = d3_xy_chart()
     .width(960)
     .height(500)
@@ -49,13 +52,15 @@ function d3_xy_chart() {
 
             var x_scale = d3.scale.linear()
                 .range([0, innerwidth])
-                .domain([ d3.min(datasets, function(d) { return d3.min(d.x); }),
+                // .domain([ d3.min(datasets, function(d) { return d3.min(d.x) ; }),
-                          d3.max(datasets, function(d) { return d3.max(d.x); }) ]) ;
+                //           d3.max(datasets, function(d) { return d3.max(d.x); }) ]) ;
+                .domain([ d3.min(all_position) - 10,
+                          d3.max(all_position) + 10 ]) ;
 
             var y_scale = d3.scale.linear()
                 .range([innerheight, 0])
-                .domain([ d3.min(datasets, function(d) { return d3.min(d.y); }),
+                .domain([ d3.min(datasets, function(d) { return d3.min(d.y); }) - 1000,
-                          d3.max(datasets, function(d) { return d3.max(d.y); }) ]) ;
+                          d3.max(datasets, function(d) { return d3.max(d.y); }) + 1000 ]) ;
 
             var color_scale = d3.scale.category10()
                 .domain(d3.range(datasets.length)) ;

www/pocwww/pocwww/templates/dashboard.jinja2

@@ -3,6 +3,11 @@
 {% block content %}
 <div class="content well">
     <h1>Henry Pump POC</h1>
-    
+    <h2>Latest Tag Values</h2>
+    <pre>
+    {% for t in tag_values %}
+        {{t._id}} = {{t.lastTagValue}} @ {{t.lastTagStamp}}
+    {% endfor %}
+    </pre>
 </div>
 {% endblock content %}

www/pocwww/pocwww/views.py

@@ -38,10 +38,29 @@ class Pagination(object):
                 yield num
                 last = num
 
+def get_lastest_tag_values(request):
+    latest_tag_values = []
+    latesttag_agg = request.db['wellData'].aggregate([
+        {
+            '$sort': {"tagname": 1, "timestamp": 1}
+        },
+        {
+            '$group': {
+                '_id': "$tagname",
+                'lastTagStamp': {'$last': "$timestamp"},
+                'lastTagValue': {'$last': "$currentValue"}
+            }
+        }
+    ])
+    for t in latesttag_agg:
+        latest_tag_values.append(t)
+    return {'tag_values': latest_tag_values}
+
 
 @view_config(route_name='home', renderer='templates/dashboard.jinja2')
 def my_view(request):
-    return {'project': 'POC Web Interface', 'navgroup': 'dashboard'}
+    ltv = get_lastest_tag_values(request)
+    return {'project': 'POC Web Interface', 'navgroup': 'dashboard', 'tag_values': ltv['tag_values']}
 
 
 def card_page(request):
@@ -82,7 +101,7 @@ def cards(request):
             "count": {"$sum": 1}
         }},
         {"$sort": {"_id": 1}}
-    ], useCursor=False)
+    ])
     for d in dateagg:
         datelist.append({'count': d['count'], 'date': datetime.strptime(d['_id'], "%Y-%m-%d").date()})
     return {'datelist': list(datelist), 'navgroup': 'cards'}