Full Trace for NoMethodError

无人久伴 提交于 2019-12-11 07:25:44

问题


This is essentially part 2. of my prior question, as requested I have created a new question due to the length of the code. Hope we can solve this, with your help I am sure that we can find a solution now with the new information.

Edit: Thanks for the input. here is the link to pt. 1 with the actual code: Sign in function not working.

ps. Pls don't forget to vote this question up.

Heres the user.rb:

# == Schema Information
#
# Table name: users
#
#  id                 :integer          not null, primary key
#  name               :string(255)
#  email              :string(255)
#  created_at         :datetime         not null
#  updated_at         :datetime         not null
#  encrypted_password :string(255)
#  salt               :string(255)
#

class User < ActiveRecord::Base
  attr_accessor   :password
  attr_accessible :email, :name, :password, :password_confirmation

  email_regex = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i

  validates :name, :presence => true,
                   :length => { :maximum => 50 }
  validates :email, :presence => true,
                    :format => { :with => email_regex },
                    :uniqueness => { :case_sensitive => false }
  validates :password, :presence => true,
                       :confirmation => true,
                       :length => { :within => 6..40 }

  before_save :encrypt_password

  def has_password?(submitted_password)
    encrypted_password == encrypted(submitted_password)
  end

  class << self 
    def User.authenticate(email, submitted_password)
      user = find_by_email(email)
      (user && user.has_password?(submitted_password)) ? user : nil
    end

    def authenticate_with_salt(id, cookie_salt)
      user = find_by_id(id)
      (user && user.salt == cookie_salt) ? user : nil
    end
  end

  private

  def encrypt_password
    self.salt = make_salt if new_record?
    self.encrypted_password = encrypt(password)
  end

  def encrypt(string)
    secure_hash("#{salt}--#{string}")
  end

  def make_salt
    secure_hash("#{Time.now.utc}--#{password}")
  end

  def secure_hash(string)
    Digest::SHA2.hexdigest(string)
  end               

end

and the initial Full Trace:

undefined method `encrypted' for #<User:0x007fdcde331a90>

Rails.root: /Users/anthonypanepinto/Sites/rails_projects/sample_app1
Application Trace | Framework Trace | Full Trace

activemodel (3.2.11) lib/active_model/attribute_methods.rb:407:in `method_missing'
activerecord (3.2.11) lib/active_record/attribute_methods.rb:149:in `method_missing'
app/models/user.rb:32:in `has_password?'
app/models/user.rb:38:in `authenticate'
app/controllers/sessions_controller.rb:7:in `create'
actionpack (3.2.11) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (3.2.11) lib/abstract_controller/base.rb:167:in `process_action'
actionpack (3.2.11) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (3.2.11) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
activesupport (3.2.11) lib/active_support/callbacks.rb:414:in `_run__1623305808682769517__process_action__2997016911314885603__callbacks'
activesupport (3.2.11) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.11) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks'
activesupport (3.2.11) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.11) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (3.2.11) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (3.2.11) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
activesupport (3.2.11) lib/active_support/notifications.rb:123:in `block in instrument'
activesupport (3.2.11) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (3.2.11) lib/active_support/notifications.rb:123:in `instrument'
actionpack (3.2.11) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
actionpack (3.2.11) lib/action_controller/metal/params_wrapper.rb:207:in `process_action'
activerecord (3.2.11) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (3.2.11) lib/abstract_controller/base.rb:121:in `process'
actionpack (3.2.11) lib/abstract_controller/rendering.rb:45:in `process'
actionpack (3.2.11) lib/action_controller/metal.rb:203:in `dispatch'
actionpack (3.2.11) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
actionpack (3.2.11) lib/action_controller/metal.rb:246:in `block in action'
actionpack (3.2.11) lib/action_dispatch/routing/route_set.rb:73:in `call'
actionpack (3.2.11) lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
actionpack (3.2.11) 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 (3.2.11) lib/action_dispatch/routing/route_set.rb:601:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
rack (1.4.4) lib/rack/etag.rb:23:in `call'
rack (1.4.4) lib/rack/conditionalget.rb:35:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/head.rb:14:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/flash.rb:242:in `call'
rack (1.4.4) lib/rack/session/abstract/id.rb:210:in `context'
rack (1.4.4) lib/rack/session/abstract/id.rb:205:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/cookies.rb:341:in `call'
activerecord (3.2.11) lib/active_record/query_cache.rb:64:in `call'
activerecord (3.2.11) lib/active_record/connection_adapters/abstract/connection_pool.rb:479:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
activesupport (3.2.11) lib/active_support/callbacks.rb:405:in `_run__3609576242730521204__call__105225653498443597__callbacks'
activesupport (3.2.11) lib/active_support/callbacks.rb:405:in `__run_callback'
activesupport (3.2.11) lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
activesupport (3.2.11) lib/active_support/callbacks.rb:81:in `run_callbacks'
actionpack (3.2.11) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/reloader.rb:65:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
railties (3.2.11) lib/rails/rack/logger.rb:32:in `call_app'
railties (3.2.11) lib/rails/rack/logger.rb:16:in `block in call'
activesupport (3.2.11) lib/active_support/tagged_logging.rb:22:in `tagged'
railties (3.2.11) lib/rails/rack/logger.rb:16:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/request_id.rb:22:in `call'
rack (1.4.4) lib/rack/methodoverride.rb:21:in `call'
rack (1.4.4) lib/rack/runtime.rb:17:in `call'
activesupport (3.2.11) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
rack (1.4.4) lib/rack/lock.rb:15:in `call'
actionpack (3.2.11) lib/action_dispatch/middleware/static.rb:62:in `call'
railties (3.2.11) lib/rails/engine.rb:479:in `call'
railties (3.2.11) lib/rails/application.rb:223:in `call'
rack (1.4.4) lib/rack/content_length.rb:14:in `call'
railties (3.2.11) lib/rails/rack/log_tailer.rb:17:in `call'
rack (1.4.4) lib/rack/handler/webrick.rb:59:in `service'
/usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'

Request

Parameters:

{"utf8"=>"✓",
 "authenticity_token"=>"/SEaqnrMf5X0pd4FVWbu8uWVAjTNw4LPKiXg+8Hl0PQ=",
 "session"=>{"email"=>"#",
 "password"=>"[FILTERED]"},
 "commit"=>"Sign in"}

回答1:


I'm guessing that

def has_password?(submitted_password)
  encrypted_password == encrypted(submitted_password)
end

should be

def has_password?(submitted_password)
  encrypted_password == encrypt(submitted_password)
end

More generally "how to read a stacktrace to solve a problem":

1) look at the top line of the stacktrace (the big wall of text)

activemodel (3.2.11) lib/active_model/attribute_methods.rb:407:in `method_missing'

Is that a line in your code? in this instance no: it's from activemodel.

2) keep looking until you get to the first line of code that is for your code. In this case its:

app/models/user.rb:32:in `has_password?'

This is the line in your code that is causing the problem.

3) go look at the line of code that's causing the problem. The stacktrace tell us that this is line 32 of the file app/models/user.rb

In this case it's the middle line of these three lines:

def has_password?(submitted_password)
  encrypted_password == encrypted(submitted_password)
end

4) figure out what went wrong, by reading the error message ;)

the error message is telling you that "encrypted" does not exist as a method yes?

So look in your user model and see if you have a method called encrypted...

In this case you don't, but you do have one call "encrypt" - good chance that you've just accidentally typed "encrypted" instead of "encrypt"... fix that and you problem is solved.

These four steps can be used to solve most errors of this kind.




回答2:


seems like you ruby cannot identify your encrypted method for User object. you should be able to resolve this by including

require 'digest/sha1'

for your user model

Eg:

require 'digest/sha1'
class User < ActiveRecord::Base
  #code
end 

read this question to understand more about encryption with out a gem



来源:https://stackoverflow.com/questions/14845786/full-trace-for-nomethoderror

易学教程内所有资源均来自网络或用户发布的内容,如有违反法律规定的内容欢迎反馈
该文章没有解决你所遇到的问题?点击提问,说说你的问题,让更多的人一起探讨吧!