added support for GeoChart (based on gchart)

graphos/renderers/gchart.py

@@ -6,6 +6,11 @@ def get_html_template(self):
         return "graphos/gchart/html.html"
 
 
+class GeoChart(BaseGChart):
+    def get_js_template(self):
+        return "graphos/gchart/geo_chart.html"
+
+
 class LineChart(BaseGChart):
     def get_js_template(self):
         return "graphos/gchart/line_chart.html"

graphos/sources/model.py

@@ -5,7 +5,7 @@
 def get_field_values(row, fields):
     data = []
     for field in fields:
-        value = getattr(row, field)
+        value = row[field]
         data.append(value if not callable(value) else value())
     return data
 

graphos/templates/graphos/gchart/base_geochart.html

@@ -0,0 +1,22 @@
+
+<script type="text/javascript">
+  google.charts.load('current', {'packages':['geochart']});
+  google.charts.setOnLoadCallback(drawChart{{ chart.get_html_id }});
+  // google.setOnLoadCallback(drawChart{{ chart.get_html_id }});
+  function drawChart{{ chart.get_html_id }}() {
+    {% block chart_specific_arraytodatatable %}
+      var data = google.visualization.arrayToDataTable({{ chart.get_data_json|safe }});
+    {% endblock %}
+
+    {% if chart.get_options_json %}
+      var options = {{ chart.get_options_json|safe }}
+    {% else %}
+      var options = {};
+    {% endif %}
+
+    {% block create_chart %}
+    {% endblock %}
+    chart.draw(data, options);
+    chart{{ chart.get_html_id }} = chart;
+  }
+</script>

graphos/templates/graphos/gchart/geo_chart.html

@@ -0,0 +1,9 @@
+{% extends "graphos/gchart/base_geochart.html" %}
+
+{% block chart_specific_arraytodatatable %}
+    var data = google.visualization.arrayToDataTable({{ chart.get_data_json|safe }});
+{% endblock %}
+
+{% block create_chart %}
+  var chart = new google.visualization.GeoChart(document.getElementById('{{ chart.get_html_id }}'));
+{% endblock %}