I want to make aggregations and use annotate with Count (group by). But I would like to transform my result as below
mygroupby = Mymodel.objects.all().values('field1').annotate(total=Count('field1'))
result = [wound_stat for wound_stat in wound_stats]
currently result
[
{'field1': 'A', 'total': 1},
{'field1': 'B', 'total': 4},
{'field1': 'C', 'total': 2},
{'field1': 'D', 'total': 2},
{'field1': 'E', 'total': 2}
]
expected result
{'A': 1, 'B': 4, 'C': 2, 'D': 2, 'E': 2}
what is the best way? regards
I would use values_list
to get list of tuples:
mygroupby = Mymodel.objects.all().annotate(total=Count('field1')).values_list('field1', "total")
and do final transformation in python:
result = {i[0]:i[1] for i in mygroupby}
it's probably suboptimal, but simple enough to figure out what's happening
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