[英]Search filter django drf
我想一次将图像作为多个搜索关键字:
视图.py:
class ImageSearchView(generics.ListAPIView):
authentication_classes = []
permission_classes = []
queryset = Image.objects.all()
serializer_class = ImageSearchSerializer
filter_backends = (filters.SearchFilter,)
search_fields = ['image_keyword']
模型.py:
class Image(models.Model):
license_type = (
('Royalty-Free','Royalty-Free'),
('Rights-Managed','Rights-Managed')
)
image_number = models.CharField(default=random_image_number,max_length=12,unique=True)
title = models.CharField(default=random_image_number,max_length = 100)
image = models.ImageField(upload_to = 'image' , default = 'demo/demo.png')
thumbnail = models.ImageField(upload_to='thumbs', blank=True, null=True)
category = models.ForeignKey('Category', null=True, blank=True, on_delete=models.CASCADE)
shoot = models.ForeignKey(ImageShoot, on_delete=models.CASCADE, related_name='Image', null=True,blank=True)
image_keyword = models.TextField(max_length=1000)
def __str__(self):
return self.title
网址.py:
path('image_search/',views.ImageSearchView.as_view(), name = 'image_search'),
当我向邮递员提出请求时:
localhost:8000/api/image_search?search=boxing cricket kohli marykom
如果我把 & 放在它们之间,那么它也不起作用:
我建议你在这种情况下使用django-filter
,你可以在这里阅读更多:
https://www.django-rest-framework.org/api-guide/filtering/#djangofilterbackend
https://django-filter.readthedocs.io/en/latest/guide/rest_framework.html
如果你不想安装任何东西-你可以覆盖get_queryset
你的方法ListAPIView
。 您需要获取所需的所有查询参数并返回由它们过滤的查询集。 在这种情况下,您的代码将是这样的:
def get_queryset(self, request, *args, **kwargs):
queryset = Image.objects.all()
keywords = self.request.query_params.get('search')
if keywords:
queryset = queryset.filter(image_keyword__in=keywords.split(','))
return queryset
在这种情况下,请确保从ImageSearchView
类中删除filter_backends
、 search_fields
和queryset
字段
django-rest-framework-filters 包与 DjangoFilterBackend 类一起工作,并允许您轻松地跨关系创建过滤器,或为给定字段创建多个过滤器查找类型。
在那里阅读
我认为为您准备的那部分文档
title__startswith=Who, title__startswith=What
title__startswith%3DWho, title__startswith%3DWhat
(title__startswith%3DWho) | (title__startswith%3DWhat)
%28title__startswith%253DWho%29%20%7C%20%28title__startswith%253DWhat%29
filters=%28title__startswith%253DWho%29%20%7C%20%28title__startswith%253DWhat%29
您是否尝试过像这样多次指定搜索参数? 在这种情况下,它应该“搜索”查询参数最终应该是一个列表。
localhost:8000/api/image_search?search=&search=boxing&search=cricket&search=kohli&search=marykom
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