Django - 过滤外键属性 [英] Django - filtering on foreign key properties

问题描述

我试图根据外键的特定字段的值来过滤Django中的表。例如，我有两个模型 - Project和Asset，Project有一个名称字段，每个资产都有一个 ForeignKey（Project）字段。我想根据相关项目的名称过滤我的资产列表。

目前我正在执行两个查询：

  project_list = Project.objects.filter（name__contains =Foo）
 asset_list = Asset.objects.filter（desc__contains = filter，project__in = project_list）.order_by （'desc'）
  

我想知道是否有办法指定这种过滤主要查询？

解决方案

Asset.objects.filter（project__name__contains =Foo）

I'm trying to filter a table in Django based on the value of a particular field of a foreign key.

For example I have two models - Project and Asset, Project has a name field and each asset has a ForeignKey(Project) field. I'd like to filter my asset list based on the name of the associated project.

Currently I am performing two queries:

project_list = Project.objects.filter(name__contains="Foo")         
asset_list = Asset.objects.filter( desc__contains=filter, project__in=project_list).order_by('desc')

I'm wondering if there is a way to specify this kind of filtering in the main query?

解决方案

Asset.objects.filter( project__name__contains="Foo" )

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