我已在我的本地计算机上安装了diaspora rails应用程序https://github.com/diaspora/diaspora。然后我安装了Railroads图生成器http://railroad.rubyforge.org/#download
按照网站上的说明，我构建了一个rake任务来运行它，但是当我运行它时似乎得到两个单独的错误。
第一个错误是没有dot命令：
sh: dot: command not found
在没有rake的情况下运行时我得到的第二个错误：
Seans-MacBook-Pro:diaspora sean$ railroad -o models.dot -M
/Users/sean/.rvm/gems/ruby-1.9.3-p194@diaspora/gems/railroad- 0.5.0/lib/railroad/app_diagram.rb:54:in `disable_stdout': uninitialized constant AppDiagram::PLATFORM (NameError)
当我跑rake时：
Seans-MacBook-Pro:diaspora sean$ rake doc:diagrams
WARNING: Nokogiri was built against LibXML version 2.7.3, but has dynamically loaded 2.7.8
railroad -i -l -a -m -M | dot -Tsvg | sed 's/font-size:14.00/font-size:11.00/g' > doc/models.svg
sh: dot: command not found
/Users/sean/.rvm/gems/ruby-1.9.3-p194@diaspora/gems/railroad- 0.5.0/lib/railroad/app_diagram.rb:54:in `disable_stdout': uninitialized constant AppDiagram::PLATFORM (NameError)
from /Users/sean/.rvm/gems/ruby-1.9.3-p194@diaspora/gems/railroad- 0.5.0/lib/railroad/app_diagram.rb:72:in `load_environment'
from /Users/sean/.rvm/gems/ruby-1.9.3-p194@diaspora/gems/railroad-0.5.0/lib/railroad/app_diagram.rb:18:in `initialize'
from /Users/sean/.rvm/gems/ruby-1.9.3-p194@diaspora/gems/railroad-0.5.0/lib/railroad/models_diagram.rb:14:in `initialize'
from /Users/sean/.rvm/gems/ruby-1.9.3-p194@diaspora/gems/railroad-0.5.0/bin/railroad:36:in `new'
from /Users/sean/.rvm/gems/ruby-1.9.3-p194@diaspora/gems/railroad-0.5.0/bin/railroad:36:in `<top (required)>'
我还根据此链接修改了railroad / app_diagram.rb http://rubyforge.org/tracker/index.php?func=detail&aid=26418&group_id=3383&atid=12998
现在我收到了这个错误：
Seans-MacBook-Pro:diaspora sean$ rake doc:diagrams
WARNING: Nokogiri was built against LibXML version 2.7.3, but has dynamically loaded 2.7.8
railroad -i -l -a -m -M | dot -Tsvg | sed 's/font-size:14.00/font-size:11.00/g' > doc/models.svg
dyld: Library not loaded: /usr/lib/libltdl.7.dylib
Referenced from: /usr/local/bin/dot
Reason: image not found
Error loading application environment.
(Are you running railroad on the aplication's root directory?)
/Users/sean/.rvm/gems/ruby-1.9.3-p194@diaspora/gems/railroad-0.5.0/lib/railroad/app_diagram.rb:73:in `require': cannot load such file -- config/environment (LoadError)
from /Users/sean/.rvm/gems/ruby-1.9.3-p194@diaspora/gems/railroad- 0.5.0/lib/railroad/app_diagram.rb:73:in `load_environment'
from /Users/sean/.rvm/gems/ruby-1.9.3-p194@diaspo
我从项目根运行，文件存在。我也尝试将.rb添加到app_diagram.rb文件中的行但没有更改。
Seans-MacBook-Pro:diaspora sean$ pwd
/Users/sean/Dropbox/rails/diaspora
Seans-MacBook-Pro:diaspora sean$ head -73 /Users/sean/.rvm/gems/ruby-1.9.3- p194@diaspora/gems/railroad-0.5.0/lib/railroad/app_diagram.rb
| tail -1
require "config/environment"
Seans-MacBook-Pro:diaspora sean$ ls -l config/environment.rb
-rw-r--r-- 1 sean staff 1481 Jul 19 14:25 config/environment.rb
答案 0 :(得分：4)
这是您需要的程序：http://www.graphviz.org/Download_macos.php。 Dot是绘制图形所需的程序。
答案 1 :(得分：0)