Here’s what worked for me.

Clone OpenProject repo:

git clone https://github.com/opf/openproject.git your_app_name

Go into project directory and checkout stable branch:

cd your_app_name
git checkout stable

Create copy of stable branch (My thought here is that I do not want to make changes in the stable branch, so i can pull updates from remote and then merge them into my branch which I use to deploy to Heroku. I’m new to Git, so there may be a better approach):

git checkout -b your_branch_name origin/stable

Fire up your text editor and make the following file updates and additions.

Edit config/environments/production.rb as follows:

# Disable Rails's static asset server (Apache or nginx will already do this)
  #config.serve_static_assets = false
  config.serve_static_assets = true

Create database.yml file in /config folder (this example is for Postgres):

development:
  adapter: postgresql
  encoding: unicode
  database: your_app_name_development
  pool: 5
  username: your_app_name
  password:

test:
  adapter: postgresql
  encoding: unicode
  database: your_app_name_test
  pool: 5
  username: your_app_name
  password:

production:
  adapter: postgresql
  encoding: unicode
  database: your_app_name_production
  pool: 5
  username: your_app_name
  password:

Edit gemfile, remove non-postgres gem references (I also commented out the jruby block for good measure) and move gem ‘thin’ outside of development block:

#platforms :mri, :mingw do
#  group :mysql2 do
#    gem "mysql2", "~> 0.3.11"
#  end

#  group :postgres do
      gem 'pg', "~> 0.17.1"
#  end

#  group :sqlite do
#    gem "sqlite3"
#  end

group :development do
  gem 'letter_opener', '~> 1.0.0'
  gem 'rails-dev-tweaks', '~> 0.6.1'
#  gem 'thin'
  gem 'faker'
  gem 'quiet_assets'
end

gem 'thin'

Get it running locally.

Create database user:

create user "your_app_name" with superuser password '';

Run bundle tasks:

bundle install --without mysql mysql2 sqlite development test
bundle exec rake generate_secret_token
bundle exec rake db:create:all
bundle exec rake db:migrate db:seed RAILS_ENV=production
bundle exec rake assets:precompile

NEVER RUN bundle update! (this screwed things up for me)

Start up rails server:

RAILS_ENV=production bundle exec rails server

Go to localhost:3000 (site should be running) login is admin/admin.

Make sure to commit your changes.

Now the Heroku stuff.

Create new Heroku app:

heroku apps:create your_app_name

Set secret token:

heroku config:set SECRET_TOKEN=your_secret_token

Install the Postgres add-on:

heroku addons:add heroku-postgresql

Push project to Heroku:

git push heroku your_branch_name:master

It takes long time to bundle, pray for no error messages.

Run database migrations:

heroku run rake db:migrate

Run database seed:

heroku run rake db:seed

Go to http://your_app_name.herokuapp.com

Hopefully it works!

Your instructions are excelent Troy. But in my case, I have to make some changes to get it working:

Database

Don’t use the pool property and add the host property for all the databases

production:
  adapter: postgresql
  encoding: unicode
  database: psql_database
  host: localhost
  username: psql_user_name
  password: psql_user_pass

Procfile

Edit the file Procfile and pay attention to the web: line. It should match Heroku’s policies. In my case, commenting the default value and adding the correct value that Heroku provides. It should looks like this:

# web: bundle exec unicorn --config-file config/unicorn.rb --host ${HOST:="127.0.0.1"} --port ${PORT:="8080"} --env ${RAILS_ENV:="development"}
web: bundle exec unicorn -p $PORT -c ./config/unicorn.rb
worker: bundle exec rake jobs:work
backup: ./packaging/scripts/backup
check: ./packaging/scripts/check

Make sure to commit and push the changes! :-)

Hi all,

I just wanted to know. After you installed Open Project on Heroku, were you able to store files as anexes of the tasks? Or store any kind of file? My concern is that I had previous problems with saving uploaded files directly in the file system in heroku, in my previous experience something like paperclip should be necessary.
I want to know because this is crucial to my project. Im trying to deploy to heroku but I have not successed yet, I need to know if it will be worth it to try to push this heroku idea.
Thanks in advance and thanks for your instructions.

We did it in a slightly different, concise way: http://www.imeos.com/blog/2015/03/18/deploy-openproject-to-heroku-the-easy-way/

i got error

Installing nio4r 2.5.2 with native extensions

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory:

C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/nio4r-2.5.2/ext/nio4r

C:/Ruby26-x64/bin/ruby.exe -I C:/Ruby26-x64/lib/ruby/2.6.0 -r

./siteconf20200324-3460-1ejjszg.rb extconf.rb

current directory: C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/nio4r-2.5.2/ext/nio4r

make "DESTDIR=" clean

current directory: C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/nio4r-2.5.2/ext/nio4r

make "DESTDIR="

make failedNo such file or directory - make "DESTDIR="

Gem files will remain installed in

C:/Ruby26-x64/lib/ruby/gems/2.6.0/gems/nio4r-2.5.2 for inspection.

Results logged to

C:/Ruby26-x64/lib/ruby/gems/2.6.0/extensions/x64-mingw32/2.6.0/nio4r-2.5.2/gem_make.out

An error occurred while installing nio4r (2.5.2), and Bundler cannot continue.

Make sure that `gem install nio4r -v '2.5.2' --source 'https://rubygems.org/'`

succeeds before bundling.

In Gemfile:

 openproject-openid_connect was resolved to 1.0.0, which depends on

   lobby_boy was resolved to 0.1.3, which depends on

     rails was resolved to 6.0.2.2, which depends on

       actioncable was resolved to 6.0.2.2, which depends on

         nio4r

how to fix this?