page_kwarg()
是Django中一个用于分页的辅助函数。它的作用是获取Web请求中提供的Page参数,并将其加入到作为分页查询参数的字典中。我们可以通过这个函数来设置分页参数的默认值。
该函数的具体参数如下:
page_kwarg(page_query_param='page')
page_query_param
:分页参数的名称,默认为“page”。
使用方法:
1.导入page_kwarg函数
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger, page_kwarg
2.调用page_kwarg函数
def get(self,request:*HttpRequest, *args: Any, **kwargs: Any) -> Union[HttpResponse, Http404]:
page = request.GET.get(page_kwarg)
paginator = Paginator(queryset, 10)
try:
res = paginator.page(page)
except PageNotAnInteger:
res = paginator.page(1)
except EmptyPage:
res = paginator.page(paginator.num_pages)
return render(request, 'blog/blog_list.html', {'blog_list': res})
实例1:博客列表
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger, page_kwarg
class BlogListView(View):
def get(self,request:*HttpRequest, *args: Any, **kwargs: Any) -> Union[HttpResponse, Http404]:
blog_list = BlogModel.objects.all()
page = request.GET.get(page_kwarg)
paginator = Paginator(blog_list, 10)
try:
res = paginator.page(page)
except PageNotAnInteger:
res = paginator.page(1)
except EmptyPage:
res = paginator.page(paginator.num_pages)
return render(request, 'blog/blog_list.html', {'blog_list': res})
实例2:图书列表
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger, page_kwarg
class BookListView(View):
def get(self,request:*HttpRequest, *args: Any, **kwargs: Any) -> Union[HttpResponse, Http404]:
book_list = BookModel.objects.all()
page = request.GET.get(page_kwarg)
paginator = Paginator(book_list, 6)
try:
res = paginator.page(page)
except PageNotAnInteger:
res = paginator.page(1)
except EmptyPage:
res = paginator.page(paginator.num_pages)
return render(request, 'book/book_list.html', {'book_list': res})
以上两个实例中,为了实现对列表数据的分页展示,我们需要先将数据集(如博客或图书)通过Django的Paginator类进行分页处理。page_kwarg()
函数的作用在于,通过接收用户传入的Page参数并将其加入作为分页查询参数的字典中,实现分页功能的更加灵活和定制化。
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