标签: rake

当我尝试这样做时,bundler update我收到此错误:

.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/dependency.rb:247:in
`to_specs': Could not find bundler (>= 0) amongst
[rake-0.8.7, rake-0.8.7, rubygems-update-1.8.4] (Gem::LoadError)

我是Ruby的新手,有人可以告诉我是什么原因造成的吗？安装了耙0.8.7.

我已经有一个deploy.rb可以在我的生产服务器上部署我的应用程序.

我的应用程序包含一个自定义rake任务(lib/tasks目录中的.rake文件).

我想创建一个能够远程运行该rake任务的上限任务.

我越来越类似于那些错误的 这些 问题,除了我的是上发生的Heroku:

2011-05-30T09:03:29+00:00 heroku[worker.1]: Starting process with command: `rake jobs:work`
2011-05-30T09:03:30+00:00 app[worker.1]: (in /app)
2011-05-30T09:03:30+00:00 heroku[worker.1]: State changed from starting to up
2011-05-30T09:03:33+00:00 app[worker.1]: rake aborted!
2011-05-30T09:03:33+00:00 app[worker.1]: uninitialized constant Rake::DSL
2011-05-30T09:03:33+00:00 app[worker.1]: /app/.bundle/gems/ruby/1.9.1/gems/rake-0.9.0/lib/rake/tasklib.rb:8:in `<class:TaskLib>'

这些问题的答案似乎是要指定,gem 'rake', '0.8.7'因为0.9版本会导致问题.

当我尝试添加gem 'rake', '0.8.7'到我的gemfile并推送到Heroku时,我收到此错误:

Unresolved dependencies detected; Installing...
You have modified your Gemfile in development but did not check
the resulting snapshot (Gemfile.lock) into version control

You have added to the Gemfile:
* rake …

安装设备后,我得到了这个.

class DeviseCreateUsers < ActiveRecord::Migration
  def self.up
    create_table(:users) do |t|
      t.database_authenticatable :null => false
      t.recoverable
      t.rememberable
      t.trackable

      # t.encryptable
      # t.confirmable
      # t.lockable :lock_strategy => :failed_attempts, :unlock_strategy => :both
      # t.token_authenticatable


      t.timestamps
    end

    add_index :users, :email,                :unique => true
    add_index :users, :reset_password_token, :unique => true
    # add_index :users, :confirmation_token,   :unique => true
    # add_index :users, :unlock_token,         :unique => true
    # add_index :users, :authentication_token, :unique => true
  end

  def self.down
    drop_table :users
  end
end

现在,如果我执行rake db:migrate,将创建users表.

如何恢复此迁移,即如何再次使用rake删除users表？

我试图在我的rails应用程序中运行一大堆迁移.我怎样才能做到这一点？我不希望在它之前或之后运行任何迁移.谢谢.

我正在编写Ruby on Rails 3教程书并在命令行上输入以下内容:

rake db:migrate

产生了以下警告.

WARNING: Global access to Rake DSL methods is deprecated.  Please Include
    ...  Rake::DSL into classes and modules which use the Rake DSL methods.

WARNING: DSL method DemoApp::Application#task called at /Users/imac/.rvm/gems/ruby-1.9.2-p180@rails3tutorial/gems/railties-3.0.7/lib/rails/application.rb:215:in `initialize_tasks'

我不知道该怎么做或如何使用它.我不知道Rake的任何其他命令.

我该如何解决这个问题？

当我rake db:seed在我的Rails应用程序中运行时,我收到此错误:

US-ASCII中的无效字节序列(参数错误)

我只是添加science_majors到我的种子文件,现在当我运行rake db:seed它给我这个错误:

无效的字节序列错误

为什么会这样,我该如何解决？

seed.rb的一部分

@college = College.find_or_create_by_name!('University of Pittsburgh')
if @college.update_attributes(
  url: 'university-of-pittsburgh',
  public: 'Public',
  years: '4-year',
  category: 'National University',
  calendar: 'Semester',
  location: 'Pittsburgh, PA',
  setting: 'Large City (250-500k)',
  retention: '90',
  majors: 'business/marketing: 15%|social sciences: 14%|health professions: 11%|english: 10%|engineering: 9%|psychology: 8%|biology: 7%|history: 5%',
  scholarships_link: 'http://www.oafa.pitt.edu/universityschlrs.aspx',
  map: '<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="https://maps.google.com/maps?f=q&amp;source=s_q&amp;hl=en&amp;geocode=&amp;q=university+of+pittsburgh&amp;aq=&amp;sll=40.444261,-79.970448&amp;sspn=0.142165,0.251656&amp;ie=UTF8&amp;hq=university+of+pittsburgh&amp;t=m&amp;ll=40.443486,-79.958245&amp;spn=0.010798,0.021038&amp;output=embed"></iframe><br /><small><a href="https://maps.google.com/maps?f=q&amp;source=embed&amp;hl=en&amp;geocode=&amp;q=university+of+pittsburgh&amp;aq=&amp;sll=40.431368,-79.9805&amp;sspn=0.142165,0.251656&amp;ie=UTF8&amp;hq=university+of+pittsburgh&amp;t=m&amp;ll=40.443486,-79.958245&amp;spn=0.010798,0.021038" style="color:#0000FF;text-align:left">View Larger Map</a></small>',
  street_view: '<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" …

给出如下内容:

namespace :my_tasks do
  task :foo do
    do_something
  end

  task :bar do
    do_something_else
  end

  task :all => [:foo, :bar]
end

我如何:all成为默认任务,以便运行rake my_tasks会调用它(而不是必须调用rake my_tasks:all)？

如何在终端/控制台中运行此rake文件？

我在lib/tasks中的statistik.rake

desc "Importer statistikker"
namespace :reklamer do
  task :iqmedier => :environment do
    ...
  end
  task :euroads => :environment do
    ...
  end
  task :mikkelsen => :environment do
    ...
  end
  task :orville => :environment do
    ...
  end
end

我想从控制台调用我的rake任务.它可行吗？如果有,怎么办？

我在控制台上尝试了这个:

require 'rake'
Rake::Task['my_task'].invoke

但它给了我这个错误:

RuntimeError: Don't know how to build task

就像耙子找不到任务一样.

任何帮助,将不胜感激.

谢谢

编辑:我正在使用rails 2.3.5