Add a new jsonprint filter, used in metrics, query

puppetboard/app.py

@@ -18,7 +18,7 @@ from pypuppetdb import connect
 from puppetboard.forms import QueryForm
 from puppetboard.utils import (
     get_or_abort, yield_or_stop,
-    ten_reports,
+    ten_reports, jsonprint
     )
 
 
@@ -27,6 +27,8 @@ app.config.from_object('puppetboard.default_settings')
 app.config.from_envvar('PUPPETBOARD_SETTINGS', silent=True)
 app.secret_key = os.urandom(24)
 
+app.jinja_env.filters['jsonprint'] = jsonprint
+
 puppetdb = connect(
     api_version=3,
     host=app.config['PUPPETDB_HOST'],

puppetboard/templates/metric.html

@@ -11,7 +11,11 @@
     {% for key,value in metric %}
     <tr>
       <td>{{key}}</td>
+      {% if value is mapping %}
+        <td><pre>{{value|jsonprint}}</pre></td>
+      {% else %}
         <td>{{value}}</td>
+      {% endif %}
     </tr>
     {% endfor %}
   </tbody>

puppetboard/templates/query.html

@@ -53,7 +53,7 @@
   <div class="row">
     <div class="span12">
       <h2>Result</h2>
-      <pre><code>{{ result|tojson|replace(", ", ",\n") }}</code></pre>
+      <pre><code>{{result|jsonprint}}</code></pre>
     </div>
   </div>
   {% endif %}

puppetboard/utils.py

@@ -1,11 +1,16 @@
 from __future__ import absolute_import
 from __future__ import unicode_literals
 
+import json
+
 from requests.exceptions import HTTPError, ConnectionError
 from pypuppetdb.errors import EmptyResponseError
 
 from flask import abort
 
+def jsonprint(value):
+  return json.dumps(value, indent=2, separators=(',', ': ') )
+
 
 def get_or_abort(func, *args, **kwargs):
     """Execute the function with its arguments and handle the possible