Ruby on Rails PG：：ConnectionBad

Question

当我运行命令时，我正在尝试部署我的应用程序

rails server -b $IP -p $PORT

提取的源码（第56行附近）：

### Convenience alias for PG::Connection.new.
def self::connect( *args )
    return PG::Connection.new( *args )
end

我的database.yml是

# SQLite version 3.x
#   gem install sqlite3
#
#   Ensure the SQLite 3 gem is defined in your Gemfile
#   gem 'sqlite3'
#
default: &default
  adapter: postgresql
  encoding: unicode
  # For details on connection pooling, see rails configuration guide
  # http://guides.rubyonrails.org/configuring.html#database-pooling
  pool: 5

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

========更新======

# SQLite version 3.x
#   gem install sqlite3
#
#   Ensure the SQLite 3 gem is defined in your Gemfile
#   gem 'sqlite3'
#
default: &default
  adapter: postgresql
  encoding: unicode
  # For details on connection pooling, see rails configuration guide
  # http://guides.rubyonrails.org/configuring.html#database-pooling
  pool: 5

development:
  adapter: postgresql
  encoding: unicode
  database: sale_development
  pool: 5

test: &test
  adapter: postgresql
  encoding: unicode
  database: sale_test
  pool: 5

production:
  adapter: postgresql
  encoding: unicode
  database: sale_production
  pool: 5
  host: localhost
  username: sale
  password: <%= ENV['SALE_DATABASE_PASSWORD'] %>

 source 'https://rubygems.org'

 git_source(:github) do |repo_name|
   repo_name = "#{repo_name}/#{repo_name}" unless repo_name.include?("/")
   "https://github.com/#{repo_name}.git"
 end


 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.1.1'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3'
 gem 'pg'
 # Use Puma as the app server
 gem 'puma', '~> 3.7'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
 # Use Uglifier as compressor for JavaScript assets
 gem 'uglifier', '>= 1.3.0'
 # See https://github.com/rails/execjs#readme for more supported runtimes
 # gem 'therubyracer', platforms: :ruby

 # Use CoffeeScript for .coffee assets and views
 gem 'coffee-rails', '~> 4.2'
 # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
 gem 'turbolinks', '~> 5'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.5'
# Use Redis adapter to run Action Cable in production
# gem 'redis', '~> 3.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'
gem 'bootstrap-sass'
gem "paperclip", "~> 5.0.0"
gem 'devise', '~> 4.3'
gem 'will_paginate', '~> 3.0'


# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
end

group :development do
   # Access an IRB console on exception pages or by using <%= console %> anywhere in the code.
  gem 'web-console', '>= 3.3.0'
  gem 'listen', '>= 3.0.5', '< 3.2'
  # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
  gem 'spring'
  gem 'spring-watcher-listen', '~> 2.0.0'
end

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

Answer 1

我认为它显示了与sqlite3的连接，如果它是生产的，那么你必须输入用户名和密码

如果使用postgresql,这是供您参考的

development:
  adapter: postgresql
  encoding: unicode
  database: your_database_name
  pool: 5

test: &test
  adapter: postgresql
  encoding: unicode
  database: your_database_name_test
  pool: 5

production:
  adapter: postgresql
  encoding: unicode
  database: your_database_name_production
  pool: 5
  host: localhost
  username: some_user_name
  password: some_password