Python Django Rest框架相关字段筛选

我刚开始用DRF编码，我遇到了一个问题，我必须从相关外键进行搜索

我有两个模型，图书资料和复印件

BookCopies将BookDetails作为外键在其中引用

现在我想使用模型BookDetails中的属性title搜索BookCopy

我使用了django_rest_framework_过滤器，如下所示，但当我访问时，它会给出一个错误

看法

序列化程序

class CopyViewSerializer(ModelSerializer):
    class Meta:
        model = BookCopy
        fields = "__all__"

错误跟踪

KeyError at /book/copy/
'book_details__title'
Request Method: GET
Request URL:    http://localhost:8000/book/copy/?book_details__title=abc
Django Version: 1.10.5
Exception Type: KeyError
Exception Value:    
'book_details__title'
Exception Location: /Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/site-packages/django_filters/filterset.py in qs, line 335
Python Executable:  /Applications/MAMP/htdocs/python/01-virtual-env/bin/python
Python Version: 2.7.10
Python Path:    
['/Applications/MAMP/htdocs/library-new/services',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python27.zip',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/plat-darwin',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/plat-mac',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/plat-mac/lib-scriptpackages',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/lib-tk',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/lib-old',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/lib-dynload',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/site-packages',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/site-packages/Django-1.10.5-py2.7.egg',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/site-packages/MySQL_python-1.2.5-py2.7-macosx-10.12-intel.egg']
Server time:    Tue, 24 Jan 2017 13:35:36 +0000

---

请帮忙。谢谢

要获得所需的行为，您需要在模型中提供等于

相关名称

的

参数。默认情况下，它等于FilterSet中的字段名。因此，如果是
book\u details
，您可以跳过它

class CopyFilter(FilterSet):
    book_details = RelatedFilter(BookFilter, name="book_details", queryset=BookDetail.objects.all()

顺便说一下，您的错误堆栈中没有堆栈。
您可以发布错误回溯吗？还可以提供您正在使用的视图吗？您好，非常抱歉，我回复有点晚。我用错误回溯和我使用的视图更新了问题我尝试了它。没用。同样的问题。在我看来，我是这样做的。def get_queryset（self）：并使用它来执行我想要的自定义过滤
KeyError at /book/copy/
'book_details__title'
Request Method: GET
Request URL:    http://localhost:8000/book/copy/?book_details__title=abc
Django Version: 1.10.5
Exception Type: KeyError
Exception Value:    
'book_details__title'
Exception Location: /Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/site-packages/django_filters/filterset.py in qs, line 335
Python Executable:  /Applications/MAMP/htdocs/python/01-virtual-env/bin/python
Python Version: 2.7.10
Python Path:    
['/Applications/MAMP/htdocs/library-new/services',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python27.zip',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/plat-darwin',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/plat-mac',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/plat-mac/lib-scriptpackages',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/lib-tk',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/lib-old',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/lib-dynload',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/site-packages',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/site-packages/Django-1.10.5-py2.7.egg',
 '/Applications/MAMP/htdocs/python/01-virtual-env/lib/python2.7/site-packages/MySQL_python-1.2.5-py2.7-macosx-10.12-intel.egg']
Server time:    Tue, 24 Jan 2017 13:35:36 +0000

class CopyFilter(FilterSet):
    book_details = RelatedFilter(BookFilter, name="book_details", queryset=BookDetail.objects.all()