Python 在Django中将参数从函数传递到另一个函数
我在Python 在Django中将参数从函数传递到另一个函数,python,django,excel,Python,Django,Excel,我在views.py中有两个函数,即:create\u excel和section\u landpins 第节\u定位销: def section_landpins(request): if request.method == "GET": get_id = request.user.id pnt = ButuanMaps.objects.get(clandpin='162-03-0001-017-33').geom kmdistance
views.py
中有两个函数,即:create\u excel
和section\u landpins
第节\u定位销
:
def section_landpins(request):
if request.method == "GET":
get_id = request.user.id
pnt = ButuanMaps.objects.get(clandpin='162-03-0001-017-33').geom
kmdistance = request.GET.get('kmtocity', default=100)
mysection = request.GET.get('mysection', default='All')
getarea = request.GET.get('getarea', default=5500000)
getvalue = request.GET.get('mysoiltype', default=0)
getvalue1 = request.GET.get('myerosion', default=0)
args = []
kwargs = {
'landproperty__sownerid__id': get_id,
'geom__distance_lte': (pnt, D(km=kmdistance)),
'narea__lte': getarea
}
if mysection != 'All':
kwargs['ssectionid__id'] = mysection
if getvalue != '0':
args.append(Q(geom__intersects=SoilType.objects.get(id=getvalue).geom))
if getvalue1 != '0':
args.append(Q(geom__intersects=ErosionMap.objects.get(id=getvalue1).geom))
#this queryset below, I want this to be pass to `create_excel` function
m = ButuanMaps.objects.filter(*args, **kwargs).values_list('clandpin')
return HttpResponse(json.dumps(list(m)), content_type='application/json')
我想将变量m
传递给另一个函数以过滤我的excel文件
以下是创建excel
:
def create_excel(request):
book = xlwt.Workbook(encoding='utf8')
sheet = book.add_sheet('untitled')
default_style = xlwt.Style.default_style
datetime_style = xlwt.easyxf(num_format_str='dd/mm/yyyy hh:mm')
date_style = xlwt.easyxf(num_format_str='dd/mm/yyyy')
headers = [f.name for f in SOMEMODELHERE._meta.fields]
#values should have the query of m from `section_landpins`
values = LandProperty.objects.all().values_list()
values_list = [headers] + list(values)
for row, rowdata in enumerate(values_list):
for col, val in enumerate(rowdata):
if isinstance(val, datetime):
style = datetime_style
elif isinstance(val, date):
style = date_style
else:
style = default_style
sheet.write(row, col, val, style=style)
response = HttpResponse(mimetype='application/vnd.ms-excel')
response['Content-Disposition'] = 'attachment; filename=example.xls'
book.save(response)
return response
如何获取或传递查询集
m
从部分\u landpins
到创建\u excel
函数,以过滤excel文件结果?听起来您想在不同请求之间访问变量。有几种方法可以做到这一点:
def section_landpins(request):
queryset = get_landpins_from_request(request)
return HttpResponse(json.dumps(list(queryset)), content_type='application/json')
def create_excel(request):
queryset = get_landpins_from_request(request)
# Do rest of processing here
return response
def get_landpins_from_request(request):
"Returns queryset of landpins based on GET request."
# Add processing of request.GET into a queryset here
return queryset
您可以根据需要更改代码
def section_landpins(request):
if request.method == "GET":
get_id = request.user.id
pnt = ButuanMaps.objects.get(clandpin='162-03-0001-017-33').geom
kmdistance = request.GET.get('kmtocity', default=100)
mysection = request.GET.get('mysection', default='All')
getarea = request.GET.get('getarea', default=5500000)
getvalue = request.GET.get('mysoiltype', default=0)
getvalue1 = request.GET.get('myerosion', default=0)
args = []
kwargs = {
'landproperty__sownerid__id': get_id,
'geom__distance_lte': (pnt, D(km=kmdistance)),
'narea__lte': getarea
}
if mysection != 'All':
kwargs['ssectionid__id'] = mysection
if getvalue != '0':
args.append(Q(geom__intersects=SoilType.objects.get(id=getvalue).geom))
if getvalue1 != '0':
args.append(Q(geom__intersects=ErosionMap.objects.get(id=getvalue1).geom))
#this queryset below, I want this to be pass to `create_excel` function
request.m = ButuanMaps.objects.filter(*args, **kwargs).values_list('clandpin')
return create_excel(request)
def create_excel(request):
book = xlwt.Workbook(encoding='utf8')
sheet = book.add_sheet('untitled')
default_style = xlwt.Style.default_style
datetime_style = xlwt.easyxf(num_format_str='dd/mm/yyyy hh:mm')
date_style = xlwt.easyxf(num_format_str='dd/mm/yyyy')
headers = [f.name for f in SOMEMODELHERE._meta.fields]
#the required queryset can be accessed this way
values = request.m
values = LandProperty.objects.all().values_list()
values_list = [headers] + list(values)
for row, rowdata in enumerate(values_list):
for col, val in enumerate(rowdata):
if isinstance(val, datetime):
style = datetime_style
elif isinstance(val, date):
style = date_style
else:
style = default_style
sheet.write(row, col, val, style=style)
response = HttpResponse(mimetype='application/vnd.ms-excel')
response['Content-Disposition'] = 'attachment; filename=example.xls'
book.save(response)
return response
我认为这会起作用。我使用了
create\u excel
函数作为模板中与部分\u landpins
相同页面的链接。啊,好的,所以您希望在不同的请求中使用变量。我将编辑答案。是的,在相同的模板中单独请求,即profile.html
。你能告诉我如何做第一件事吗?因为我使用了section\u landpins
函数进行搜索筛选,并通过JSON将结果传递给模板。尝试使用why-not为m尝试一个全局变量,并在section\u landpins中分配它,然后在create中使用它_excel@Aameer不可以。在像web框架这样的无状态环境中,不能对状态使用全局变量think function section\u landpins将显示错误,因为它必须返回HttpResponse。我认为没有,因为create\u excel也在返回HttpResponse。不,我仍然需要functionsection\u landpins
中的数据。实际上,它是一个模板中的两个独立请求,我只想从部分\u landpins
函数中获取查询集,以过滤创建\u excel
。这不是实际的httpresponse。您的响应是一个函数对象,它正在调用另一个具有httpresponse的函数。您应该在概念上尝试它,我们似乎正在返回httpresponse,但它显示了错误。请看,我刚刚尝试了类似的代码,它工作正常。它正在按预期返回httpresponse。如果你觉得可以的话,你可以试试。