Goal

• How to impletement the function which support file download in Django

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Intro

• I wanted to make people download apk file in my REST server

Practice

1. Create App and setup files

1.1. Start app

(venv) $ python manage.py startapp [APP_NAME]

1.2 Setup files to be downloaded

• You can put files in anywhere, but I made ‘files’ directory in created app directory. And I put my files in there.
• In my case, I created new sub directory name ‘apk’ and put my apk files in there.

2. Create function for download

• Code

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############################################################ # # Request for downloading # ############################################################ # Version Date Author Description ############################################################ # 1.0.0 2019-06-26 dorbae Initialize ############################################################ from django.http import HttpResponse, Http404 import os # Django project base directory BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__))) # # Download APK file # def download_apk(request, file_base_name): print('Download ' + file_base_name + '.apk...') # Full path of file file_path = BASE_DIR + '/download/files/apk/' + file_base_name + '.apk' if os.path.exists(file_path): with open(file_path, 'rb') as fh: response = HttpResponse(fh.read(), content_type="application/force_download") response['Content-Disposition'] = 'inline; filename=' + os.path.basename(file_path) return response # If file is not exists raise Http404

3. URL Mapping

3.1. Edit [APP]/urls.py

• Code

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from django.urls import path from . import views urlpatterns = [ path('apks/<str:file_base_name>/', views.download_apk, name='download_apk'), ]

3.2. Edit [PROJECT]/urls.py

• Add URL Pattern

4. Test

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References

• Stackoverflow