def get_object(self, queryset=None):
"""
Returns EDID versioned instance based on edid_pk and revision_pk.
Injects timings sets as attributes to EDID object.
We can't use RelaltedManager to get versioned timings, instead we store
timings in EDID object attributes.
"""
edid_pk = self.kwargs.get('edid_pk', None)
revision_pk = self.kwargs.get('revision_pk', None)
# Get version based on edid_pk and revision_pk or return 404.
version = Version.objects.get_for_object_reference(EDID, edid_pk) \
.filter(revision__pk=revision_pk)
try:
version = version.get()
except version.model.DoesNotExist:
raise Http404()
# Assign EDID instance to edid
edid = EDID(**version.field_dict)
# Flag EDID instance as revision
edid.is_revision = True
# Get set of all versions (related objects) in the revision
revision_versions = version.revision.version_set.all()
# Split timings by type
standardtimings = []
detailedtimings = []
for related_version in revision_versions:
if related_version.content_type.model_class() == StandardTiming:
standardtimings.append(StandardTiming(**related_version.
field_dict))
elif related_version.content_type.model_class() == DetailedTiming:
detailedtimings.append(DetailedTiming(**related_version.
field_dict))
edid.standardtimings = standardtimings
edid.detailedtimings = detailedtimings
# Return EDID instance
return edid
