Question

每当我尝试创建新用户时，都会收到一条错误消息，提示“密码不能留空”，但在提交前密码表单中有内容。

以下是 application.html.erb 中的表单：

  <div class="signup_form_div">
    <h1>Create an account!</h1>
    <%= form_for(:user, :url => {:controller => 'users', :action => 'create'}) do |f| %>
      <p class="text_fields">
        <%= f.text_field :first_name, placeholder: 'First Name' %>
        <%= f.text_field :last_name, placeholder: 'Last Name' %>
        <%= f.text_field :username, placeholder: 'Desired Username' %>
        <%= f.text_field :email, placeholder: 'Email Address' %>
        <%= f.password_field :password, placeholder: 'Password' %>
        <%= f.password_field :password_confirmation, placeholder: 'Confirm Password' %>
      </p>
      <p id="signup_submit">
        <%= f.submit :Signup, class: 'button'%>
      </p>
    <% end %>
  </div>

这是 users_controller.rb 文件：

  def new
    @user = User.new
  end

  def create
    @user = User.new( user_params )
    logger.debug user_params
    if @user.save 
      flash[:notice] = "You've signed up successfully"
      flash[:color] = "valid"
    else
      flash[:notice] = "Form is invalid"
      flash[:color] = "invalid"
    end
    render "new"
  end


  private
  def user_params
    params.require(:user).permit(:username, :email, :password, :password_confirmation, :first_name, :last_name)
  end

，这是 user.rb 模型文件的顶部：

  attr_accessor :password

  #validation of form input
  has_secure_password
  EMAIL_REGEX = /\A[^@\s]+@([^@.\s]+\.)+[^@.\s]+\z/
  validates :username, :presence => true, :uniqueness => true, :length => { :in => 3..20 }
  before_save { :email.downcase }
  validates :email, :presence => true, :uniqueness => { case_sensitive: false }, :format => EMAIL_REGEX
  validates_length_of :password, :in => 6..20, :on => :create

试图创建名为“John Doe”的用户，用户“jdoe”，电子邮件“jdoe@email.com”和密码“password1”的日志：

Started POST "/create" for 127.0.0.1 at 2014-05-17 13:22:58 -0400
Processing by UsersController#create as HTML
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"B+5wtiVRnM4kqFi5/MN8dTtSYkV+ppZXrM+7YekAMJw=", "user"=>{"first_name"=>"John", "last_name"=>"Doe", "username"=>"jdoe", "email"=>"jdoe1@email.com", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Signup"}
{"username"=>"jdoe", "email"=>"jdoe1@email.com", "password"=>"password1", "password_confirmation"=>"password1", "first_name"=>"John", "last_name"=>"Doe"}
  [1m[35m (0.3ms)[0m  BEGIN
  [1m[36mUser Exists (0.4ms)[0m  [1mSELECT  1 AS one FROM `users`  WHERE `users`.`username` = BINARY 'jdoe' LIMIT 1[0m
  [1m[35mUser Exists (0.2ms)[0m  SELECT  1 AS one FROM `users`  WHERE `users`.`email` = 'jdoe1@email.com' LIMIT 1
  [1m[36m (0.1ms)[0m  [1mROLLBACK[0m
  Rendered users/new.html.erb within layouts/application (2.4ms)
Completed 200 OK in 72ms (Views: 9.4ms | ActiveRecord: 3.8ms)

如果有任何其他文件需要帮助，请告诉我。感谢

Answer 1

您需要在表单中引用@user对象。

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

注意:user =＆gt; @user。根据{{1}}对象是新记录还是旧记录，rails还会知道是POST还是PUT，它可以通过调用{{1}上的@user来执行此操作对象。

Answer 2

除了需要@use标记中的form_for r（如上所示）外，表单本身也需要位于特定位置。

在你的问题中，你说的是application.html.erb中的表格，它不是正确的位置。

如果是新用户，则需要填写表单应用程序/视图/用户/ new.html.erb

控制器应该在 app/controllers/users_controller.rb（不是user_controller.rb）

你的config/routes.rb

也应该有类似的内容

resources :users

假设您正确设置了路由，那么当GET请求到达/ users / new时，它将被路由到users_controller.rb的新方法，这将创建用户的新实例然后进行可用于new.html.erb视图。

Rails说＆＃34;密码不能留空＆＃34;但密码输入了

2 个答案: