我之前发布了一个类似于此的问题，并且建议我使用friendlyIds gem但是它不适合我，因为我有一些真正的问题。快速行动......
我正在尝试创建指向 whatever.com/first_name-second_name 的网址 我的工作但是它没有说明人们使用相同名称注册的时间。
我在网上找到了这个代码，对我而言似乎很合理 - 我的generate_slug方法在我的user_controller中，但是当我再次尝试注册我的应用程序时，我收到了错误;
UsersController中的NoMethodError #create ＃
的未定义方法`user'这是generate_slug方法;
def generate_slug
if user(:slug => full_name.parameterize).count > 0
n = 1
while user(:slug => "#{full_name.parameterize}-#{n}").count > 0
n += 1
end
self.slug= "#{full_name.parameterize}-#{n}"
else
self.slug = full_name.parameterize
end
end
继续用户#create;
def create
user = User.find_by_email(params[:sessions][:email])
if user && user.authenticate(params[:sessions][:password])
if params[:remember_me]
cookies.permanent[:auth_token] = user.auth_token
else
cookies[:auth_token] = user.auth_token
end
redirect_to users_show_path(current_user), notice: "Logged in"
else
flash.now.alert = "Email or password is invalid."
render "new"
end
end
有人能看出这有什么问题吗？我已经尝试了各种各样的东西，并且对它进行了攻击，但我对rails非常陌生，并且不确定我在这里做错了什么。
非常感谢任何帮助或指示，
谢谢你的时间！
修改
1 - 这是完整的痕迹;
activemodel (3.2.10) lib/active_model/attribute_methods.rb:407:in `method_missing'
activerecord (3.2.10) lib/active_record/attribute_methods.rb:149:in `method_missing'
app/models/user.rb:38:in `generate_slug'
activesupport (3.2.10) lib/active_support/callbacks.rb:418:in `_run__4251811508524484974__create__672836159521965693__callbacks'
activesupport (3.2.10) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.10) lib/active_support/callbacks.rb:385:in `_run_create_callbacks'
activesupport (3.2.10) lib/active_support/callbacks.rb:81:in `run_callbacks'
activerecord (3.2.10) lib/active_record/callbacks.rb:268:in `create'
activerecord (3.2.10) lib/active_record/persistence.rb:348:in `create_or_update'
activerecord (3.2.10) lib/active_record/callbacks.rb:264:in `block in create_or_update'
activesupport (3.2.10) lib/active_support/callbacks.rb:403:in `_run__4251811508524484974__save__672836159521965693__callbacks'
activesupport (3.2.10) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.10) lib/active_support/callbacks.rb:385:in `_run_save_callbacks'
activesupport (3.2.10) lib/active_support/callbacks.rb:81:in `run_callbacks'
activerecord (3.2.10) lib/active_record/callbacks.rb:264:in `create_or_update'
activerecord (3.2.10) lib/active_record/persistence.rb:84:in `save'
activerecord (3.2.10) lib/active_record/validations.rb:50:in `save'
activerecord (3.2.10) lib/active_record/attribute_methods/dirty.rb:22:in `save'
activerecord (3.2.10) lib/active_record/transactions.rb:259:in `block (2 levels) in save'
activerecord (3.2.10) lib/active_record/transactions.rb:313:in `block in with_transaction_returning_status'
activerecord (3.2.10) lib/active_record/connection_adapters/abstract/database_statements.rb:192:in `transaction'
activerecord (3.2.10) lib/active_record/transactions.rb:208:in `transaction'
activerecord (3.2.10) lib/active_record/transactions.rb:311:in `with_transaction_returning_status'
activerecord (3.2.10) lib/active_record/transactions.rb:259:in `block in save'
activerecord (3.2.10) lib/active_record/transactions.rb:270:in `rollback_active_record_state!'
activerecord (3.2.10) lib/active_record/transactions.rb:258:in `save'
app/controllers/users_controller.rb:10:in `create'
actionpack (3.2.10) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (3.2.10) lib/abstract_controller/base.rb:167:in `process_action'
actionpack (3.2.10) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (3.2.10) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
activesupport (3.2.10) lib/active_support/callbacks.rb:414:in `_run__1712494193629644471__process_action__997902979293854086__callbacks'
activesupport (3.2.10) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.10) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks'
activesupport (3.2.10) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.10) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (3.2.10) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (3.2.10) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
activesupport (3.2.10) lib/active_support/notifications.rb:123:in `block in instrument'
activesupport (3.2.10) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (3.2.10) lib/active_support/notifications.rb:123:in `instrument'
actionpack (3.2.10) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
actionpack (3.2.10) lib/action_controller/metal/params_wrapper.rb:207:in `process_action'
activerecord (3.2.10) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (3.2.10) lib/abstract_controller/base.rb:121:in `process'
actionpack (3.2.10) lib/abstract_controller/rendering.rb:45:in `process'
actionpack (3.2.10) lib/action_controller/metal.rb:203:in `dispatch'
actionpack (3.2.10) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
actionpack (3.2.10) lib/action_controller/metal.rb:246:in `block in action'
actionpack (3.2.10) lib/action_dispatch/routing/route_set.rb:73:in `call'
actionpack (3.2.10) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
actionpack (3.2.10) lib/action_dispatch/routing/route_set.rb:36:in `call'
journey (1.0.4) lib/journey/router.rb:68:in `block in call'
journey (1.0.4) lib/journey/router.rb:56:in `each'
journey (1.0.4) lib/journey/router.rb:56:in `call'
actionpack (3.2.10) lib/action_dispatch/routing/route_set.rb:601:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
rack (1.4.3) lib/rack/etag.rb:23:in `call'
rack (1.4.3) lib/rack/conditionalget.rb:35:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/head.rb:14:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/flash.rb:242:in `call'
rack (1.4.3) lib/rack/session/abstract/id.rb:210:in `context'
rack (1.4.3) lib/rack/session/abstract/id.rb:205:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/cookies.rb:341:in `call'
activerecord (3.2.10) lib/active_record/query_cache.rb:64:in `call'
activerecord (3.2.10) lib/active_record/connection_adapters/abstract/connection_pool.rb:479:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
activesupport (3.2.10) lib/active_support/callbacks.rb:405:in `_run__4266248573959168775__call__672836159521965693__callbacks'
activesupport (3.2.10) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.10) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
activesupport (3.2.10) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.10) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/reloader.rb:65:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
railties (3.2.10) lib/rails/rack/logger.rb:32:in `call_app'
railties (3.2.10) lib/rails/rack/logger.rb:16:in `block in call'
activesupport (3.2.10) lib/active_support/tagged_logging.rb:22:in `tagged'
railties (3.2.10) lib/rails/rack/logger.rb:16:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/request_id.rb:22:in `call'
rack (1.4.3) lib/rack/methodoverride.rb:21:in `call'
rack (1.4.3) lib/rack/runtime.rb:17:in `call'
activesupport (3.2.10) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
rack (1.4.3) lib/rack/lock.rb:15:in `call'
actionpack (3.2.10) lib/action_dispatch/middleware/static.rb:62:in `call'
railties (3.2.10) lib/rails/engine.rb:479:in `call'
railties (3.2.10) lib/rails/application.rb:223:in `call'
rack (1.4.3) lib/rack/content_length.rb:14:in `call'
railties (3.2.10) lib/rails/rack/log_tailer.rb:17:in `call'
rack (1.4.3) lib/rack/handler/webrick.rb:59:in `service'
/usr/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/usr/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/usr/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
2 - 在用户模型的before_create中创建generate_slug
3 - 我也遇到了一些问题 - 它似乎非常有气质 - 正如你所说我试图改用用户但是没有用 - 但是current_user没有继续工作 - 我会立即研究
4 - 不，我没有使用身份验证宝石 - 我只是用它来尝试学习一些轨道及其背后的理论，所以我试图避开宝石： ）
答案 0 :(得分：0)
我们需要更多背景资料。
generate_slug来自哪里？在before_create模型用户？current_user方法的redirect_to中致电create。为什么不先前定义的user变量？答案 1 :(得分：0)
将user_id添加到slug中是不是很容易？
def generate_slug
"#{id}-#{full_name.parameterize}"
end