import django_filtersfrom .models import ArticleclassArticleFilter(django_filters.FilterSet): q = django_filters.CharFilter(field_name='title', lookup_expr='icontains')classMeta: model = Article fields = ('title', 'status')2.4 将自定义 FilterSet 类加入到 View 类或 ViewSet，另外还...
3. 自定义FilterSet类。这里我们自定义了按标题关键词和文章状态进行过滤。# blog/filters.py(新建)import django_filters from .models import Article class ArticleFilter(django_filters.FilterSet): q = django_filters.CharFilter(field_name='title', lookup_expr='icontains') class Meta: model = Article...
res2 = Book.objects.filter(publish='机械出版社', price='100') print(res2) #<QuerySet [<Book: Book object (9)>]> return HttpResponse("select ok") 多表操作的知识储备 多表关联是模型层的重要功能之一,Django提供了一套基于关联字段独特的解决方案。那就是用OneToOneField,ForeignKey,ManyToMany。 1...
authors = Author.objects.filter(book__title__contains='Python') 腾讯云相关产品和产品介绍链接地址:在腾讯云中,可以使用云数据库MySQL、云服务器等产品来支持Django ORM的ManyToMany关系模型的查询。具体的产品介绍和链接地址可以参考腾讯云官方文档。 需要注意的是,以上只是一些基本的查询示例,实际应用中可能会...
3. 自定义FilterSet类。这里我们自定义了按标题关键词和文章状态进行过滤。 # blog/filters.py(新建) import django_filters from .models import Article class ArticleFilter(django_filters.FilterSet): q = django_filters.CharFilter(field_name='title', lookup_expr='icontains') ...
Entry.objects.filter(pub_date__isnull=True) # contains #包含 等同sql语句like操作 # # models.Tb1.objects.filter(name__contains="ven") # models.Tb1.objects.filter(name__icontains="ven") # icontains大小写不敏感 # models.Tb1.objects.exclude(name__icontains="ven") # range # # models....
I'm trying to search through a ManyToMany relationship, but I'm doing something wrong and I'm not sure about what it is t= Teacher.objects.get(username=u.username)var= list(Allowed.objects.filter(allowed=t)) This is the class I'm using: ...
ta = Teacher.objects.filter(course__contains="a") 1. 2. 3. 4. 5. 6. 7. 8. 数据库表关系 多表连查:利用多个表联合查找莫一项信息或多项信息 models.py fromdjango.dbimportmodels # Create your models here. classSchool(models.Model): ...
For example, if an owner can own multiple cars and cars can belong to multiple owners – a many to many relationship – you could filter the Car foreign key field to only display the cars owned by the User: class MyModelAdmin(admin.ModelAdmin): def formfield_for_manytomany(self, db_...
It works backwards,#too. To refer to a “reverse” relationship, just use the lowercase name of the model.>>> Blog.objects.filter(entry__headline__contains='Lennon')>>> Blog.objects.filter(entry__authors__name='Lennon') #ManyToMany关系,反向连接>>> myblog = Blog.objects.get(id=1)>>...