Python elasticsearch-dsl django 分页 [英] Python elasticsearch-dsl django pagination
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问题描述
我如何在 elasticsearch dsl 上使用 django 分页.我的代码:
How can i use django pagination on elasticsearch dsl. My code:
query = MultiMatch(query=q, fields=['title', 'body'], fuzziness='AUTO')
s = Search(using=elastic_client, index='post').query(query).sort('-created_at')
response = s.execute()
// this always returns page count 1
paginator = Paginator(response, 100)
page = request.GET.get('page')
try:
posts = paginator.page(page)
except PageNotAnInteger:
posts = paginator.page(1)
except EmptyPage:
posts = paginator.page(paginator.num_pages)
有什么解决办法吗?
推荐答案
我在这个 链接:
from django.core.paginator import Paginator, Page
class DSEPaginator(Paginator):
"""
Override Django's built-in Paginator class to take in a count/total number of items;
Elasticsearch provides the total as a part of the query results, so we can minimize hits.
"""
def __init__(self, *args, **kwargs):
super(DSEPaginator, self).__init__(*args, **kwargs)
self._count = self.object_list.hits.total
def page(self, number):
# this is overridden to prevent any slicing of the object_list - Elasticsearch has
# returned the sliced data already.
number = self.validate_number(number)
return Page(self.object_list, number, self)
然后在视图中我使用:
q = request.GET.get('q', None)
page = int(request.GET.get('page', '1'))
start = (page-1) * 10
end = start + 10
query = MultiMatch(query=q, fields=['title', 'body'], fuzziness='AUTO')
s = Search(using=elastic_client, index='post').query(query)[start:end]
response = s.execute()
paginator = DSEPaginator(response, settings.POSTS_PER_PAGE)
try:
posts = paginator.page(page)
except PageNotAnInteger:
posts = paginator.page(1)
except EmptyPage:
posts = paginator.page(paginator.num_pages)
这样就完美运行了..
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