我的 rake 任务没有出现在 rake -T

Question

我不知道发生了什么，但我刚刚创建了一个新的 Rails 应用程序，无法让任何 rake 任务工作或显示在

$ rake -T

lib/tasks/hello.rake

namespace :hello do 
  desc "hello"
  task :you do 
    puts "hello"
  end
end

$ rake -T

它没有出现在那里

$ rake hello:you

耙子中止！ 不知道如何构建任务“hello:you”（请参阅--tasks）

宝石文件

source 'https://rubygems.org'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.2.2'
# Use sqlite3 as the database for Active Record
gem 'sqlite3'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.1.0'
# See https://github.com/rails/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

gem 'carrierwave', github: 'carrierwaveuploader/carrierwave'
gem 'mini_magick',             '3.8.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Unicorn as the app server
# gem 'unicorn'

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

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug'
end

group :development do
  # Access an IRB console on exception pages or by using <%= console %> in views
  gem 'web-console', '~> 2.0'

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

Answer 1

可能您为任务指定了

.rb

扩展名而不是

.rake

Answer 2

如果您想要所有 rake 任务的真正完整列表，您需要运行

rake -T -A

。

Answer 3

我遇到了这个问题，但这是由于我没有提供我的任务的描述。当我在

desc 'Hello World'

块上方添加

task

后，任务就会显示在列表中。

Answer 4

我的解决方案是我的目录不正确。我在

Rails.root/app/lib/tasks

下创建了自定义任务，而它本来应该是

Rails.root/lib/tasks

。

仅在按照

Rails 指南

运行命令 bin/rails generate task 后才意识到这一点。

Answer 5

我最终创建了一个默认的 Rakefile：

# Add your own tasks in files placed in lib/tasks ending in .rake,
# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.

require_relative "config/application"

Rails.application.load_tasks

此后

rake -T

似乎返回了我在

lib/tasks

下定义的任务

另一个可能类似的问题：Rake -T 无法识别任务