Heroku 推送被拒绝，没有检测到 Cedar 支持的应用程序

我正在用 Rails 3.1创建一个 Rails 应用程序。3:

git init
git remote add heroku <my heroku repo>
git add .
git commit -a -m "First commit"
git push heroku master

得到:

Counting objects: 102, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (86/86), done.
Writing objects: 100% (102/102), 315.47 KiB, done.
Total 102 (delta 3), reused 0 (delta 0)


**-----> Heroku receiving push
!     Heroku push rejected, no Cedar-supported app detected**


To git@heroku.com:electric-dusk-3217.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to <my heroku rep>
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最佳答案

The problem was that my "Gemfile" was named "gemfile"

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I ran into this error message, but my problem was that my rails app was not in the root directory of my git repo. After I moved the files into the root dir, everything worked.

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I had the same issue. "Gemfile" was included in ".gitignore" and has therefore not been part of the deployment. Heroku requires Gemfile for Rails projects.

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I had a similar problem, but with Django (incorrectly named "requirements.txt"). I think to generalize the other answers here, when you get this error it's because Heroku is missing some key file that it uses to identify your app (and its type).

  • php: index.php
  • python: requirements.txt
  • ruby: Gemfile # note the capitalization
  • node: package.json
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Another cause of this error for Rails apps: we had this deploy error occur when we hadn't removed a git merge conflict from our Gemfile.lock file.

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I fixed this by making a superficial change to my Gemfile and recommitting. For some reason it wasn't included in my last commit.

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Heroku detects a supported app by looking for specific project files. To find the requirements for your language, start here.

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Not associated with a new app, but... I ran into this same error message after installing a custom BUILDPACK on heroku and then forgetting about it. The next time I went to deploy to heroku I saw:

-----> Fetching custom git buildpack... done


!     Push rejected, no Cedar-supported app detected

The fix was to check:

 heroku config

And, there, I found a Var called BUILDPACK_URL which I had to unset with:

heroku config:unset BUILDPACK_URL

... and voila!

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I met the same problem here.
My check as follow:
1. Make sure "foreman start" works well locally.
2. Make sure only one new app create on your heroku account.
Hope it help.

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I also had the problem with django based app. Everything seemed to be ok: file names and other settings.

The problem was that in heroku console there was a BUILDPACK_URL setting defined for node.js - thus django application was rejected.

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I was following the RailsTutorial.org steps and this error showed up. None of the answers on this post worked. Then I saw this comment that led to this answer which was the only thing that worked for me so that might solve other people's problems with the tutorial as well.

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Another cause: I was pushing master, while working on a non-master branch. My master branch didn't have requirements.txt.

I didn't want to push from master, but heroku only pays attention to the master branch. The solution was to push my local branch to heroku's master branch:

git push heroku local_branch:master
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When this problem appears with the project based on static files (only html, css and js) it is recommended to follow this guidlines: https://discussion.heroku.com/t/push-rejected-no-cedar-supported-app-detected/640/3


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