未定义的方法`has_attached_file'与回形针2.3.8 gem for Rails 2使用Ruby 1.8.7 [英] Undefined method `has_attached_file' with paperclip 2.3.8 gem for Rails 2 using Ruby 1.8.7
问题描述
我试图在我的rails应用程序中使用回形针插件来上传图片。我在Ubuntu 10.04 os上使用了Rails 2.0.2和ruby 1.8.7，用于项目特定目的。
我指的是以下教程： -
我在回形针插件上做了一个git clone： - https://github.com/thoughtbot/paperclip ，但是像 ruby script /生成回形针group_post photo 不会为其生成迁移。然后，我通过ruby脚本/生成创建了相同的迁移，并上传了我的表 group_posts 的相应列。
然后我尝试安装gem，因为我使用的是activerecord和activesupport 2.0.2，我使用rubygems.org中的paperclip 2.3.8 gem。未定义的方法错误仍然我真的搞不明白为什么。
现在在这里命令 ruby script / generate paperclip group_post photo 对我来说工作得很好。
目前的错误我正好看起来像这样： - $ / b>
未定义的方法`has_attached_file'为＃< Class：0xb67119f0>
我观察到这种行为的一个有趣的事情是当我使用IRB时， require'paperclip'返回 true 但是我想知道他们为什么无法检测到我的rails应用程序中插件的方法。
Application Trace 同样是： -
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activerecord-2.0.2/lib/active_record/base.rb:1532:in' method_missing_without_paginate'
vendor在/ show / app / controllers /
Full Trace 这个例子是： -
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activerecord-2.0.2/lib/active_record /base.rb:1532:in`method_missing_without_paginate'
vendor / plugins / will_paginate / lib / will_paginate / finder.rb ：170：在`method_missing'
app / models / group_post.rb：9
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/ lib / active_support / dependencies.rb：203：`load_without_new_constant_marking'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies。 rb：203：在`load_file'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in` new_constants_in'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:202:in`load_file'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:94:in`require_or_load'
/ home / mohnish /。 rvm / gems / ruby-1.8.7-p334 / gems / activesupport-2.0.2 / lib / active_support / dependencies.rb：248：在`load_missing_constant'
/home/mohnish/.rvm/gems/ruby- 1.8.7-p334 / gems / activesupport-2.0.2 / lib / active_support / dependencies.rb：453：在`const_missing_not_from_s 3_library'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/aws-s3-0.6.2/lib/aws/s3/extensions.rb:206:in' const_missing'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:465:in`const_missing'
/ home /mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:471:in`send'
/home/mohnish/.rvm/ gems / ruby-1.8.7-p334 / gems / activesupport-2.0.2 / lib / active_support / dependencies.rb：471：在`const_missing'
app / controllers / groups_controller.rb：27：在`show'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in`send'
/ home /mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in`perform_action_without_filters'
/home/mohnish/.rvm/ gem / ruby-1.8.7-p334 / gems / actionpack-2.0.2 / lib / action_controller / filters.rb：697：在`call_filters'
/home/mohnish/.rvm/gems/ruby-1.8。 7-P334 /宝石/ actionpa ck-2.0.2 / lib / action_controller / filters.rb：689：在`perform_action_without_benchmark'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/ lib / action_controller / benchmarking.rb：68：在`perform_action_without_rescue'
/home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/1.8/benchmark.rb:293:in`测量'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in`perform_action_without_rescue'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/rescue.rb:199:in`perform_action_without_caching'
/ home / mohnish /。 rvm / gems / ruby-1.8.7-p334 / gems / actionpack-2.0.2 / lib / action_controller / caching.rb：678：在`perform_action'
/home/mohnish/.rvm/gems/ruby- 1.8.7-p334 / gems / activerecord-2.0.2 / lib / active_record / connection_adapters / abstract / query_cache.rb：33：在`cache'
/home/mohnish/.rvm/gems/ruby-1.8。 7-p334 / gems / activerecord-2.0.2 / lib / active_record / query_cache.rb：8：在`cache'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/caching.rb:677:in`perform_action'
/ home / mohnish / .rvm / gems / ruby-1.8.7-p334 / gems / actionpack-2.0.2 / lib / action_controller / base.rb：524：在'send'
/home/mohnish/.rvm/gems /ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in`process_without_filters'
/home/mohnish/.rvm/gems/ruby-1.8.7 -p334 / gems / actionpack-2.0.2 / lib / action_controller / filters.rb：685：in`process_without_session_management_support'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack -2.0.2 / lib / action_controller / session_management.rb：123：在`process_without_test'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib /action_controller/test_process.rb:15:in'process'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/base.rb ：388：在`process'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/dispa tcher.rb：171：`handle_request'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:115： in`dispatch'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:126:in`dispatch_cgi'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:9:in`dispatch'
/ home / mohnish /.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/rails.rb:76:in`process'
/home/mohnish/.rvm/gems/ ruby-1.8.7-p334 / gems / mongrel-1.1.5 / lib / mongrel / rails.rb：74：在`synchronize'
/home/mohnish/.rvm/gems/ruby-1.8.7- p334 / gems / mongrel-1.1.5 / lib / mongrel / rails.rb：74：在`process'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel- 1.1.5 / lib / mongrel.rb：159：在`process_client'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel。 rb：158：在'each'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:15 8：在`process_client'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:285:in`run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:285:in`initialize'
/ home / mohnish /。 rvm / gems / ruby-1.8.7-p334 / gems / mongrel-1.1.5 / lib / mongrel.rb：285：在`new'
/home/mohnish/.rvm/gems/ruby-1.8。 7-p334 / gems / mongrel-1.1.5 / lib / mongrel.rb：285：在`run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel- 1.1.5 / lib / mongrel.rb：268：在`initialize'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel。 rb：268：在`new'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:268:in`run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:282:in`run'
/ home /mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:281:in`each'
/home/mohnish/.rvm/宝石/红宝石1.8.7-P334 /宝石/杂种-1.1.5 / LIB /杂种/配置器。 rb：281：在`run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/mongrel_rails:128:in`run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/command.rb:212:in`run'
/ home / mohnish /.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/mongrel_rails:281
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems /activesupport-2.0.2/lib/active_support/dependencies.rb:489:in`load'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2 /lib/active_support/dependencies.rb:489:in`load'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies .rb：342：在`new_constants_in'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in `load'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/commands/servers/mongrel.rb:64
/ home /mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in` gem_original_require'
/home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in`require'
/ home /mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in`require'
/home/mohnish/.rvm/ gems / ruby-1.8.7-p334 / gems / activesupport-2.0.2 / lib / active_support / dependencies.rb：342：在`new_constants_in'
/home/mohnish/.rvm/gems/ruby-1.8。 7-p334 / gems / activesupport-2.0.2 / lib / active_support / dependencies.rb：496：在'require'中
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/ rails-2.0.2 / lib / commands / server.rb：39
/home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb ：31：`gem_original_require'
/home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in`require'
脚本/服务器：3
我的groups_controller.rb show方法看起来像这样，这里是第27行是 @group_post =组Post.new（params [：group_post]）： -
def show
@ investor_group = InvestorGroup.find（params [：id]）
@members = @ investor_group.activated_members
＃来自讨论方法的代码
investor_id = session ['investor_id']
@投资者= Investor.find（investor_id）
@members = @ investor_group.activated_members
除非@ current_user.is_an_existing_member_of_group（@investor_group）
flash [：notice] = 请加入这个小组参与讨论
redirect_to：action => ：show，：id => @investor_group并返回
else
@group_post = GroupPost.new（params [：group_post]）＃第27行，试过GroupPost.create也..似乎是没有用的..
结束
＃@ group_post = GroupPost.new（params [：group_post]）
@ group_post.investor_group_id = @ investor_group.id
@ group_post.post_by = investor_id
除非@ group_post.message 。空白？
如果@ group_post.save
flash [：notice] ='发表成功了'
else
flash [：notice] ='发表不成功
结束
#redirect_to：action => ：show，：id => @investor_group并返回更改..适当....
结束
#if @ group_post.message.blank？
＃flash [：notice] ='帖子不能为空'
#end
@group_all_posts = GroupPost.find（：all，：conditions => ['investor_group_id ）=''，'＃{@investor_group.id}]，：order =>'created_at DESC'）
＃来自讨论方法的代码
结束
group_post模型看起来像这样，第9行有以下代码has_attached_file：photo： - $ /
class GroupPost < ActiveRecord :: Base
has_many：group_comments
belongs_to：investor_group
validates_presence_of：message
#include Paperclip
requirepaperclip
＃Paperclip
has_attached_file：photo＃line 9
end
我的视图文件，我试图上传图片以及一个职位看起来像这样： - $ / b>
<％form_for：group_post ，@group_post，：url => {：action => ：show}，：html => {：multipart => 'true'}，：id => 'new_post'do | f | - ％GT;
< p>< label>开始讨论：< / label>< br><％= f.text_field：message％>< / p>
<％= f.file_field：photo％>< / p>
< p><％= submit_tag发布％>< / p>
<％end％>
我尝试了以下内容： - $ /
- 为什么在安装PaperClip时为`has_attached_file`定义了一个未定义的方法？
-
Paperclip安装后的未定义方法has_attached_file？
我尝试重新启动我的服务器，但没有解决我的问题;
com / thoughtbot / paperclip / issues / 192rel =nofollow noreferrer> https://github.com/thoughtbot/paperclip/issues/192 Undefined method has_attached_file after Paperclip installation?
I tried restarting my server, but it didn't solve my problem;
因为它似乎使用的是
以上的Rails版本。
ul>
我尝试了包括Paperclip - 但它r eally似乎没有帮助我的情况...
我已经在我的group_post.rb和我的environment.rb文件中添加了一个require作为requirepaperclip。我仍然得到一个未定义的方法错误。我不知道为什么..
Imumar的回形针叉，我手动粘贴在我的供应商/插件目录git克隆后..我得到了以下错误（我有一种感觉肯定会有一个依赖性的问题，因为他的版本可能只与一个更高的轨道兼容版本：
pre $ mo $ c $ mohnish桌面〜/ UP / dev $ ruby脚本/服务器-p 4000
= >引导Mongrel（使用脚本/服务器webrick来强制WEBrick）
=>从http://0.0.0.0:4000开始的Rails应用程序
=>使用-d分开
=> Ctrl-C关闭服务器
**以0.0.0.0:4000开始Mongrel侦听
**使用开发环境启动Rails ...
退出
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gem s / activesupport-2.0.2 / lib / active_support / dependencies.rb：263：in`load_missing_constant'：未初始化的常量Paperclip :: CallbackCompatability :: Rails20（NameError）$ b $ from /home/mohnish/.rvm/gems/ ruby-1.8.7-p334 / gems / activesupport-2.0.2 / lib / active_support / dependencies.rb：453：在`const_missing'
从/ home / mohnish / UP / dev / vendor / plugins / paperclip / lib / paperclip.rb：118：在`included'
from /home/mohnish/UP/dev/vendor/plugins/paperclip/lib/paperclip.rb:364:in`include'
from / home / mohnish / UP / dev / vendor / plugins / paperclip / lib / paperclip.rb：364：从/ home / mohnish / UP / dev / vendor / plugins / paperclip / lib / paperclip发送
。 rb：364
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in`gem_original_require'
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in`require'
from / home / mohnish /。 RVM /宝石/红宝石1.8.7-P334 /宝石/活性support-2.0.2 / lib / active_support / dependencies.rb：496：在'require'中
来自/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2 /lib/active_support/dependencies.rb:342:in`new_constants_in'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/依赖关系.rb：496：在`require'
from /home/mohnish/UP/dev/vendor/plugins/paperclip/init.rb:1：in`evaluate_init_rb'$ b $ from / home / mohnish / .rvm / gems / ruby-1.8.7-p334 / gems / rails-2.0.2 / lib / rails / plugin.rb：79：在`evaluate_init_rb'
from /home/mohnish/.rvm/gems/ ruby-1.8.7-p334 / gems / activesupport-2.0.2 / lib / active_support / core_ext / kernel / reporting.rb：11：在'silence_warnings'
from /home/mohnish/.rvm/gems/ruby -1.8.7-p334 / gems / rails-2.0.2 / lib / rails / plugin.rb：75：在`evaluate_init_rb'
from /home/mohnish/.rvm/gems/ruby-1.8.7- p334 / gems / rails-2.0.2 / lib / rails / plugin.rb：39：`load'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails -2。 0.2 / lib / rails / plugin / loader.rb：33：`load_plugins'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib /rails/plugin/loader.rb:32:in`each'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/rails/ plugin / loader.rb：32：`load_plugins'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/initializer.rb:189 ：在`load_plugins'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/initializer.rb:105:in`process'$ b $ from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/initializer.rb:49:in`send'
from / home / mohnish /.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/initializer.rb:49:in`run'$ b $ from / home / mohnish / UP / dev / config / environment.rb：16
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in`gem_original_require'$ b来自/home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/ruby的$ b gems / custom_require.rb：31：`require'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb ：496：在`require'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in` 'new_constants_in'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in`require'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:147:in`rails'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/mongrel_rails:113:in`cloaker_'
from /home/mohnish/.rvm /gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:149:in`call'
from /home/mohnish/.rvm/gems/ruby- 1.8.7-p334 / gems / mongrel-1.1.5 / lib / mongrel / configurator.rb：149：在`listener'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334 /gems/mongrel-1.1.5/bin/mongrel _rails：99：`cloaker_'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:50:in从/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:50:in`initialize'$ b调用
$ / from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/mongrel_rails:84:in`new'
from / home / mohnish /。 rvm / gems / ruby-1.8.7-p334 / gems / mongrel-1.1.5 / bin / mongrel_rails：84：在`run'
从/home/mohnish/.rvm/gems/ruby-1.8.7 -p334 / gems / mongrel-1.1.5 / lib / mongrel / command.rb：212：在`run'
从/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/ mongrel-1.1.5 / bin / mongrel_rails：281
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb： 489：在`load'中
从/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:在`load '来自/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/a的
ctivesupport-2.0.2 / lib / active_support / dependencies.rb：342：在`new_constants_in'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2 /lib/active_support/dependencies.rb:489:in`load'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/commands/ servers / mongrel.rb：64
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in`gem_original_require' / home / mohnish /.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:inrequire
from / home /mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in`require'
from /home/mohnish/.rvm /gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in`new_constants_in'
from /home/mohnish/.rvm/gems/ruby- 1.8.7-p334 / gems / activesupport-2.0.2 / lib / active_support / dependencies.rb：496：在`require'
中/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/commands/server.rb:39
from /home/mohnish/.rvm/rubies/ ruby-1.8.7-p334 / lib / ruby / site_ruby / 1.8 / rubygems / custom_require.rb：31：在`gem_original_require'
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334 /lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in`require'
from script / server：3
mohnish @ mohnish-desktop：〜/ UP / dev $
我真的很想知道我要去哪里。
任何建议/见解将不胜感激。这对我来说是迫切的，因为我有一个部署到期，我会很高兴得到及时的答复/答复。
非常感谢..
$首先，为了覆盖显而易见的基础：做供应商/插件只是为了确保某个版本的回形针是实际上在你的插件目录中，因此你的应用程序是可以访问的。其次，模型中的require paperclip似乎是错误的。我猜测，要求应该在你的环境中进行。试试把它放在config / environments.rb的末尾。第三（也许和你的具体问题无关） - 2.0.2是一个非常老的rails版本。如果你可以，我会升级到2.3.5，或者至少是2.2.x.对于我们所知道的 - 你可能会遇到一个问题，因为你有一个新的回形针和一个老版本的轨道...这有时会有所作为。
你发布的其他许多链接都是指Rails3之前的安装 - 因此，他们问题的解决方案将与你的不同。
I am trying to use the paperclip plugin in my rails app to upload images for posts. I am using Rails 2.0.2 and ruby 1.8.7 on Ubuntu 10.04 os for project specific purposes.
I am referring to the following tutorials for this :-
I did a git clone on the paperclip plugin via:- https://github.com/thoughtbot/paperclip , but the command like ruby script/generate paperclip group_post photo didn't generate a migration for it. I then created a migration for the same through ruby script/generate and uploaded the appropriate columns of my table group_posts.
I then tried to install the gem and since I am using activerecord and activesupport 2.0.2 I used paperclip 2.3.8 gem from rubygems.org.The undefined method error still persisted, I really couldn't figure out why.
Now here.. the command ruby script/generate paperclip group_post photo worked perfectly fine for me.
The current error I am getting exactly looks like this:-
undefined method `has_attached_file' for #<Class:0xb67119f0>
A funny thing that I observed wrt this behavior was when I made use of IRB, require 'paperclip' returned true but I wonder why they can't detect the method that comes along with the plugin in my rails app.
The Application Trace for the same is:-
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activerecord-2.0.2/lib/active_record/base.rb:1532:in `method_missing_without_paginate'
vendor/plugins/will_paginate/lib/will_paginate/finder.rb:170:in `method_missing'
app/models/group_post.rb:9
app/controllers/groups_controller.rb:27:in `show'
The Full Trace for this just in case is:-
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activerecord-2.0.2/lib/active_record/base.rb:1532:in `method_missing_without_paginate'
vendor/plugins/will_paginate/lib/will_paginate/finder.rb:170:in `method_missing'
app/models/group_post.rb:9
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:203:in `load_without_new_constant_marking'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:203:in `load_file'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:202:in `load_file'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:94:in `require_or_load'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:248:in `load_missing_constant'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:453:in `const_missing_not_from_s3_library'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/aws-s3-0.6.2/lib/aws/s3/extensions.rb:206:in `const_missing'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:465:in `const_missing'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:471:in `send'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:471:in `const_missing'
app/controllers/groups_controller.rb:27:in `show'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in `send'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/base.rb:1158:in `perform_action_without_filters'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/filters.rb:697:in `call_filters'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/filters.rb:689:in `perform_action_without_benchmark'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
/home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/1.8/benchmark.rb:293:in `measure'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/rescue.rb:199:in `perform_action_without_caching'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/caching.rb:678:in `perform_action'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/query_cache.rb:33:in `cache'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activerecord-2.0.2/lib/active_record/query_cache.rb:8:in `cache'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/caching.rb:677:in `perform_action'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in `send'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/base.rb:524:in `process_without_filters'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/filters.rb:685:in `process_without_session_management_support'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/session_management.rb:123:in `process_without_test'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/test_process.rb:15:in `process'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/base.rb:388:in `process'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:171:in `handle_request'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:115:in `dispatch'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:126:in `dispatch_cgi'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/actionpack-2.0.2/lib/action_controller/dispatcher.rb:9:in `dispatch'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/rails.rb:76:in `process'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/rails.rb:74:in `synchronize'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/rails.rb:74:in `process'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:159:in `process_client'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:158:in `each'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:158:in `process_client'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `initialize'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `new'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `initialize'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `new'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:282:in `run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:281:in `each'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:281:in `run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/mongrel_rails:128:in `run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/command.rb:212:in `run'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/mongrel_rails:281
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in `load'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in `load'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in `load'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/commands/servers/mongrel.rb:64
/home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
/home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/commands/server.rb:39
/home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
/home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
script/server:3
My groups_controller.rb show method looks like this, here line 27 is @group_post = GroupPost.new(params[:group_post]) :-
def show
@investor_group = InvestorGroup.find(params[:id])
@members = @investor_group.activated_members
# code taken from discuss method
investor_id = session['investor_id']
@investor = Investor.find(investor_id)
@members = @investor_group.activated_members
unless @current_user.is_an_existing_member_of_group(@investor_group)
flash[:notice] = "Please join this group to participate in discussions"
redirect_to :action => :show, :id => @investor_group and return
else
@group_post = GroupPost.new(params[:group_post]) # line 27, tried GroupPost.create also.. seems to be of no avail..
end
#@group_post = GroupPost.new(params[:group_post])
@group_post.investor_group_id = @investor_group.id
@group_post.post_by = investor_id
unless @group_post.message.blank?
if @group_post.save
flash[:notice] = 'Post was successfull'
else
flash[:notice] = 'Post was not successfull'
end
#redirect_to :action => :show, :id => @investor_group and return to change.. appropriately....
end
#if @group_post.message.blank?
# flash[:notice] = 'Post can\'t be blank.'
#end
@group_all_posts = GroupPost.find(:all, :conditions => [ 'investor_group_id = ?', "#{@investor_group.id}" ], :order => 'created_at DESC')
# code taken from discuss method
end
The group_post model looks like this with line 9 having the following code has_attached_file :photo :-
class GroupPost < ActiveRecord::Base has_many :group_comments belongs_to :investor_group validates_presence_of :message
#include Paperclip require "paperclip" # Paperclip has_attached_file :photo # line 9
end
Part of my view file where I am trying to upload the picture along with a post looks like this:-
<%form_for :group_post, @group_post, :url => {:action => :show},:html => {:multipart => 'true'},:id => 'new_post' do |f| -%>
<p><label>Start Discussion:</label><br><%=f.text_field :message%></p>
<%=f.file_field :photo%></p>
<p><%=submit_tag "Post"%></p>
<%end%>
I tried what was given in:-
This option didn't seem applicable to my case as it seems to be using a higher Rails version
I tried the include Paperclip - but it really didn't seem to help my case...
I have added a require in my group_post.rb and in my environment.rb file as require "paperclip". I still get an undefined method error. I don't know why..
On referring to this I tried Imumar's fork of paperclip, I manually pasted it in my vendor/plugins directory after git cloning it.. I got the following error( I have a feeling there surely would have been a dependency issue as his version might be compatible only with a higher rails version:
mohnish@mohnish-desktop:~/UP/dev$ ruby script/server -p 4000
=> Booting Mongrel (use 'script/server webrick' to force WEBrick)
=> Rails application starting on http://0.0.0.0:4000
=> Call with -d to detach
=> Ctrl-C to shutdown server
** Starting Mongrel listening at 0.0.0.0:4000
** Starting Rails with development environment...
Exiting
/home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:263:in `load_missing_constant': uninitialized constant Paperclip::CallbackCompatability::Rails20 (NameError)
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:453:in `const_missing'
from /home/mohnish/UP/dev/vendor/plugins/paperclip/lib/paperclip.rb:118:in `included'
from /home/mohnish/UP/dev/vendor/plugins/paperclip/lib/paperclip.rb:364:in `include'
from /home/mohnish/UP/dev/vendor/plugins/paperclip/lib/paperclip.rb:364:in `send'
from /home/mohnish/UP/dev/vendor/plugins/paperclip/lib/paperclip.rb:364
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
from /home/mohnish/UP/dev/vendor/plugins/paperclip/init.rb:1:in `evaluate_init_rb'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/rails/plugin.rb:79:in `evaluate_init_rb'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/rails/plugin.rb:75:in `evaluate_init_rb'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/rails/plugin.rb:39:in `load'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/rails/plugin/loader.rb:33:in `load_plugins'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/rails/plugin/loader.rb:32:in `each'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/rails/plugin/loader.rb:32:in `load_plugins'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/initializer.rb:189:in `load_plugins'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/initializer.rb:105:in `process'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/initializer.rb:49:in `send'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/initializer.rb:49:in `run'
from /home/mohnish/UP/dev/config/environment.rb:16
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/../lib/mongrel/rails.rb:147:in `rails'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/mongrel_rails:113:in `cloaker_'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:149:in `call'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:149:in `listener'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/mongrel_rails:99:in `cloaker_'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:50:in `call'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/configurator.rb:50:in `initialize'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `new'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/mongrel_rails:84:in `run'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/lib/mongrel/command.rb:212:in `run'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/mongrel-1.1.5/bin/mongrel_rails:281
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in `load'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in `load'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:489:in `load'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/commands/servers/mongrel.rb:64
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require'
from /home/mohnish/.rvm/gems/ruby-1.8.7-p334/gems/rails-2.0.2/lib/commands/server.rb:39
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require'
from /home/mohnish/.rvm/rubies/ruby-1.8.7-p334/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from script/server:3
mohnish@mohnish-desktop:~/UP/dev$
I really wonder where I am going wrong..
Any suggestions/insights would be highly appreciated. This is urgent for me as I have a deployment due, I would be really glad to get prompt answers/responses..
Thanks a lot..
Ok, firstly, just to cover the "obvious" base: do "ls vendor/plugins" just to make sure that some version of paperclip is actually in your plugins directory and is therefore reachable by your application.
Secondly - the "require paperclip" in the model seems wrong to me. I'm guessing that require should go in your environment instead. Try putting it at the end of config/environments.rb instead.
Thirdly (and maybe unrelated to your specific problem) - 2.0.2 is a really old version of rails. If you can I'd upgrade to 2.3.5, or at the very least, 2.2.x. For all we know - you could have a problem because you've got a new version of paperclip and an old version of rails... this does sometimes make a difference.
A lot of the other links you posted are referring to installations up to Rails3 - the solutions to their problems will be different to yours for that reason.
这篇关于未定义的方法`has_attached_file'与回形针2.3.8 gem for Rails 2使用Ruby 1.8.7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IT屋！
