我正在学习rails 4.1.5
我得到了这个错误:
2.1.1 :008 > Article
NameError: uninitialized constant Article::ImageUploader
from /Volumes/disk0s4/www/rails/blog/app/models/article.rb:4:in `<class:Article>'
from /Volumes/disk0s4/www/rails/blog/app/models/article.rb:1:in `<top (required)>'
from (irb):8
from /Users/didin/.rvm/gems/ruby-2.1.1/gems/railties-4.1.5/lib/rails/commands/console.rb:90:in `start'
from /Users/didin/.rvm/gems/ruby-2.1.1/gems/railties-4.1.5/lib/rails/commands/console.rb:9:in `start'
from /Users/didin/.rvm/gems/ruby-2.1.1/gems/railties-4.1.5/lib/rails/commands/commands_tasks.rb:69:in `console'
from /Users/didin/.rvm/gems/ruby-2.1.1/gems/railties-4.1.5/lib/rails/commands/commands_tasks.rb:40:in `run_command!'
from /Users/didin/.rvm/gems/ruby-2.1.1/gems/railties-4.1.5/lib/rails/commands.rb:17:in `<top (required)>'
from /Volumes/disk0s4/www/rails/blog/bin/rails:8:in `<top (required)>'
from /Users/didin/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /Users/didin/.rvm/rubies/ruby-2.1.1/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from -e:1:in `<main>'
我的文件: article.rb
class Article < ActiveRecord::Base
validates_presence_of :title, :body
belongs_to :user
mount_uploader :image, ImageUploader
end
运行rails console
时出现错误
当我在控制台上写一个单词‘文章’时,它会抛出上面的错误,但当这行mount_uploader :image, ImageUploader
在文章.rb的文件中被删除时,它工作得很好。
当恢复该行时,错误再次出现。所以看起来错误是由这一行引起的,但我不确定。
任何人都可以解决这个问题,请...
感谢您的阅读和回答:-)
发布于 2015-01-15 17:46:53
我知道这晚了几个月,但我自己也偶然发现了这个问题。我的解决方案是粘贴
需要'carrierwave/orm/activerecord‘
放到config/environment.rb ment.rb文件中。只需将其附加到末尾。
我的环境: Ruby 2.1.2p95;Rails 4.1.7;Carrierwave-0.10.0
发布于 2015-09-05 12:20:28
我把这个添加到了application.rb
require 'carrierwave'
require 'carrierwave/orm/activerecord'
Rails 4.2.0、Ruby 2.2.2、Carrierwave 0.10.0
发布于 2017-03-18 02:56:49
我把它放在这里,以防万一..
如果您使用的是spring
gem,那么您必须通过更改config/application.rb
或关闭并打开终端来“重新启动”它,或者:$ bin/spring stop
您可以在此处检查它的进程生存期(向右滚动):
$ ps aux | grep spring
alexey 55936 0.0 0.9 2645908 78440 ?? Ss Thu06PM 0:13.17 spring app | myapp | started 26 hours ago | development mode
alexey 81963 0.0 0.0 2481764 1608 ?? S Sat11PM 0:01.91 spring server | myapp | started 141 hours ago
如果需要就杀了它。
更多信息请访问:https://github.com/rails/spring
https://stackoverflow.com/questions/25712027
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