Non-relational field given in select_related: ' '. Choices are: (none)
In select_related
only fields that are ForeignKey
should be set. In your case the issue it that date
field is a DateTimeField
and not ForeignKey
.
So in order to solve it just do it:
new_context = Sensor.objects.select_related('measure')
You can see examples of using syntax in docs.