django_apps/detect_app/views.py

from django.http import HttpResponseRedirect
from django.shortcuts import render
from .apps import DetectAppConfig
from .forms import UploadFileForm
from .upload import handle_uploaded_file
from .detect import detect


def upload_file(request):
    result = None
    if request.method == 'POST':
        form = UploadFileForm(request.POST, request.FILES)
        if form.is_valid():
            input_path = DetectAppConfig.image_filebase + DetectAppConfig.image_file_input
            output_path = DetectAppConfig.image_filebase + DetectAppConfig.image_file_output
            output_url = DetectAppConfig.image_urlbase + DetectAppConfig.image_file_output

            handle_uploaded_file(request.FILES['file'], input_path)
            detect(input_path, output_path)
            result = output_url
    else:
        form = UploadFileForm()
    return render(request, 'detect_app/upload.html', {'form': form, 'result': result})