Rails：未定义方法'（MODELNAME）'？

Question

嗨我目前正在上传图片的Web应用程序。有用户，相册和照片。在尝试编辑用户个人资料信息时，我无法弄清楚发生了什么。它告诉我，UsersController＃更新中有一个未定义的方法“专辑”NoMethodError，但我甚至不会在我的#update操作中调用专辑。

def update 
    respond_to do |format| 
    if current_user.update_attributes(params[:user]) 
     format.html { redirect_to current_user, notice: 'User successfully updated.'} 
     format.json { render json: current_user, status: :created, location: current_user } 
    else 
     format.html { render action: 'edit' } 
     format.json { render json: current_user.errors, status: :unprocessable_entity } 
    end 
    end 
end 

该错误特别在我的更新操作的第2和第3行。这里的错误：

app/controllers/users_controller.rb:45:in 'block in update'

app/controllers/users_controller.rb:44:in update'`

人知道究竟发生了什么事？为用户

<%= form_for(@user) do |f| %> 

<div class="formhold"> 
<div class="field"> 
    <% if @user.profilepic? %> 
    <%= image_tag @user.profilepic.url %> 
    <% end %> 

    <%= f.label :profilepic, "Profile Picture" %> 
    <%= f.file_field :profilepic %> 
</div> 
<div class="field"> 
    <%= f.label :name %> 
    <%= f.text_field :name %> 
</div> 
<div class="field"> 
    <%= f.label :email %> 
    <%= f.text_field :email %> 
</div> 

<div> 
    <%= f.submit 'Submit', :class => 'submitbutton' %> 
</div> 



<% if @user.errors.any? %> 
    <div id="error_exp"> 
     <h2><%= pluralize(@user.errors.count, "error") %> occurred.</h2> 

     <ul> 
     <% @user.errors.full_messages.each do |msg| %> 
      <li><%= msg %></li> 
     <% end %> 
     </ul> 
    </div> 

    </div> 
<% end %> 
<% end %> 



<%= link_to "Back", user_path(@user) %> 

用户模型

class User < ActiveRecord::Base 

has_secure_password 
attr_accessible :email, :name, :password, :password_confirmation, :profilepic 
validates_presence_of :password, :on => :create 

validates_format_of :name, :with => /[A-Za-z]+/, :on => :create 
validates_format_of :email, :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i, :on => :create 
validates_length_of :password, :minimum => 5, :on => :create 
validates :album, :uniqueness => true 

has_many :album_users 
has_many :albums, :through => :album_users 
accepts_nested_attributes_for :albums 

has_many :friendships, :dependent => :destroy 
has_many :friends, :through => :friendships, :conditions => "status = 'accepted'" 
has_many :requested_friends, :through => :friendships, :source => :friend, :conditions => "status = 'requested'", :order => :created_at 
has_many :pending_friends, :through => :friendships, :source => :friend, :conditions => "status = 'pending'", :order => :created_at 

has_attached_file :profilepic 

before_save { |user| user.email = email.downcase } 

def name_with_initial 
    "#{name}" 
end 

private 

    def create_remember_token 
    self.remember_token = SecureRandom.urlsafe_base64 
    end 

端

Answer 1

编辑形式尝试注释出：

validates :album, :uniqueness => true 

据假设：专辑是一个属性/用户方法和f生病。您应该根据您的业务逻辑处理专辑模型中专辑的唯一验证。你可以根据user_id或其他一些属性来验证它们:scope => [:user_id]