push rails app to heroku

Question

I am trying to push a rails application to heroku.

When I get to the last step:

git push heroku master

It doesn't work and gives me these errors:

Counting objects: 85, done. Delta compression using up to 2 threads. Compressing objects: 100% (74/74), done. Writing objects: 100% (85/85), 24.38 KiB, done. Total 85 (delta 23), reused 0 (delta 0) -----> Heroku receiving push ! Heroku push rejected, no Rails or Rack app detected. error: hooks/pre-receive exited with error code 1 To [email protected]:smooth-dusk-26.git ! [remote rejected] master -> master (pre-receive hook declined) error: failed to push some refs to '[email protected]:smooth-dusk-26.git'

I don't know what I'm doing wrong :(

jstreebin · Accepted Answer · 2011-12-10 00:15:46Z

Here's the answer I got from Heroku and it worked for me (after trying different pg gems, adapters, and everything else on the 10 other posts about this)

1) add the line: gem 'pg' to your Gemfile.

2) Run the command bundle install to install the gem into your bundle.

3) Stage the Gemfile and Gemfile.lock changes: git add Gemfile Gemfile.lock

4) Commit the changes: git commit -m "Install the pg gem"

5) Redeploy to heroku: git push heroku master

Dan, if this fixed your problem, it was due to the fact that Heroku uses Postgres as it's database in production. Presuming you're using sqlite locally, you'll need to add the pg gem so that your app can talk to heroku's db.

John Topley · Accepted Answer · 2009-12-29 12:08:10Z

7

When you created your Rails application, did you change directory into the directory of the application? You have to perform all the commands from within the application's directory.

rails myapp cd myapp

answered Dec 29, 2009 at 12:08

John Topley

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2 Comments

Lilz Over a year ago

yes i had changed it to the wrong directory tho :/ thnx. but now my css files won't work :/

Sam Soffes Over a year ago

My public directory is also broken :(

Robin Coxe · Accepted Answer · 2011-01-23 03:43:16Z

I encountered the same errors working through Chapter 1 of Michael Hartl's Rails Tutorial. They were eventually resolved by issuing another git commit command after opening a Heroku account and configuring the SSH keys: git commit -a -m "Heroku recommit"

git push heroku master then succeeded.

David Tuite · Accepted Answer · 2011-08-23 14:51:40Z

I just had the same problem trying to push my app to heroku and none of the above answers fixed it.

I solved the issue by emptying my RVM Gemset with rvm gemset empty, deleting my Gemfile.lock (probably best to just rename it) and reinstalling my gems. Pushing worked fine after this.

dangerous-when-sober · Accepted Answer · 2012-04-18 12:04:45Z

For me it was the presence of index.php that fixed it. Heroku seems to check for existence of index.php on pre-commit.

nazar kuliyev · Accepted Answer · 2011-04-25 07:42:27Z

Got the same problem under windows following one of the guides on ror site. After making everything like here http://devcenter.heroku.com/articles/quickstart it was solved.

Seems like problem was because of missing two lines.

cd myapp

git init

vladiim · Accepted Answer · 2011-12-10 11:09:21Z

1

Also, if you're on Rails 3.0 make sure you use the cedar stack

heroku create --stack cedar

answered Dec 10, 2011 at 11:09

vladiim

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Comments

Trapp · Accepted Answer · 2012-12-17 23:32:19Z

I went through the Rails Tutorial and didn't have a single problem with Heroku (MAC OS X), but you do have to follow the directions.

First, make sure you add/commit to Git. Then if you're in a -b (branch) you need to checkout into master, then merge the branch. If you've made changes to assets, you need to rake asset:precompile.

If you're having a rack up issue, make sure you have this file => config.ru and the contents should look like this.

# This file is used by Rack-based servers to start the application. require ::File.expand_path('../config/environment', __FILE__) run SampleApp::Application

I'm relatively new to Rails and Heroku, but as I mentioned above, if you're following the tutorial's directions, Heroku is a snap and the directions most definitely work. If not, I highly recommend getting started there!

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