1 files changed, 39 insertions, 0 deletions
diff --git a/includes/helper/graph_helper.php b/includes/helper/graph_helper.php
new file mode 100644
index 00000000..17473634
--- /dev/null
+++ b/includes/helper/graph_helper.php
@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * Renders a bargraph
+ * @param string $key keyname of the x-axis
+ * @param array $row_names keynames for the data rows
+ * @param unknown $colors colors for the data rows
+ * @param unknown $data the data
+ */
+function bargraph($id, $key, $row_names, $colors, $data) {
+  $labels = [];
+  foreach ($data as $dataset)
+    $labels[] = $dataset[$key];
+  
+  $datasets = [];
+  foreach ($row_names as $row_key => $name) {
+    $values = [];
+    foreach ($data as $dataset)
+      $values[] = $dataset[$row_key];
+    $datasets[] = [
+        'label' => $name,
+        'fillColor' => $colors[$row_key],
+        'data' => $values 
+    ];
+  }
+  
+  return '<canvas id="' . $id . '" style="width: 100%; height: 300px;"></canvas>
+      <script type="text/javascript">
+      $(function(){
+        var ctx = $("#' . $id . '").get(0).getContext("2d");
+        var chart = new Chart(ctx).Bar(' . json_encode([
+      'labels' => $labels,
+      'datasets' => $datasets 
+  ]) . ');
+      });
+      </script>';
+}
+
+?>
+\ No newline at end of file