Capistrano:显式调用`deploy:assets:precompile`时未编译的资产

Question

我可以在本地Rails 4.1项目中编译我的资产,如下所示:

$ RAILS_ENV=staging bin/rake assets:precompile

I, [2015-03-26T17:23:21.632726 #26321]  INFO -- : Writing /MyProject/public/assets/active_admin-a46314b7dc1a06e662695c2093e33d96.js
I, [2015-03-26T17:23:21.748271 #26321]  INFO -- : Writing /MyProject/public/assets/application-adc2c7c08b35fae05d8bfc73d1696dea.js
I, [2015-03-26T17:23:21.833131 #26321]  INFO -- : Writing /MyProject/public/assets/active_admin-36d00173ec2474695cd54a330636bac9.css
I, [2015-03-26T17:23:21.851637 #26321]  INFO -- : Writing /MyProject/public/assets/application-0930e157132302bc8b8666143a832af2.css
I, [2015-03-26T17:23:21.861676 #26321]  INFO -- : Writing /MyProject/public/assets/debug-aeffd81aa2ee2b35a0d779b9335c9749.css

也可以直接在服务器上使用rake创建资产:

user@server$ RAILS_ENV=staging bundle exec rake assets:precompile

I, [2015-03-26T17:40:11.761707 #30743]  INFO -- : Writing /var/www/my_project/releases/20150326161842/public/assets/active_admin-a46314b7dc1a06e662695c2093e33d96.js
I, [2015-03-26T17:40:11.806881 #30743]  INFO -- : Writing /var/www/my_project/releases/20150326161842/public/assets/application-adc2c7c08b35fae05d8bfc73d1696dea.js
I, [2015-03-26T17:40:11.847215 #30743]  INFO -- : Writing /var/www/my_project/releases/20150326161842/public/assets/active_admin-36d00173ec2474695cd54a330636bac9.css

但是,当我想在远程服务器上执行相同操作时,则不会创建任何资产.

这是:debug我通过capistrano运行命令时的输出:

$ cap staging deploy:assets:precompile -t

** Invoke staging (first_time)
** Execute staging
** Invoke load:defaults (first_time)
** Execute load:defaults
** Invoke rbenv:validate (first_time)
** Execute rbenv:validate
DEBUG [92cdd4bf] Running /usr/bin/env [ -d ~/.rbenv/versions/2.1.2 ] as user@server.com
DEBUG [92cdd4bf] Command: [ -d ~/.rbenv/versions/2.1.2 ]
DEBUG [92cdd4bf] Finished in 0.421 seconds with exit status 0 (successful).
** Invoke rbenv:map_bins (first_time)
** Execute rbenv:map_bins
** Invoke bundler:map_bins (first_time)
** Execute bundler:map_bins
** Invoke deploy:set_rails_env (first_time)
** Execute deploy:set_rails_env
** Invoke deploy:set_rails_env 
** Invoke deploy:assets:precompile (first_time)
** Execute deploy:assets:precompile

我Capfile包含了require 'capistrano/rails/assets'通过require 'capistrano/rails'.

我staging.rb包含以下指令:

# Do not fallback to assets pipeline if a precompiled asset is missed.
config.assets.compile = false
config.assets.digest = true

为什么Capistrano不会产生资产？

Answer 1

从这里:

set :assets_roles, [:web, :app]            # Defaults to [:web]

我认为您的服务器没有web角色(或者您分配app角色).因此,尝试assets_roles如上所述指定变量或更改服务器的角色.