从铁轨控制台访问数据库

问题描述：

当我打开我的Rails控制台，运行./script/console（脚本文件夹中包含一个控制台文件），我在控制台输入Users.find（：所有），我得到这个消息从铁轨控制台访问数据库

'NameError: uninitialized constant User 
    from (irb):1 
'

我每次在控制台中运行一个commnad时都有类似的消息（知道我没有通过irb连接）。我搜索了一下，看到了一些类似的问题，这些问题在堆栈上被问到，我没有得到任何满意的答案。有人有一个想法？

Eidt 1：我不konow如果它是有用的，但这里的建议被张贴在用户模型类

require "digest/sha1" 
require_dependency "event" 

class User < ActiveRecord::Base 
    include UrlLinting 
    include Gitorious::Authorization 

    has_many :projects 
    has_many :memberships, :dependent => :destroy 
    has_many :groups, :through => :memberships 
    has_many :repositories, :as => :owner, :conditions => ["kind != ?", Repository::KIND_WIKI], 
    :dependent => :destroy 
    has_many :cloneable_repositories, :class_name => "Repository", 
    :conditions => ["kind != ?", Repository::KIND_TRACKING_REPO] 
    has_many :committerships, :as => :committer, :dependent => :destroy 
    has_many :commit_repositories, :through => :committerships, :source => :repository, 
    :conditions => ["repositories.kind NOT IN (?)", Repository::KINDS_INTERNAL_REPO] 
    has_many :ssh_keys, :order => "id desc", :dependent => :destroy 
    has_many :comments 
    has_many :email_aliases, :class_name => "Email", :dependent => :destroy 
    has_many :events, :order => "events.created_at asc", :dependent => :destroy 
    has_many :events_as_target, :class_name => "Event", :as => :target 
    has_many :favorites, :dependent => :destroy 
    has_many :feed_items, :foreign_key => "watcher_id" 
    has_many :content_memberships, :as => :member 

    # Virtual attribute for the unencrypted password 
    attr_accessor :password, :current_password 

    attr_protected :login, :is_admin, :password, :current_password 

    # For new users we are a little more strict than for existing ones. 
    USERNAME_FORMAT = /[a-z0-9\-_\.]+/i.freeze 
    USERNAME_FORMAT_ON_CREATE = /[a-z0-9\-]+/.freeze 
    validates_presence_of  :login, :email,    :if => :password_required? 
    validates_format_of  :login, :with => /^#{USERNAME_FORMAT_ON_CREATE}$/i, :on => :create 
    validates_format_of  :login, :with => /^#{USERNAME_FORMAT}$/i, :on => :update 
    validates_format_of  :email, :with => Email::FORMAT 
    validates_presence_of  :password,     :if => :password_required? 
    validates_presence_of  :password_confirmation,  :if => :password_required? 
    validates_length_of  :password, :within => 4..40, :if => :password_required? 
    validates_confirmation_of :password,     :if => :password_required? 
    validates_length_of  :login, :within => 3..40 
    validates_length_of  :email, :within => 3..100 
    validates_uniqueness_of :login, :email, :case_sensitive => false 
    validates_acceptance_of :terms_of_use, :on => :create, :allow_nil => false 
    validates_format_of  :avatar_file_name, :with => /\.(jpe?g|gif|png|bmp|svg|ico)$/i, :allow_blank => true 

    before_save :encrypt_password 
    before_create :make_activation_code 
    before_validation :lint_identity_url, :downcase_login 
    after_save :expire_avatar_email_caches_if_avatar_was_changed 
    after_destroy :expire_avatar_email_caches 

    state_machine :aasm_state, :initial => :pending do 
    state :terms_accepted 

    event :accept_terms do 
     transition :pending => :terms_accepted 
    end 

    end

编辑2：当我跑我的控制台我省略了一些错误消息（但控制台负载）

/var/www/gitorious/config/environment.rb:25:RuntimeError: Your config/gitorious.yml does not have an entry for your current Rails environment. Please consult config/gitorious.sample.yml for instructions. 
/usr/lib/ruby/gems/1.8/gems/rails-2.3.14/lib/rails/backtrace_cleaner.rb:2:NameError: uninitialized constant ActiveSupport::BacktraceCleaner 
/usr/lib/ruby/gems/1.8/gems/rails-2.3.14/lib/console_with_helpers.rb:5:NameError: uninitialized constant ApplicationController

答

假设你有一个像下面定义User型号： app/models/user.rb

class User < ActiveRecord::Base 
    #Your things 
end

使用型号名称（即）User不Users：

User.find(:all) or User.all # This will display all user records

当然，我得到了同样的信息：NameError：未初始化的常数用户 \t从（IRB）：3 – Newben 2013-02-17 16:25:57

那么你不必在'应用程序/ models'定义'User'模型。检查你的'应用程序/模型'n告诉你有什么.. – codeit 2013-02-17 16:28:25

当然，我创建用户的帐户，我可以登录与他们没有p – Newben 2013-02-17 16:30:46

答

这里是没有的伎俩：不是./script/console跑，我跑

export RAILS_ENV=production && ./script/console

答

从错误中，我可以看到你从irb调用表。如果你想从铁轨控制台访问表，然后在命令行，而不是irb应键入：

rails console

其次，如果你想获得所有从用户表中的记录，你应该使用：

User.all

从铁轨控制台访问数据库

相关推荐