Question

当我尝试使用设计加载注册页面时收到此错误消息。我的迁移文件中有一个名称输入，所以我不确定no方法错误来自何处。

错误：

Devise中的NoMethodError :: Registrations #new 显示/Users/ericpark/rails_projects/bloccit-2/app/views/devise/registrations/new.html.erb第9行提出：

未定义的方法`name＆＃39;对于＃

对于页面new.html.erb

<h2>Sign up</h2>

<div class="row">
  <div class="col-md-8">
    <%= form_for(resource, as: resource_name, url: registration_path(resource_name)) do |f| %>
      <%= devise_error_messages! %>
      <div class="form-group">
        <%= f.label :name %>
        <%= f.text_field :name, autofocus: true, class: 'form-control', placeholder: "Enter name" %>
      </div>
      <div class="form-group">
        <%= f.label :email %>
        <%= f.email_field :email, class: 'form-control', placeholder: "Enter email" %>
      </div>
      <div class="form-group">
        <%= f.label :password %>
        <%= f.password_field :password, class: 'form-control', placeholder: "Enter password" %>
      </div>
      <div class="form-group">
        <%= f.label :password_confirmation %>
        <%= f.password_field :password_confirmation, class: 'form-control', placeholder: "Enter password confirmation" %>
      </div>
      <div class="form-group">
        <%= f.submit "Sign up", class: 'btn btn-success' %>
      </div>
      <div class="form-group">
        <%= render "devise/shared/links" %>
      </div>
    <% end %>
  </div>
</div>

应用程序控制器：

class ApplicationController < ActionController::Base
  # Prevent CSRF attacks by raising an exception.
  # For APIs, you may want to use :null_session instead.
  protect_from_forgery with: :exception

  before_action :configure_permitted_parameters, if: :devise_controller?

   protected

   def configure_permitted_parameters
     devise_parameter_sanitizer.for(:sign_up) << :name
   end
end

为用户迁移文件：

class DeviseCreateUsers < ActiveRecord::Migration
  def change
    create_table(:users) do |t|
      ## Database authenticatable
      t.string :name #Added by Bloc.io


      t.string :email,              null: false, default: ""
      t.string :encrypted_password, null: false, default: ""

      ## Recoverable
      t.string   :reset_password_token
      t.datetime :reset_password_sent_at

      ## Rememberable
      t.datetime :remember_created_at

      ## Trackable
      t.integer  :sign_in_count, default: 0, null: false
      t.datetime :current_sign_in_at
      t.datetime :last_sign_in_at
      t.string   :current_sign_in_ip
      t.string   :last_sign_in_ip

      ## Confirmable
      t.string   :confirmation_token
      t.datetime :confirmed_at
      t.datetime :confirmation_sent_at
      t.string   :unconfirmed_email # Only if using reconfirmable

      ## Lockable
      # t.integer  :failed_attempts, default: 0, null: false # Only if lock strategy is :failed_attempts
      # t.string   :unlock_token # Only if unlock strategy is :email or :both
      # t.datetime :locked_at


      t.timestamps
    end

    add_index :users, :email,                unique: true
    add_index :users, :reset_password_token, unique: true
    # add_index :users, :confirmation_token,   unique: true
    # add_index :users, :unlock_token,         unique: true
  end
end

Answer 1

出于某种原因，您的迁移部分将被忽略。因此，我们构建一个新的迁移来为users表添加名称。

在控制台中，运行：

rails g migration addNameToUsers name:string

然后运行

rake db:migrate

Answer 2

您是否可以使用rails控制台创建名称用户？如果你不能重置你的数据库（rake db：reset）。

名称方法错误，未定义的方法

2 个答案: