姜戈。 Q对象动态生成

Question

模型字段有一个过滤器

queryset = queryset.filter(
            Q(title__icontains=search_text) |
            Q(description__icontains=search_text) |
            Q(name_icontains=search_text)
        )

如何根据情况生成区块

Q(title__icontains=search_text) |
Q(description__icontains=search_text)|
Q(name_icontains=search_text)

例如，在一种情况下，过滤器必须是这样的

Q(description__icontains=search_text) |
Q(name_icontains=search_text)

或

Q(title__icontains=search_text) |
Q(description__icontains=search_text) |

或

Q(title__icontains=search_text)

我可以使用字典生成 Q 对象例如

search_text = 'somthing text'
fields_name = ['title', 'description', 'name']

 queries = [ Q(**{field+'__icontains': search_text}) for field in fields_name]

但是这

[<Q: (AND: ('title__icontains': 'first'))>, <Q: (AND: ('description__icontains': 'first'))>, <Q: (AND: ('name__icontains': 'first'))>]

粘贴到过滤器中并使用 OR 分隔符

Answer 1

你可以做到

>>>[Q(**{field +'__contains': search_text}) for field in fields_name]

现在如果你想做一个OR

>>>import operator
>>>reduce(operator.or_, [Q(**{field+'__contains': search_text}) for field in fields_name])

与

相同

Q(title__icontains=search_text) |
Q(description__icontains=search_text)|
Q(name_icontains=search_text)

姜戈。 Q对象动态生成

Django. Q objects dynamicaly generate

python

django

django-q