Question

我有一个Heroku app / RoR服务器集。尝试运行命令时

bundle exec rake db:create db:migrate

我得到LoadError: cannot load such file -- 2.1/pg_ext？

我在我的gemfile中有这个：

source 'https://rubygems.org'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.1.8'
# Use postgresql as the database for Active Record
gem 'pg'
gem 'rails_12factor', group: :production
# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.3'
# 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', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0',          group: :doc

# Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
gem 'spring',        group: :development

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

gem 'puma'

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

# Use debugger
# gem 'debugger', group: [:development, :test]

不知道我哪里错了......

我认为我错了，因为我没有正确设置SET DATABASE_URL=postgres:///$(whoami)，这个命令的格式是什么？

现在尝试了一些事后我得到了一个不同的错误：

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

我必须在哪里提供此密码？

Answer 1

我在Heroku和SQLite上使用PostgreSQL进行本地开发。如果您依赖某些Postgres特定功能，那么可能不是您的情况。否则它就足够了。

这是我的Gemfile中的一部分：

# Use sqlite3 as the database for Active Record
gem 'sqlite3', group: :development

# Deploy on Heroku
gem 'pg', group: :production
gem 'rails_12factor', group: :production

Answer 2

您已将此列为您运行的生成错误的命令。这不是有效的命令行：

bundle exec rake db:create db:migrate

这是两个不连续的动作。要创建数据库，请首先以：

开头

bundle exec rake db:create

在对数据库的后续更新中使用：

bundle exec rake db:migrate

Heroku App在Gemfile中遇到pg问题

2 个答案: