45 lines
1.5 KiB
Python
45 lines
1.5 KiB
Python
from django.db.models.query import QuerySet
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class CreateUpdateModelAMixin:
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"""
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业务用基本表A用
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"""
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def perform_create(self, serializer):
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serializer.save(create_by = self.request.user)
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def perform_update(self, serializer):
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serializer.save(update_by = self.request.user)
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class CreateUpdateModelBMixin:
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"""
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业务用基本表B用
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"""
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def perform_create(self, serializer):
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serializer.save(create_by = self.request.user, belong_dept=self.request.user.dept)
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def perform_update(self, serializer):
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serializer.save(update_by = self.request.user)
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class CreateUpdateCustomMixin:
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"""
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整合
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"""
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def perform_create(self, serializer):
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if hasattr(self.queryset.model, 'belong_dept'):
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serializer.save(create_by = self.request.user, belong_dept=self.request.user.dept)
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else:
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serializer.save(create_by = self.request.user)
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def perform_update(self, serializer):
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serializer.save(update_by = self.request.user)
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class OptimizationMixin:
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"""
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性能优化,需要在序列化器里定义setup_eager_loading,可在必要的View下继承
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"""
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def get_queryset(self):
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queryset = self.queryset
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if isinstance(queryset, QuerySet):
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# Ensure queryset is re-evaluated on each request.
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queryset = queryset.all()
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if hasattr(self.get_serializer_class(), 'setup_eager_loading'):
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queryset = self.get_serializer_class().setup_eager_loading(queryset) # 性能优化
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return queryset |