在heroku上部署Rails和遇到的问题

1.Heroku 使用 PostgreSQL（发音 post-gres-cue-ell，经常简称 Postgres），所以我们要把 pg 加入生产组，Rails 才能和 PostgreSQL 通信：

group :production do
  gem 'pg', '0.15.1'
end

 

2.login heroku

$ heroku login

 

3.heroku create

$ cd your app
$ heroku login

 

4.through git push your app to heroku:

$ git push heroku master

 

5.change app name

$ heroku rename newname

 

6.first you need to precompile your app assets:

$ rake assets:precompile

 because rails will compiled all assets in one file and save it at the direction '/public/assets/' which named of a MD5 code.

 

7.second you need to open the file at '/config/environment/production.rb'  and then change config.serve_static_assets from false to true.

 

8.you need to execute step 6 before everytime you push code to heroku.

 

9.reset postgres database:

$ heroku pg:reset postgres

then input your app's name.