1 files changed, 35 insertions, 0 deletions

diff --git a/bitbake/lib/toaster/toastergui/templatetags/objects_to_dictionaries_filter.py b/bitbake/lib/toaster/toastergui/templatetags/objects_to_dictionaries_filter.py
new file mode 100644
index 0000000000..0dcc7d2714
--- /dev/null
+++ b/bitbake/lib/toaster/toastergui/templatetags/objects_to_dictionaries_filter.py
@@ -0,0 +1,35 @@
+from django import template
+import json
+
+register = template.Library()
+
+def objects_to_dictionaries(iterable, fields):
+    """
+    Convert an iterable into a list of dictionaries; fields should be set
+    to a comma-separated string of properties for each item included in the
+    resulting list; e.g. for a queryset:
+
+        {{ queryset | objects_to_dictionaries:"id,name" }}
+
+    will return a list like
+
+        [{'id': 1, 'name': 'foo'}, ...]
+
+    providing queryset has id and name fields
+
+    This is mostly to support serialising querysets or lists of model objects
+    to JSON
+    """
+    objects = []
+
+    if fields:
+        fields_list = [field.strip() for field in fields.split(',')]
+        for item in iterable:
+            out = {}
+            for field in fields_list:
+                out[field] = getattr(item, field)
+            objects.append(out)
+
+    return objects
+
+register.filter('objects_to_dictionaries', objects_to_dictionaries)