python - 如何在 Django 中动态组合 OR 查询过滤器？

Question

从一个例子你可以看到一个多重 OR 查询过滤器:

Article.objects.filter(Q(pk=1) | Q(pk=2) | Q(pk=3))

例如，这会导致:

[<Article: Hello>, <Article: Goodbye>, <Article: Hello and goodbye>]

但是，我想从列表中创建此查询过滤器。该怎么做？

例如[1, 2, 3] -> Article.objects.filter(Q(pk=1) | Q(pk=2) | Q(pk=3))

Answer 1

您可以将查询链接如下:

values = [1,2,3]

# Turn list of values into list of Q objects
queries = [Q(pk=value) for value in values]

# Take one Q object from the list
query = queries.pop()

# Or the Q object with the ones remaining in the list
for item in queries:
    query |= item

# Query the model
Article.objects.filter(query)