问题描述
我一直在尝试运行 rake db:migrate 命令，但它不起作用.我卸载并安装了 gem，但没有运气.我在某处读到 o.9 不稳定，而 0.8.7 还可以.我试过了，但我也有错误..
I have been trying to run the rake db:migrate command but it ain't working. I uninstalled and installed the gem but no luck. I read somewhere the o.9 wasn't stable and that 0.8.7 was ok. I tried it but I got an error also..
现在的错误是
Fayimora-Femi-Baloguns-MacBook-Pro:sample_app fayimora$ bundle exec rake db:migrate
/Library/Ruby/Gems/1.8/gems/bundler-1.0.15/lib/bundler/runtime.rb:136: warning: Insecure world writable dir /usr/local in PATH, mode 040777
/Library/Ruby/Gems/1.8/gems/bundler-1.0.15/lib/bundler/runtime.rb:136: warning: Insecure world writable dir /usr/local in PATH, mode 040777
(in /Users/fayimora/Sites/rails_projects/sample_app)
DEPRECATION WARNING: config.generators in Rails::Railtie is deprecated. Please use config.app_generators instead. (called from /Users/fayimora/Sites/rails_projects/sample_app/config/application.rb:12)
DEPRECATION WARNING: config.generators in Rails::Railtie is deprecated. Please use config.app_generators instead. (called from /Users/fayimora/Sites/rails_projects/sample_app/config/application.rb:12)
rake aborted!
undefined method `prerequisites' for nil:NilClass
/Users/fayimora/Sites/rails_projects/sample_app/Rakefile:7
(See full trace by running task with --trace)
我的宝石清单是
Fayimora-Femi-Baloguns-MacBook-Pro:sample_app fayimora$ bundle
Using rake (0.8.7)
Using ZenTest (4.5.0)
Using multi_json (1.0.3)
Using activesupport (3.1.0.rc4)
Using bcrypt-ruby (2.1.4)
Using builder (3.0.0)
Using i18n (0.6.0)
Using activemodel (3.1.0.rc4)
Using erubis (2.7.0)
Using rack (1.3.1)
Using rack-cache (1.0.2)
Using rack-mount (0.8.1)
Using rack-test (0.6.0)
Using hike (1.1.0)
Using tilt (1.3.2)
Using sprockets (2.0.0.beta.10)
Using tzinfo (0.3.29)
Using actionpack (3.1.0.rc4)
Using mime-types (1.16)
Using polyglot (0.3.1)
Using treetop (1.4.9)
Using mail (2.3.0)
Using actionmailer (3.1.0.rc4)
Using arel (2.1.3)
Using activerecord (3.1.0.rc4)
Using activeresource (3.1.0.rc4)
Using autotest (4.4.6)
Using sys-uname (0.8.5)
Using autotest-fsevent (0.2.4)
Using autotest-growl (0.2.9)
Using autotest-rails-pure (4.1.2)
Using bundler (1.0.15)
Using coffee-script-source (1.1.1)
Using execjs (1.2.0)
Using coffee-script (2.2.0)
Using diff-lcs (1.1.2)
Using rack-ssl (1.3.2)
Using rdoc (3.8)
Using thor (0.14.6)
Using railties (3.1.0.rc4)
Using jquery-rails (1.0.12)
Using json (1.5.3)
Using nokogiri (1.5.0)
Using rails (3.1.0.rc4)
Using rspec-core (2.0.0.beta.18)
Using rspec-expectations (2.0.0.beta.18)
Using rspec-mocks (2.0.0.beta.18)
Using rspec (2.0.0.beta.18)
Using webrat (0.7.3)
Using rspec-rails (2.0.0.beta.18)
Using sass (3.1.4)
Using sass-rails (3.1.0.rc.4)
Using spork (0.9.0.rc8)
Using sqlite3 (1.3.3)
Using uglifier (1.0.0)
Rakefile 的内容
Contents of Rakefile
#!/usr/bin/env rake
# 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 'rake/dsl_definition'
require File.expand_path('../config/application', __FILE__)
SampleApp::Application.load_tasks
请提供任何帮助.学习 Rails 真的很难.
Please any help would be apprecible. Been having a real hard time learning rails.
推荐答案
修复了 Rake 0.9.2 的错误.尝试使用 Rake 0.9.2，将其添加到 Gemfile 并运行
The bug with Rake 0.9.2 is fixed. Try using Rake 0.9.2 by adding it to your Gemfile and run
捆绑更新耙.
除了试验或检查您的 gem 的兼容性之外，我不会使用 Rails 3.1 RC.Rails 3.0.9 非常稳定且得到广泛支持.
I wouldn't use Rails 3.1 RCs besides experimenting or checking your gems for compatibility. Rails 3.0.9 is pretty stable and widely supported.
https://github.com/rails/rails/issues/1197
该问题与 gem 与 Rails 3.1 不兼容有关.尝试从您的 Gemfile 中删除 rspec，bundle install，然后运行您的 rake 任务.
The problem is related to a gem not being compatible with Rails 3.1. Try to remove rspec from your Gemfile, bundle install, and run your rake tasks.
这篇关于Rails:帮助解决 rake 中止错误！的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！