如何将列表转换为queryset Django [英] How to convert a list in to queryset django

问题描述

我有一个如下的查询集(实际上已被过滤)

I have a queryset(which is filtered actually) as below

posts = [<Post: published>, <Post: needs>, <Post: be>, <Post: issues>, <Post: to>, <Post: tags>]

但是我需要使用来自另一个表/位置等的某些字段来手动过滤上面的查询集.

But i need to filter the above queryset manually with the some field coming from another table/place etc.

所以我过滤了以下内容

custom_list = []

for rec in posts:
    if 'string_or_field' in rec.tags.all():
        custom_list.extend(rec)

        or

custom_list = [rec for rec in posts if 'string_or_field' in rec.tags.all()]

因此，如上所述，我们通过过滤 queryset 创建了一个 list ，但我希望将结果作为 queryset .

So as we can observe above we are creating a list by filtering a queryset, but i want the result as a queryset.

那么有什么方法可以将 list 转换为 queryset 对象?

So is there any way to convert the list to queryset object ?

推荐答案

您可以先查询 Tag 对象，并使用这些ID过滤 Post :

You can query the Tag object first and filter Post with those ids:

tags = Tag.objects.filter(field_name='string_or_field')
posts = Post.objects.filter(tags__in=tags)

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