我为我正在构建的项目设置了一系列自定义 rake 任务,这些任务按位置命名间隔。这些任务可以通过运行 rake tasks
来查看。从控制台。
desc 'List all available placewise rake tasks for this application.'
task :tasks do
result = %x[rake -T | sed -n '/placewise:/{/grep/!p;}']
result.each_line do |task|
puts task
end
end
所有这些任务都存储在
lib/tasks/placewise
中。并像这样构建:namespace :placewise do
namespace :db do
desc "Drop and create the current database, the argument [env] = environment."
task :recreate, [:env] do |t,args|
env = environments(args.env)
msg("Dropping the #{env} database")
shell("RAILS_ENV=#{env} rake db:drop", step: "1/3")
msg("Creating the #{env} database")
shell("RAILS_ENV=#{env} rake db:create", step: "2/3")
msg("Running the #{env} database migrations")
shell("RAILS_ENV=#{env} rake db:migrate", step: "3/3")
end
end
end
例如,一个新任务可以从基本设置开始,如下所示:
namespace :placewise do
namespace :example do
desc "example"
task :example do
end
end
end
如您所见
namespace :placewise do
每次都会被复制。我想将所有自定义 rake 任务保留在同一个组中,但是,我很好奇是否有办法避免将该命名空间添加到每个 .rake
文件?干杯。
最佳答案
不幸的是,我被告知反对这种策略,在发现过程中我发现我的辅助方法没有正确设置。所以就到这里了。
我在 lib/modules
中创建了一个新的模块文件夹与新 helper_functions.rb
该目录中的文件。这是我的 helper :
模块 HelperFunctions
# ------------------------------------------------------------------------------------
# Permitted environments
# ------------------------------------------------------------------------------------
def environments(arg)
arg = arg || "development"
environments = ["development", "test", "production"]
if environments.include?(arg)
puts
msg("Environment parameter is valid")
return arg
else
error("Invalid environment parameter")
exit
end
end
# ------------------------------------------------------------------------------------
# Console message handler
# ------------------------------------------------------------------------------------
def msg(txt, periods: "yes", new_line: "yes")
txt = txt + "..." if periods == "yes"
puts "===> " + txt
puts if new_line == "yes"
end
def error(reason)
puts "**** ERROR! ABORTING: " + reason + "!"
end
# ------------------------------------------------------------------------------------
# Execute Shell Commands
# ------------------------------------------------------------------------------------
def shell(cmd, step: nil)
msg("Starting step #{step}", new_line: "no") if step.present?
if ENV['TRY']
puts "-->> " + cmd
else
sh %{#{cmd}}
end
msg("#{step} completed!", periods: "no")
end
end
然后在
Rakefile
添加:# Shared Ruby functions used in rake tasks
require File.expand_path('../lib/modules/helper_functions', __FILE__)
include HelperFunctions
Rails.application.load_tasks
# Do not add other tasks to this file, make files in the primary lib/tasks dir ending in .rake
# All placewise tasks should be under the lib/tasks/placewise folder and end in .rake
desc 'List all available placewise rake tasks for this application.'
task :tasks do
result = %x[rake -T | sed -n '/placewise:/{/grep/!p;}']
result.each_line do |task|
puts task
end
end
最后是我的
.rake
任务看起来像:namespace :placewise do
# ------------------------------------------------------------------------------------
namespace :db do
# ------------------------------------------------------------------------------------
desc "Drop and create the current database, the argument [env] = environment."
task :recreate, [:env] do |t,args|
env = HelperFunctions::environments(args.env)
HelperFunctions::msg("Dropping the #{env} database")
HelperFunctions::shell("RAILS_ENV=#{env} rake db:drop", step: "1/3")
HelperFunctions::msg("Creating the #{env} database")
HelperFunctions::shell("RAILS_ENV=#{env} rake db:create", step: "2/3")
HelperFunctions::msg("Running the #{env} database migrations")
HelperFunctions::shell("RAILS_ENV=#{env} rake db:migrate", step: "3/3")
end
# ------------------------------------------------------------------------------------
end
# ------------------------------------------------------------------------------------
end
关于ruby-on-rails - rake 任务使用命名空间耗尽命名空间,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24022217/