在Django 2中搜索数据后如何导出csv文件？

Question

I have a search function that returns json via ajax, but I also want to export the data to a csv file.

It occurred to me to do another function to export the data, which brings the search function

I'm doing it like this:

  def search(request):
    date = request.GET.get('date')

    queryset = List.objects.filter(date=date)
    data = serializers.serialize('json', queryset)

    return HttpResponse(data, content_type='application/json')

  def export_to_csv(request):
    data = search(request)
    # But that does not bring the search data
    print(data)
    # <HttpResponse status_code=200, "application/json">

I hope you understand my question, some ideas or suggestions?

Answer 1

Maybe you can try with simply extracting the logic which retrieves and serializes the data into a helper function, which can be a part of your views.py (or, probably a better approach, moved to a helper/utility module) eg:

def get_search_data(date=None):
    queryset = List.objects.all()        
    if date:
        queryset = queryset.filter(date=date)

    return serializers.serialize('json', queryset)

def search(request):
    data = get_search_data(request.GET.get('date'))
    return HttpResponse(data, content_type='application/json')

def export_to_csv(request):
    data = get_search_data()
    ...
    print(data)
    # <HttpResponse status_code=200, "application/json">