Django Custom Queryset filters

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刺人心
刺人心 2021-02-09 03:55

Is there, in Django, a standard way to write complex, custom filters for QuerySets?

Just as I can write

MyClass.objects.all().filter(field=val)
<         


        
2条回答
  •  忘了有多久
    2021-02-09 04:36

    The recommendation to start using manager methods is a good one, but to answer your question more directly: yes, use Q objects. For example:

    from django.db.models import Q
    
    complexQuery = Q(name__startswith='Xa') | ~Q(birthdate__year=2000)
    
    MyModel.objects.filter(complexQuery)
    

    Q objects can be combined with | (OR), & (AND), and ~ (NOT).

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