当我尝试将我的 Django 项目部署到 Heroku 时，它没有检测到 buildpack。 有人可以帮我吗？

Question

I have tried all methods in the documentation but still I am having the same issue.

Answer 1

No default language could be detected for this app.

You need to specify a buildpack. It can't pick a default language because you are either missing files (eg requirements.txt ) or you have too many like Aptfile , Gemfile , package,json , etc.
So if you have requirements.txt and package.json it does not know if your project uses python or node or even both.

Here I am using multiple buildpacks: https://i.imgur.com/LNHZAKe.png

Add the buildpacks either through CLI or through the dashboard .

Answer 2

did you make necessary changes in your settings.py,created Procfile, and all requirmenets packages in requirements.txt by

pip freeze > requirements.txt

if not please check this link heroku django configure

please share your settings.py file by copying code not as screenshot what i can see it says no default language detected make sure that there is default language in your settings.py in language code

Answer 3

1. You need to add a Procfile at the root of your project with content such as

   web: gunicorn yourproject.wsgi --log-file--

2. You also need to specify the runtime python version to use.

   You do that by creating runtime.txt at the root your project with content python-3.7.9

3. If you didn't create one before, we need to create a requirements.txt file to tell Heroku what Python packages need to be installed on our server.