我正在使用Django jQuery与jQuery.我可以序列化分页对象的对象列表,但我想序列化整个对象以获取更多数据(页码,总页数……).
如何序列化整个分页对象？
如何序列化整个分页对象？
谢谢
JavaScript的
function getRestaurants(query) {
$.post("/getRestaurant/",query,function(data) {
/* do stuff with data */
},"json" );
}
views.py
def getRestaurant(request):
results = Restaurant.objects.all()
paginator = Paginator(restaurants,5)
# Make sure page request is an int. If not,deliver first page.
try:
page = int(request.POST.get('page','1'))
except ValueError:
page = 1
# If page request (9999) is out of range,deliver last page of results.
try:
results = paginator.page(page)
except (EmptyPage,InvalidPage):
results = paginator.page(paginator.num_pages)
data=serializers.serialize("json",results.object_list) #I'd like to serialize the whole results object
return HttpResponse(data)
解决方法
我只需要为此制作一个hacky解决方案,所以我会将其作为答案发布 – 欢迎任何改进：
from django.core import serializers
from django.core.paginator import Paginator,InvalidPage,EmptyPage
from django.core.serializers.json import DjangoJSONEncoder
from django.http import HttpResponse
from django.utils import simplejson
from types import MethodType
from mysite.tasks.models import Task
PER_PAGE = 20
def list(request):
"""
Return a paginated JSON object.
"""
paginator = Paginator(tasks.objects.all(),PER_PAGE)
try:
page = int(request.GET.get('page',deliver last page of results.
try:
pagetasks = paginator.page(page)
except (EmptyPage,InvalidPage):
pagetasks = paginator.page(paginator.num_pages)
# Dump the Page attributes we want to a dictionary
serializedpage = {}
wanted = ("end_index","has_next","has_other_pages","has_prevIoUs","next_page_number","number","start_index","prevIoUs_page_number")
for attr in wanted:
v = getattr(tasks,attr)
if isinstance(v,MethodType):
serializedpage[attr] = v()
elif isinstance(v,(str,int)):
serializedpage[attr] = v
# Serialise the queryset to plain Python objects
# and add them to the serialized page dictionary
pythonserializer = serializers.get_serializer("python")()
serializedpage["object_list"] = pythonserializer.serialize(pagetasks.object_list,fields=('task_id','task_data'))
# Dump it as JSON using the Django encoder
response = HttpResponse(mimetype="application/json")
simplejson.dump(serializedpage,response,cls=DjangoJSONEncoder)
return response