设计验证不工作Rails 4

Question

我正在使用自定义控制器来处理Devise操作。

class RegistrationsController < Devise::RegistrationsController 

    def new 
    @joining_group = params[:access_token] 
    session[:access_token] = params[:access_token] 
    super 
    end 

    def create 
    super 
    sign_in resource_name, resource # sign in the user so that the code below works 

    if params[:organization] # User is an admin and creates group 
     current_user.admin = true 
     new_group = Group.create(name: params[:organization], access_token: SecureRandom.hex) # add super secret token to group so other users can be invited to join 
     current_user.group = new_group 
     current_user.save! 
    else # user is joining vis a vis email invitation with access_token 
     current_user.group_id = Group.where(access_token: session[:access_token]).first.id 
     current_user.save! 
    end 
    end 

    def update 
    super 
    end 

    def group_params 
    params.require(:group).permit(:name) 
    end 
end 

然而，当我尝试创建一个新的用户我得到了我的浏览器下面的错误，当我有一个空的输入标签（如果所有的投入都充满了创作的作品就好了）：

NoMethodError in RegistrationsController#create 
undefined method `admin=' for nil:NilClass 
Extracted source (around line #12): 
10 super 
11 if params[:organization] # User is an admin and creates group 
12 current_user.admin = true 
13 new_group = Group.create(name: params[:organization], access_token: SecureRandom.hex) 
14 current_user.group = new_group 
15 current_user.save! 

在我的用户类中启用了validatable模块。我的注册/ new.html.erb的看法是这样：

<div class="logo"> 
    <h1>VitalTracker</h1> 
</div> 

<div class="registration_box"> 
    <% if @joining_group %> 
    <h2>Join Group</h2> 
    <% else %> 
    <h2>Create Account</h2> 
    <% end %> 

    <%= form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| %> 
    <%= devise_error_messages! %> 

    <div> 
     <%= f.email_field :email, :autofocus => true, placeholder: "Email", class: "registration_input" %> 
    </div> 

    <div> 
     <%= f.password_field :password, placeholder: "Password", class: "registration_input" %> 
    </div> 

    <div> 
     <%= f.password_field :password_confirmation, placeholder: "Confirm Password", class: "registration_input" %> 
    </div> 

    <div> 
     <%= f.text_field :name, placeholder: "Name", class: "registration_input" %> 
    </div> 

    <% unless @joining_group %> 
     <div> 
     <%= text_field_tag "organization", nil, placeholder: "Organization", class: "registration_input" %> 
     </div> 
    <% end %> 

    <div> 
     <%= f.submit "Create Account", class: "registration_btn large_btn" %> 
    </div> 
    <% end %> 

    <%= render "devise/shared/links" %> 
</div> 

服务器日志如下：

Started POST "/users" for 127.0.0.1 at 2014-02-22 16:05:56 -0500 
Processing by RegistrationsController#create as HTML 
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"eBTmAyknoi92qdbhiirlUfjjtbdOiD8jzYwp6ZE9dwI=", "user"=>{"email"=>"", "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]", "name"=>""}, "organization"=>"", "commit"=>"Create Account"} 
    (0.2ms) BEGIN 
    (0.2ms) ROLLBACK 
    Rendered devise/shared/_links.erb (0.3ms) 
    Rendered registrations/new.html.erb within layouts/application (3.8ms) 
    (0.2ms) BEGIN 
    SQL (0.7ms) INSERT INTO "users" ("created_at", "current_sign_in_at", "current_sign_in_ip", "last_sign_in_at", "last_sign_in_ip", "name", "sign_in_count", "updated_at") VALUES ($1, $2, $3, $4, $5, $6, $7, $8) RETURNING "id" [["created_at", Sat, 22 Feb 2014 21:05:56 UTC +00:00], ["current_sign_in_at", Sat, 22 Feb 2014 21:05:56 UTC +00:00], ["current_sign_in_ip", "127.0.0.1"], ["last_sign_in_at", Sat, 22 Feb 2014 21:05:56 UTC +00:00], ["last_sign_in_ip", "127.0.0.1"], ["name", ""], ["sign_in_count", 1], ["updated_at", Sat, 22 Feb 2014 21:05:56 UTC +00:00]] 
    (0.6ms) COMMIT 
    (0.2ms) BEGIN 
    SQL (0.6ms) INSERT INTO "groups" ("access_token", "created_at", "name", "updated_at") VALUES ($1, $2, $3, $4) RETURNING "id" [["access_token", "103ff607863b1f766d3cd1b23d1f57dd"], ["created_at", Sat, 22 Feb 2014 21:05:56 UTC +00:00], ["name", ""], ["updated_at", Sat, 22 Feb 2014 21:05:56 UTC +00:00]] 
    (0.4ms) COMMIT 
    (0.2ms) BEGIN 
    (0.2ms) ROLLBACK 
Completed 422 Unprocessable Entity in 94ms 

ActiveRecord::RecordInvalid (Validation failed: Email can't be blank): 
    app/controllers/registrations_controller.rb:17:in `create' 


    Rendered /Users/jonathantrope/.rvm/gems/ruby-2.0.0-p353@rails4/gems/actionpack-4.0.2/lib/action_dispatch/middleware/templates/rescues/_source.erb (0.8ms) 
    Rendered /Users/jonathantrope/.rvm/gems/ruby-2.0.0-p353@rails4/gems/actionpack-4.0.2/lib/action_dispatch/middleware/templates/rescues/_trace.erb (1.1ms) 
    Rendered /Users/jonathantrope/.rvm/gems/ruby-2.0.0-p353@rails4/gems/actionpack-4.0.2/lib/action_dispatch/middleware/templates/rescues/_request_and_response.erb (1.1ms) 
    Rendered /Users/jonathantrope/.rvm/gems/ruby-2.0.0-p353@rails4/gems/actionpack-4.0.2/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout (19.2ms) 

感谢。

Answer 1

如果您想使用current_user，请将before_filter :authenticate_user!添加到您的控制器。看看source的Devise::RegistrationsController我想你想用resource而不是current_user。

顺便说一句，创建一个基于params[:organization]管理员是一个坏主意。

Answer 2

current_user，因为没有人在签订的是无

你需要的东西是这样的：

def create 
    super 

    # sign in after registration 
    sign_in resource_name, resource 

    # then the rest of your code shuold be ok 
    if params[:organization] # User is an admin and creates group 
    current_user.admin = true 
    # etc 

Answer 3

的问题是由于调用current_user.save！这阻止无效创建错误消息按预期在设计图中显示。使用current_user.save修复它。