Heroku pg问题

Question

我对rails相当陌生。我试图遵循Michael的Rails教程，并且遇到了部署到Heroku的问题。我成功地部署了一次，但是现在我已经完成了另一节，我再次部署遇到了困难。我已经包括了我的终端输入和结果，我的database.yml和我的Gemfile。提前感谢您的帮助！

sample_app: (master)$ git push heroku master
Fetching repository, done.
Counting objects: 58, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (40/40), done.
Writing objects: 100% (42/42), 5.95 KiB | 0 bytes/s, done.
Total 42 (delta 13), reused 0 (delta 0)

-----> Ruby app detected
-----> Compiling Ruby/Rails
-----> Using Ruby version: ruby-2.1.2
-----> Installing dependencies using 1.6.3
       Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
       Using rake 10.3.2
       Using minitest 5.4.2
       Using i18n 0.7.0.beta1
       Using thread_safe 0.3.4
       Using builder 3.2.2
       Using erubis 2.7.0
       Using mini_portile 0.6.0
       Using rack 1.6.0.beta
       Using mime-types 2.4.1
       Using arel 6.0.0.beta1
       Using bcrypt 3.1.7
       Using sass 3.4.5
       Using will_paginate 3.0.7
       Using coffee-script-source 1.8.0
       Using execjs 2.2.1
       Using thor 0.19.1
       Using excon 0.40.0
       Using json 1.8.1
       Using formatador 0.2.5
       Using net-ssh 2.9.1
       Using multi_json 1.10.1
       Using inflecto 0.0.2
       Using ipaddress 0.8.0
       Using subexec 0.2.3
       Using hike 1.2.3
       Using bundler 1.6.3
       Using tilt 1.4.1
       Using tzinfo 1.2.2
       Using faker 1.4.2
       Using nokogiri 1.6.3.1
       Using mail 2.6.1
       Using rack-test 0.6.2
       Using bootstrap-will_paginate 0.0.10
       Using coffee-script 2.3.0
       Using net-scp 1.2.1
       Using bootstrap-sass 3.2.0.0
       Using fog-json 1.0.0
       Using mini_magick 3.8.0
       Using sprockets 2.12.2
       Using activesupport 4.2.0.beta2
       Using rdoc 4.1.2
       Using uglifier 2.5.3
       Using fog-core 1.24.0
       Using globalid 0.3.0
       Using activemodel 4.2.0.beta2
       Using jbuilder 2.1.3
       Using loofah 2.0.1
       Using fog-brightbox 0.5.1
       Using fog-softlayer 0.3.20
       Using activejob 4.2.0.beta2
       Using sdoc 0.4.0
       Using activerecord 4.2.0.beta2
       Using rails-deprecated_sanitizer 1.0.3
       Using rails-html-sanitizer 1.0.1
       Using fog 1.23.0
       Using rails-dom-testing 1.0.3
       Using carrierwave 0.10.0
       Using actionview 4.2.0.beta2
       Using actionpack 4.2.0.beta2
       Using actionmailer 4.2.0.beta2
       Using sprockets-rails 3.0.0.beta1
       Using railties 4.2.0.beta2
       Using coffee-rails 4.0.1
       Using sass-rails 5.0.0.beta1
       Using turbolinks 2.3.0
       Using jquery-rails 3.1.2
       Using rails 4.2.0.beta2
       Your bundle is complete!
       Gems in the groups development and test were not installed.
       It was installed into ./vendor/bundle
       Bundle completed (0.83s)
       Cleaning up the bundler cache.
       Removing rails_12factor (0.0.2)
       Removing pg (0.17.1)
       Removing raindrops (0.13.0)
       Removing rails_stdout_logging (0.0.3)
       Removing unicorn (4.8.3)
       Removing rails_serve_static_assets (0.0.2)
       Removing kgio (2.9.2)
-----> Preparing app for Rails asset pipeline
       Running: rake assets:precompile
       rake aborted!
       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).
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activerecord-4.2.0.beta2/lib/active_record/connection_adapters/connection_specification.rb:176:in `rescue in spec'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activerecord-4.2.0.beta2/lib/active_record/connection_adapters/connection_specification.rb:173:in `spec'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activerecord-4.2.0.beta2/lib/active_record/connection_handling.rb:50:in `establish_connection'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activerecord-4.2.0.beta2/lib/active_record/railtie.rb:122:in `block (2 levels) in <class:Railtie>'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/lazy_load_hooks.rb:28:in `block in on_load'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/lazy_load_hooks.rb:27:in `each'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/lazy_load_hooks.rb:27:in `on_load'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activerecord-4.2.0.beta2/lib/active_record/railtie.rb:118:in `block in <class:Railtie>'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/initializable.rb:30:in `instance_exec'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/initializable.rb:30:in `run'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/initializable.rb:55:in `block in run_initializers'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/initializable.rb:54:in `run_initializers'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/application.rb:349:in `initialize!'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/config/environment.rb:5:in `<top (required)>'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:248:in `require'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:248:in `block in require'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:233:in `load_dependency'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:248:in `require'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/application.rb:325:in `require_environment!'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/application.rb:438:in `block in run_tasks_blocks'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/sprockets-rails-3.0.0.beta1/lib/sprockets/rails/task.rb:64:in `block (2 levels) in define'
       Gem::LoadError: pg is not part of the bundle. Add it to Gemfile.
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/bundler-1.6.3/lib/bundler/rubygems_integration.rb:252:in `block in replace_gem'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activerecord-4.2.0.beta2/lib/active_record/connection_adapters/postgresql_adapter.rb:16:in `<top (required)>'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:248:in `require'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:248:in `block in require'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:233:in `load_dependency'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:248:in `require'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activerecord-4.2.0.beta2/lib/active_record/connection_adapters/connection_specification.rb:174:in `spec'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activerecord-4.2.0.beta2/lib/active_record/connection_handling.rb:50:in `establish_connection'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activerecord-4.2.0.beta2/lib/active_record/railtie.rb:122:in `block (2 levels) in <class:Railtie>'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/lazy_load_hooks.rb:38:in `instance_eval'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/lazy_load_hooks.rb:38:in `execute_hook'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/lazy_load_hooks.rb:28:in `block in on_load'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/lazy_load_hooks.rb:27:in `each'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/lazy_load_hooks.rb:27:in `on_load'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activerecord-4.2.0.beta2/lib/active_record/railtie.rb:118:in `block in <class:Railtie>'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/initializable.rb:30:in `instance_exec'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/initializable.rb:30:in `run'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/initializable.rb:55:in `block in run_initializers'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/initializable.rb:54:in `run_initializers'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/application.rb:349:in `initialize!'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/config/environment.rb:5:in `<top (required)>'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:248:in `require'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:248:in `block in require'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:233:in `load_dependency'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/activesupport-4.2.0.beta2/lib/active_support/dependencies.rb:248:in `require'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/application.rb:325:in `require_environment!'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/railties-4.2.0.beta2/lib/rails/application.rb:438:in `block in run_tasks_blocks'
       /tmp/build_a852f630-86fd-4560-a8ec-95e7343a25ee/vendor/bundle/ruby/2.1.0/gems/sprockets-rails-3.0.0.beta1/lib/sprockets/rails/task.rb:64:in `block (2 levels) in define'
       Tasks: TOP => environment
       (See full trace by running task with --trace)
 !
 !     Precompiling assets failed.
 !

 !     Push rejected, failed to compile Ruby app

To git@heroku.com:someapp.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git@heroku.com:someapp.git'

Gemfile

source 'https://rubygems.org'
ruby   '2.1.2'

gem 'rails',                   '4.2.0.beta2'
gem 'bcrypt',                  '3.1.7'
gem 'faker',                   '1.4.2'
gem 'carrierwave',             '0.10.0'
gem 'mini_magick',             '3.8.0'
gem 'fog',                     '1.23.0'
gem 'will_paginate',           '3.0.7'
gem 'bootstrap-will_paginate', '0.0.10'
gem 'bootstrap-sass',          '3.2.0.0'
gem 'sass-rails',              '5.0.0.beta1'
gem 'uglifier',                '2.5.3'
gem 'coffee-rails',            '4.0.1'
gem 'jquery-rails',            '3.1.2'
gem 'turbolinks',              '2.3.0'
gem 'jbuilder',                '2.1.3'
gem 'rails-html-sanitizer',    '1.0.1'
gem 'sdoc',                    '0.4.0', group: :doc

group :development, :test do
  gem 'sqlite3',     '1.3.9'
  gem 'byebug',      '3.4.0'
  gem 'web-console', '2.0.0.beta3'
  gem 'spring',      '1.1.3'
end

group :test do
  gem 'minitest-reporters', '1.0.5'
  gem 'mini_backtrace',     '0.1.3'
  gem 'guard-minitest',     '2.3.1'
end

group :production do
  gem 'pg',             '0.17.1'
  gem 'rails_12factor', '0.0.2'
  gem 'unicorn',        '4.8.3'
end

Database.yml

# SQLite version 3.x
#   gem install sqlite3
#
#   Ensure the SQLite 3 gem is defined in your Gemfile
#   gem 'sqlite3'
#
default: &default
  adapter: sqlite3
  pool: 5
  timeout: 5000

development:
  <<: *default
  database: db/development.sqlite3

# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test:
  <<: *default
  database: db/test.sqlite3

production:
  <<: *default
  database: db/production.sqlite3

Answer 1

首先更改您的database.yml。因为在生产过程中，您使用的是postgres，您需要在database.yml中提到这一点。

在生产区

production:
  adapter: postgresql
  encoding: unicode 
  database: database_name

也可以重新安装并将and文件和gemfile.lock推送到heroku。