推送拒绝，无法编译Ruby应用程序

时间：2016-08-26 10:15:17

标签： ruby-on-rails ruby git heroku

我在尝试运行git push heroku master

时收到被拒绝的错误 
remote:        Bundle complete! 19 Gemfile dependencies, 64 gems now installed.
remote:        Gems in the groups development and test were not installed.
remote:        Bundled gems are installed into ./vendor/bundle.
remote:        Post-install message from rdoc:
remote:        Depending on your version of ruby, you may need to install ruby r
doc/ri data:
remote:        <= 1.8.6 : unsupported
remote:        = 1.8.7 : gem install rdoc-data; rdoc-data --install
remote:        = 1.9.1 : gem install rdoc-data; rdoc-data --install
remote:        >= 1.9.2 : nothing to do! Yay!
remote:        Post-install message from haml:
remote:        HEADS UP! Haml 4.0 has many improvements, but also has changes th
at may break
remote:        your application:
remote:        * Support for Ruby 1.8.6 dropped
remote:        * Support for Rails 2 dropped
remote:        * Sass filter now always outputs <style> tags
remote:        * Data attributes are now hyphenated, not underscored
remote:        * html2haml utility moved to the html2haml gem
remote:        * Textile and Maruku filters moved to the haml-contrib gem
remote:        For more info see:
remote:        http://rubydoc.info/github/haml/haml/file/CHANGELOG.md
remote:        Bundle completed (25.35s)
remote:        Cleaning up the bundler cache.
remote: -----> Preparing app for Rails asset pipeline
remote:        Running: rake assets:precompile
remote:        rake aborted!
remote:        Gem::LoadError: Specified 'postgresql' for database adapter, but
the gem is not loaded. Add `gem 'pg'` to your Gemfile (and ensure its version is
 at the minimum required by ActiveRecord).
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/connection_s
pecification.rb:177:in `rescue in spec'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/connection_s
pecification.rb:174:in `spec'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_handling.rb:50:in `es
tablish_connection'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/railtie.rb:120:in `block (2 leve
ls) in <class:Railtie>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:38:in `inst
ance_eval'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:38:in `exec
ute_hook'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:45:in `bloc
k in run_load_hooks'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:44:in `each
'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:44:in `run_
load_hooks'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/base.rb:315:in `<module:ActiveRe
cord>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/base.rb:26:in `<top (required)>'

remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/devise-3.4.1/lib/devise/orm/active_record.rb:3:in `<top (required)>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `requir
e'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `block
in require'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in `load_d
ependency'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `requir
e'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/config/initializers/d
evise.rb:22:in `block in <top (required)>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/devise-3.4.1/lib/devise.rb:293:in `setup'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/config/initializers/d
evise.rb:3:in `<top (required)>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `load'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `block
in load'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in `load_d
ependency'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `load'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/engine.rb:652:in `block in load_config_initi
alizer'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/notifications.rb:166:in `instr
ument'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/engine.rb:651:in `load_config_initializer'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/engine.rb:616:in `block (2 levels) in <class
:Engine>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/engine.rb:615:in `each'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/engine.rb:615:in `block in <class:Engine>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:30:in `instance_exec'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:30:in `run'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:55:in `block in run_initial
izers'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:44:in `each'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:44:in `tsort_each_child'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:54:in `run_initializers'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/application.rb:352:in `initialize!'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/config/environment.rb
:5:in `<top (required)>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `requir
e'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `block
in require'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in `load_d
ependency'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `requir
e'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/application.rb:328:in `require_environment!'

remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/application.rb:457:in `block in run_tasks_bl
ocks'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/task.rb:62:in `block (2 level
s) in define'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/rake-11.2.2/exe/rake:27:in `<top (required)>'
remote:        Gem::LoadError: can't activate pg (~> 0.15), already activated pg
-0.12.2. Make sure all dependencies are added to Gemfile.
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/bundler-1.11.2/lib/bundler/rubygems_integration.rb:314:in `block in rep
lace_gem'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/postgresql_a
dapter.rb:16:in `<top (required)>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `requir
e'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `block
in require'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in `load_d
ependency'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `requir
e'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_adapters/connection_s
pecification.rb:175:in `spec'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/connection_handling.rb:50:in `es
tablish_connection'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/railtie.rb:120:in `block (2 leve
ls) in <class:Railtie>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:38:in `inst
ance_eval'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:38:in `exec
ute_hook'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:45:in `bloc
k in run_load_hooks'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:44:in `each
'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/lazy_load_hooks.rb:44:in `run_
load_hooks'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/base.rb:315:in `<module:ActiveRe
cord>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activerecord-4.2.5.1/lib/active_record/base.rb:26:in `<top (required)>'

remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/devise-3.4.1/lib/devise/orm/active_record.rb:3:in `<top (required)>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `requir
e'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `block
in require'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in `load_d
ependency'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `requir
e'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/config/initializers/d
evise.rb:22:in `block in <top (required)>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/devise-3.4.1/lib/devise.rb:293:in `setup'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/config/initializers/d
evise.rb:3:in `<top (required)>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `load'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `block
in load'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in `load_d
ependency'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:268:in `load'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/engine.rb:652:in `block in load_config_initi
alizer'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/notifications.rb:166:in `instr
ument'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/engine.rb:651:in `load_config_initializer'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/engine.rb:616:in `block (2 levels) in <class
:Engine>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/engine.rb:615:in `each'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/engine.rb:615:in `block in <class:Engine>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:30:in `instance_exec'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:30:in `run'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:55:in `block in run_initial
izers'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:44:in `each'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:44:in `tsort_each_child'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/initializable.rb:54:in `run_initializers'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/application.rb:352:in `initialize!'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/config/environment.rb
:5:in `<top (required)>'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `requir
e'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `block
in require'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:240:in `load_d
ependency'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/activesupport-4.2.5.1/lib/active_support/dependencies.rb:274:in `requir
e'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/application.rb:328:in `require_environment!'

remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/railties-4.2.5.1/lib/rails/application.rb:457:in `block in run_tasks_bl
ocks'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/sprockets-rails-3.1.1/lib/sprockets/rails/task.rb:62:in `block (2 level
s) in define'
remote:        /tmp/build_4364280abfd75b78ccd270519b98e88a/vendor/bundle/ruby/2.
2.0/gems/rake-11.2.2/exe/rake:27:in `<top (required)>'
remote:        Tasks: TOP => environment
remote:        (See full trace by running task with --trace)
remote:  !
remote:  !     Precompiling assets failed.
remote:  !
remote:  !     Push rejected, failed to compile Ruby app.
remote:
remote:  !     Push failed
remote: Verifying deploy...
remote:
remote: !       Push rejected to instagramm1.
remote:
To https://git.heroku.com/instagramm1.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/instagramm1.git'

这是application.rb 

require File.expand_path('../boot', __FILE__)

require 'rails/all'

# Require the gems listed in Gemfile, including any gems
# you've limited to :test, :development, or :production.
Bundler.require(*Rails.groups)

module Insta
  class Application < Rails::Application
    # Settings in config/environments/* take precedence over those specified here.
    # Application configuration should go into files in config/initializers
    # -- all .rb files in that directory are automatically loaded.

    # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
    # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.
    # config.time_zone = 'Central Time (US & Canada)'

    # The default locale is :en and all translations from config/locales/*.rb,yml are auto loaded.
    # config.i18n.load_path += Dir[Rails.root.join('my', 'locales', '*.{rb,yml}').to_s]
    # config.i18n.default_locale = :de

    # Do not swallow errors in after_commit/after_rollback callbacks.
    config.active_record.raise_in_transactional_callbacks = true
    config.assets.initialize_on_precompile = false
  end
end

我已按照Heroku网站的说明进行操作。知道我错过了什么吗？

请解决此问题。

2 个答案:

答案 0 :(得分：0)

  

Gem :: LoadError：指定＆＃39; postgresql＆＃39;对于数据库适配器，但是   宝石没有加载。将gem 'pg'添加到您的Gemfile中（并确保其版本达到ActiveRecord所需的最低版本）。

在pg群组下的Gemfile添加production gem。

group :production do
  gem 'pg'
end

答案 1 :(得分：0)

如果您的数据库适配器是SQLite，则heroku不支持它。你应该添加

gem 'pg', '~> 0.18' #to your Gemfile.

您必须在下面指定database.yml。

default: &default
  adapter: postgresql
  encoding: unicode

development:
  <<: *default
  database: your_app_development

production:
   url: <%= ENV['DATABASE_URL'] %>

如果您想在生产和开发中使用不同的适配器，请删除该行

default: &default并定义适配器而不是它。

确保您已将Heroku Postgres::Database加载项添加到您的应用中。

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