bitbake: toastergui: serialise decimals correctly

The conversion of some ToasterTable Build object querysets to
JSON caused a serialisation error. This is because one of the
fields in the queryset was of type decimal.Decimal, and our
serialiser didn't know what to do with it.

Add a clause to check for decimal fields and serialise them
so that correct JSON can be generated.

(Bitbake rev: fa6229d4edf5904ccaa9dc323d0ab2318d1ef314)

Signed-off-by: Elliot Smith <elliot.smith@intel.com>
Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/toaster/toastergui/views.py

@@ -43,6 +43,7 @@ from django.utils.html import escape
 from datetime import timedelta, datetime
 from django.utils import formats
 from toastergui.templatetags.projecttags import json as jsonfilter
+from decimal import Decimal
 import json
 from os.path import dirname
 from functools import wraps
@@ -145,6 +146,8 @@ def objtojson(obj):
         return obj.total_seconds()
     elif isinstance(obj, QuerySet) or isinstance(obj, set):
         return list(obj)
+    elif isinstance(obj, Decimal):
+        return str(obj)
     elif type(obj).__name__ == "RelatedManager":
         return [x.pk for x in obj.all()]
     elif hasattr( obj, '__dict__') and isinstance(obj, Model):