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Django - remove duplicate objects where there is more than one field to compare
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| unique_fields = ['field_1', 'field_2'] | |
| duplicates = ( | |
| MyModel.objects.values(*unique_fields) | |
| .order_by() | |
| .annotate(max_id=models.Max('id'), count_id=models.Count('id')) | |
| .filter(count_id__gt=1) | |
| ) | |
| for duplicate in duplicates: | |
| ( | |
| MyModel.objects | |
| .filter(**{x: duplicate[x] for x in unique_fields}) | |
| .exclude(id=duplicate['max_id']) | |
| .delete() | |
| ) |
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