为什么我会收到“无法找到表”用户的错误？

Question

我对Rails比较陌生，每当我测试登录页面时，我都会收到上述错误。 下面是测试视图文件：

<%= form_for :user, :url => create_path do |f| %> 
    <p> Email: <br /> <%= f.text_field :email %></p> 
    <p> Password: <br /> <%= f.password_field :password %></p> 
    <p><%= submit_tag "Sign In", :disable_with => "Please wait...", :class => "btn primary" %></p> 
<% end %> 

这里的用户控制器：

class UsersController < ApplicationController 
    before_filter :get_user, :except => [:register, :login, :create] 
    before_filter :user_signed_in?, :only => [:delete] 

    def create 
    if user = User.find_by_email(params[:user][:email]).try(:authenticate, params[:user][:password]) 
     session[:user_id] = user.id 
     redirect_to root_path # Or whatever you want i.e. redirect_to user 
    else 
     render :new, :flash => { :error => "Bad email/password combination" } 
    end 
    end 

    def delete 
    session.delete(:user_id) 
    end 

    def register 
    if Invite.find_by_hash(params[:hash]).blank? 
     redirect_to root_path 
     return 
    end 
    @user = User.new(params[:user]) 
    if(request.post? and @user.save) 
     flash[:notice] = "Account Created Successfully" 
     redirect_to root_path  
     return 
    else 
     flash.now[:warning] = @user.errors.full_messages 
    end 
    end 

    def destroy 
    @user = User.find(params[:id]) 
    @user.destroy 
    redirect_to root_path 
    end 

    def login 

    end 

    def get_user 
    @user = User.find(params[:id]) 
    end 

end 

我的用户模型：

class User < ActiveRecord::Base 
    has_secure_password 
    validates :email, :presence => true, :uniqueness => true, :length => {:minimum => 6} 
    validates_format_of :email, :with => /^([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})$/i 
    validates :name, :presence => true, :length => {:maximum => 32} 
    validates :password, :presence => true, :length => {:minimum => 8} 
    validates :username, :presence => true, :length => {:maximum => 20}, :uniqueness => true 
    validates :blog, :uniqueness => true 
    has_many :posts 
end 

我得到确切的错误是这样的：

ActiveRecord::StatementInvalid in UsersController#create 
Could not find table 'users' 

P.S .:我正在运行Rails 3.1.0.rc8。任何帮助，将不胜感激。谢谢。

更新：我似乎无法找到任何表。我刚刚升级到Rails 3.1，在此之前一切都很好。

Answer 1

如果您刚刚升级到Rails 3.1并且升级前一切正常，请检查您的database.yml配置。我怀疑配置是否由于升级而回到了默认值。

如果没有，请遵循Rajkamal的建议并确保您运行迁移。