如何通过capistrano 3运行自定义rake任务？ [英] How to run custom rake task via capistrano 3?

问题描述

我可以通过capistrano在远程服务器上运行rake命令。

which way, i can run rake commands via capistrano on remote server.

例如，我有一个 lib / task / reparse.rake 某些方法

for example i have a lib/task/reparse.rake with some methods

desc "it's take csv file, makes some changes and fill db with this info"
task :example1 => :environment do
  require 'csv'
  rows_to_insert = []
  # some actions
  # ...
end

在本地服务器上都很好-我只是运行 rake reparse：example1
并且它的工作（正确填充数据库）。
所以问题是-部署后如何在真实主机上运行此命令？

on local server all is fine - i just run rake reparse:example1 and it's work(fill db correctly). so question is - how can i run this command on real hosting, after deploy?

我使用rails 4.1 + capistrano 3。

i'am using rails 4.1 + capistrano 3.

PS网站上的示例对我不起作用
我如何从Capistrano运行rake任务？

P.S. examples from site not work for me How do I run a rake task from Capistrano?

如果我尝试 cap production rake：invoke task = reparse：land
失败，原因是：

if i try cap production rake:invoke task=reparse:land it fails with:

cap aborted!
Don't know how to build task 'rake:invoke'

---

一些修复

---

some fixes

namespace :somenamespace do
  task :runrake do  
    on roles(:all), in: :sequence, wait: 5 do      
      within release_path do
        execute :rake, ENV['task'], "RAILS_ENV=production"
      end 
    end
  end
end

通过

cap production somenamespace:runrake task=custom_task_file:custom_method1

推荐答案

基于 capistrano / rails gem： https://github.com/capistrano/rails/blob/master/lib/capistrano/ task / migrations.rake

namespace :somenamespace do
  task :runrake do
    on roles(:all) do
      within release_path do
        with rails_env: fetch(:rails_env) do
          execute :rake, ask :task
        end
      end 
    end
  end
end

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