crashreports/templates/crashreports/json/crashreport_by_day.html

{{ '{' }}
 "label": "crash reports per day",
 "data" : [
{% for entry in entries  %}
  [{{ entry.date_created }}, {{entry.created_count}} ]
        {% if not forloop.last %}
            ,
        {% endif %}
{% endfor %}
]
{{ '}' }}