Hello everyone, I am new to Django. Now I want to learn to make a download function. Set up a hyperlink in the front-end html, get the file name through the background access method and download it.
The code is as follows:
Front desk: (relatively simple, just a table with hyperlinked words)
URL configuration:
urlpatterns = [ url(r'^admin/', admin.site.urls), url(r'^register/',views.userRigister,name='register'), url(r'^register/(.*)/$',views.file_download,name='download'), ]VIEW method:
def userRigister(req): status='welcome' #js alert出信息 return render(req, 'register.html', {'status':json.dumps(status)}) def file_download(request,filename): print(filename) def file_iterator(file_name, chunk_size=1024): with open(file_name) as f: while True: c = f.read(chunk_size) if c: yield c else: break if os.path.exists('software/' + filename): the_file_name = filename response = StreamingHttpResponse(file_iterator(the_file_name)) return response else: return HttpResponse('error!no such file!')My purpose is to select a downloadable browser when visiting the same page normally. After clicking the hyperlink button, access thefile_downloadmethod and download the corresponding browser. However, thefile_downloadmethod is currently unavailable, so please give me some advice. Thank you
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Django matches URLs from top to bottom in the URL list
Anything that can be matched by
^register/(.*)/$must be matched by the above^register/ matches^register/(.*)/$匹配的一定能被上面的^register/匹配所以就出现了
^register/(.*)/$So there is a situation where^register/(.*)/$never matchesThe solution is very simple, just change the order of these two
When using Django’s URL parsing function, remember that more detailed URLs should be placed farther forward, and more “blurred” URLs should be placed farther back.