ruby-on-rails – rake aborted！ PG :: ConnectionBad：fe_sendauth：没有提供密码任务：TOP => db：migrate(通过使用–trace运行任务来查看完整跟踪)

尝试rake db：migrate时,我得到以下内容

rake aborted!
PG::ConnectionBad: fe_sendauth: no password supplied

Tasks: TOP => db:migrate
(See full trace by running task with --trace)

转到我的localhost时,我也收到类似的消息

fe_sendauth: no password supplied

我的rails服务器和rails控制台也不起作用

我一直在尝试一些事情,这就是我的gemfile目前的样子：

source 'https://rubygems.org'
ruby '2.0.0'

# Bundle edge Rails instead: gem 'rails',github: 'rails/rails'
gem 'rails','4.0.3'

# Use SCSS for stylesheets
gem 'sass-rails','~> 4.0.0'

# Use Uglifier as compressor for JavaScript assets
gem 'uglifier','>= 1.3.0'

# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails','~> 4.0.0'

# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer',platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'

# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'

# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder','~> 1.2'
gem 'devise'


gem 'pg'

group :doc do
  # bundle exec rake doc:rails generates the API under doc/api.
  gem 'sdoc',require: false
end


group :production do
  gem 'rails_12factor'
end

和我的database.yml

development:
  adapter: postgresql
  encoding: unicode
  database: myapp_development
  pool: 5
  username: myapp
  password:

test:
  adapter: postgresql
  encoding: unicode
  database: myapp_test
  pool: 5
  username: myapp
  password:

production:
  adapter: postgresql
  encoding: unicode
  database: myapp_production
  pool: 5
  username: myapp
  password:

问题是什么？似乎要在本地访问我的postgres表我需要某种密码？通过Heroku运行我的应用程序正常.所以我只是打开Heroku,我可以提交新的链接和帖子,因为我的应用程序是有意的,但它不会在本地工作.

解决方法

对于本地计算机,在database.yml的测试和开发部分下,您应该将用户名更改为您登录的用户名. rails生成器使其与应用程序名称相同 – 这不起作用.对于生产而言,它无关紧要,因为它在Heroku上运行,并且在部署时会自动更改该设置.