Ruby on rails Rails db:seed"；雷克流产了！ArgumentError:参数数目错误（2代表0..1）"；

我正在做一个噩梦，试图将用户数据植入我的rails项目。我正在使用Nitrous.io，通过在控制台中键入以下内容，我可以设置一个新用户

rails console 

然后在控制台中执行以下命令

2.1.1 :001 > u = User.new                                                                                                                                                             
=> #<User id: nil, username: nil, email: nil, password_hash: nil, password_salt: nil, admin: nil, points: nil, leagues: nil>                                                         
2.1.1 :002 > u.username = 'testadmin'  
=> "testadmin"                                                                                                                                                                       
2.1.1 :003 > u.email = 'testAdmin@test.com'                                                                                                                                           
=> "testAdmin@test.com"                                                                                                                                                              
2.1.1 :004 > u.password = 'test'                                                                                                                                                      
=> "test" 
2.1.1 :005 > u.password_confirmation = 'test'                                                                                                                                         
=> "test"                                                                                                                                                                            
2.1.1 :006 > u.admin = true                                                                                                                                                           
=> true                                                                                                                                                                              
2.1.1 :007 > u.save  
   (86.8ms)  BEGIN                                                                                                                                                                    
User Exists (87.5ms)  SELECT  1 AS one FROM "users"  WHERE "users"."email" = 'testAdmin@test.com' LIMIT 1                                                                           
User Exists (86.6ms)  SELECT  1 AS one FROM "users"  WHERE "users"."username" = 'testadmin' LIMIT 1                                                                                 
SQL (91.7ms)  INSERT INTO "users" ("admin", "email", "password_hash", "password_salt", "username") VALUES ($1, $2, $3, $4, $5) RETURNING "id"  [["admin", "t"], ["email", "testAdmin @test.com"], ["password_hash", "$2a$10$tVMzM58wjt.lDG6dlsoLQe4obwYzLf3UfUc2ui6MD2eTGAgwTTaQK"], ["password_salt", "$2a$10$tVMzM58wjt.lDG6dlsoLQe"], ["username", "testadmin"]]        
(89.3ms)  COMMIT                                                                                                                                                                   
=> true                                                                                                                                                                              
2.1.1 :008 > Exit

 User.create ({username: 'testadmin2', email: 'testAdmin2@test.com', password: 'test', password_confirmation: 'test', admin: true})

然后在控制台中运行rake db:seed，但出现以下错误：

rake aborted!                                                                                                                                                                         
ArgumentError: wrong number of arguments (2 for 0..1)                                                                                                                                 
/home/action/workspace/PAW/app/models/user.rb:39:in `initialize'                                                                                                                      
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active_record/inheritance.rb:30:in `new'                                                                                
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active_record/inheritance.rb:30:in `new'                                                                                
/home/action/.rvm/gems/ruby-2.1.1/gems/protected_attributes-1.0.7/lib/active_record/mass_assignment_security/persistence.rb:45:in `create'                                            
/home/action/workspace/PAW/db/seeds.rb:8:in `<top (required)>'  
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:241:in `load'                                                                           
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:241:in `block in load'                                                                  
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:232:in `load_dependency'                                                                
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active_support/dependencies.rb:241:in `load'                                                                           
/home/action/.rvm/gems/ruby-2.1.1/gems/railties-4.1.0/lib/rails/engine.rb:543:in `load_seed'      
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active_record/tasks/database_tasks.rb:184:in `load_seed'                                                                
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active_record/railties/databases.rake:173:in `block (2 levels) in <top (required)>'                                     
Tasks: TOP => db:seed                                                                                                                                                                 
(See full trace by running task with --trace)   

rake中止！
ArgumentError:参数数目错误（2代表0..1）
/home/action/workspace/PAW/app/models/user.rb:39:in'initialize'
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active\u record/heritation.rb:30:in“new”
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active\u record/heritation.rb:30:in“new”
/home/action/.rvm/gems/ruby-2.1.1/gems/protected\u attributes-1.0.7/lib/active\u record/mass\u assignment\u security/persistence.rb:45:在“创建”中
/home/action/workspace/PAW/db/seeds.rb:8:in`'
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active\u support/dependencies.rb:241:in'load'
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active\u support/dependencies.rb:241:in'block in load'
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active\u support/dependencies.rb:232:in'load\u dependencity'
/home/action/.rvm/gems/ruby-2.1.1/gems/activesupport-4.1.0/lib/active\u support/dependencies.rb:241:in'load'
/home/action/.rvm/gems/ruby-2.1.1/gems/railties-4.1.0/lib/rails/engine.rb:543:in'load_seed'
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active\u record/tasks/database\u tasks.rb:184:in'load\u seed'
/home/action/.rvm/gems/ruby-2.1.1/gems/activerecord-4.1.0/lib/active\u record/railties/databases.rake:173:in `块（2层）in'
任务：TOP=>db:seed
（通过使用--trace运行任务查看完整跟踪）

我是ruby和rails的新手，所以我可能在做一些愚蠢的事情，但在过去的两个小时里我一直在做这些事情，我一点也不明白。我想像这样植入数据的原因是因为我想设置一些可以访问某些页面的管理员（所有这些都可以正常工作）。为此，我需要设置admin=true。如果我通过网站设置了新用户，我没有将用户设置为管理员的选项。我可以通过上面提到的控制台来做，但需要很长时间。播种会快得多，我也想知道我做错了什么。我将在下面给您一些其他代码。感谢您的关注（并希望提供帮助）

user.rb

class用户：create
验证是否存在：电子邮件，：on=>：创建
验证是否存在：username，：on=>：create
验证电子邮件的唯一性
验证用户名的唯一性
通过电子邮件（电子邮件、密码）进行自我验证
用户=通过电子邮件查找（电子邮件）
如果user&&user.password\u hash==BCrypt:：Engine.hash\u secret（密码，user.password\u salt）
用户
其他的
无
结束
结束
def self.authenticate_by_username（用户名、密码）
用户=通过用户名（用户名）查找
如果user&&user.password\u hash==BCrypt:：Engine.hash\u secret（密码，user.password\u salt）
用户
其他的
无
结束
结束
def加密密码
如果密码存在？
self.password\u salt=BCrypt:：Engine.generate\u salt
self.password\u hash=BCrypt:：Engine.hash\u secret（密码、密码）
结束
结束
def初始化（属性={}）
super#必须允许活动记录初始化！
attributes.each do |名称、值|
发送（“#{name}=”，值）
结束
结束
结束

身份验证\u controller.rb

class AuthenticationController“登录”
结束
结束
def已注销
会话[：用户\u id]=无
flash[：notice]=“您已注销。”
结束
定义n
  class User < ActiveRecord::Base
    attr_accessible :email, :username, :password, :password_confirmation
    attr_accessor :password
    before_save :encrypt_password

    validates_confirmation_of :password
    validates_presence_of :password, :on => :create
    validates_presence_of :email, :on => :create
    validates_presence_of :username, :on => :create
    validates_uniqueness_of :email
    validates_uniqueness_of :username

    def self.authenticate_by_email(email, password)
      user = find_by_email(email)
      if user && user.password_hash == BCrypt::Engine.hash_secret(password, user.password_salt)
        user
      else
        nil
      end
    end

    def self.authenticate_by_username(username, password)
      user = find_by_username(username)
      if user && user.password_hash == BCrypt::Engine.hash_secret(password, user.password_salt)
        user
      else
        nil
      end
    end

    def encrypt_password
      if password.present?
        self.password_salt = BCrypt::Engine.generate_salt
        self.password_hash = BCrypt::Engine.hash_secret(password, password_salt)
      end
    end

    def initialize(attributes = {})
      super # must allow the active record to initialize!
      attributes.each do |name, value|
        send("#{name}=", value)
      end
    end    
  end

  class AuthenticationController < ApplicationController
    def sign_in
      @user = User.new
    end

    def login
      username_or_email = params[:user][:username]
      password = params[:user][:password]

      if username_or_email.rindex('@')
        email=username_or_email
        user = User.authenticate_by_email(email, password)
      else
        username=username_or_email
        user = User.authenticate_by_username(username, password)
      end

      if user
        session[:user_id] = user.id
        flash[:notice] = 'Welcome' 
        redirect_to :root
      else
        flash.now[:error] = 'Unknown user. Please check your username and password.'

        # Assign user to instance variable for the `sign_in` view!
        @user = User.new(params[:user]) 

        render :action => "sign_in"
      end
    end

    def signed_out
      session[:user_id] = nil
      flash[:notice] = "You have been signed out."
    end

    def new_user
      @user = User.new
    end

    def register
      @user = User.new(params[:user])

      if @user.valid?
        @user.save
        session[:user_id] = @user.id
        flash[:notice] = 'Welcome.'
        redirect_to :root
      else
        render :action => "new_user"
      end
    end

  end

def initialize(attributes = {})
  super # must allow the active record to initialize!
  attributes.each do |name, value|
  send("#{name}=", value)
 end
end