Django的。(Django. Q objects dynamicaly generate)

Django的。(Django. Q objects dynamicaly generate)

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) )

我怎么能根据情况生成块

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）

要么

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

要么

Q（= title__icontains SEARCH_TEXT）

例如，我可以使用字典生成Q对象

search_text = 'somthing text' fields_name = ['title', 'description', 'name'] queries = [ Q(**{field+'__icontains': search_text}) for field in fields_name]

但是怎么样

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

粘贴到过滤器并使用OR分隔符

There is a filter for the model fields

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

How i can do generate block according to circumstances

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

For example, in one case it is necessary that the filter be such

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

or

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

or

Q(title__icontains=search_text)

I could generate Q objects using a dictionary for example

search_text = 'somthing text' fields_name = ['title', 'description', 'name'] queries = [ Q(**{field+'__icontains': search_text}) for field in fields_name]

but how this

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

paste into filter and use OR separator

最满意答案

你可以做

>>>[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])

哪个是一样的

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

You can do

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

Now if you want to do an OR

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

Which is the same as

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