耙子中止！不知道如何构建任务 'doc:app'

Question

我应该能够使用 rake doc:app 为我的应用程序构建文档的 official documentation indicates，但是当我运行 Rails 5 中的命令时，我得到以下信息输出：

bwerth@bwerth-VirtualBox:~/rails/gep$ rake doc:app
rake aborted!
Don't know how to build task 'doc:app' (see --tasks)

(See full trace by running task with --trace)

Answer 1

此功能在版本 5 中 removed from Rails，理由如下：

...In our experience applications do not generate APIs using doc:app...If a team absolutely needs to generate application documentation for internal purposes, they can still easily write their own task...

通过在 /lib/tasks/documentation.rake 创建一个文件可以很容易地恢复功能，其中包含以下内容，取自 last version of the official task:

# /lib/tasks/documentation.rake
require 'rdoc/task'

namespace :doc do
  RDoc::Task.new("app") { |rdoc|
    rdoc.rdoc_dir = 'doc/app'
    rdoc.template = ENV['template'] if ENV['template']
    rdoc.title = ENV['title'] || 'Rails Application Documentation'
    rdoc.options << '--line-numbers'
    rdoc.options << '--charset' << 'utf-8'
    rdoc.rdoc_files.include('README.md')
    rdoc.rdoc_files.include('app/**/*.rb')
    rdoc.rdoc_files.include('lib/**/*.rb')
  }
  Rake::Task['doc:app'].comment = "Generate docs for the app -- also available doc:rails, doc:guides (options: TEMPLATE=/rdoc-template.rb, TITLE=\"Custom Title\")"
end

不过，在这一点上，从命令行运行这样的事情似乎更容易：

rdoc --main README.md --title 'My Fancy Title' README.md app/**/*.rb lib/**/*.rb

耙子中止！不知道如何构建任务 'doc:app'

Rake aborted! Don't know how to build task 'doc:app'

ruby

rake

ruby-on-rails

rdoc

ruby-on-rails-5