参数是丢失或为空值：subscribeduser

The Error I Get 参数是丢失或为空值：subscribeduser

我得到的错误，当我试图通过转换params.require(:subscribeduser).permit(:email)到params.permit(:email)创建一个新的subscribeduser，我有点“固定”的，但我觉得不舒服关于它。我如何正确摆脱这个错误？

SubscribedusersController

class SubscribedusersController < ApplicationController 
    before_action :set_subscribeduser, only: [:show, :edit, :update, :destroy] 

    def index 
    @subscribedusers = Subscribeduser.all 
    end 

    def new 
    @subscribeduser = Subscribeduser.new 
    end 

    def create 
    @subscribeduser = Subscribeduser.new(subscribeduser_params) 

    respond_to do |format| 
     if @subscribeduser.save 
     RegistrationMailer.thankyou_mail(@subscribeduser).deliver_now 
     format.html { redirect_to @subscribeduser, notice: 'Subscribeduser was successfully created.' } 
     format.json { render :show, status: :created, location: @subscribeduser } 
     else 
     format.html { render :new } 
     format.json { render json: @subscribeduser.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    def subscribeduser_params 
    params.require(:subscribeduser).permit(:email) 
    end 
end

这是Subscribeduser形式

<%= form_for(subscribeduser,:html => {:id => 'signup-form' }) do |f| %> 

    <div class="field"> 
    <%= f.text_field :email, :name =>"email", :id => "signup-form", "placeholder" => "Email Address" %> 
    </div> 

    <div class="actions"> 
    <%= f.submit "Sign Up!" %> 
    </div> 
<% end %>

This Is What My Console Shows

来源

2016-07-29 Dotun Longe

阅读，请发表您的看法，以及而params您得到的控制器在创建对象 –

上面清清楚楚地写着：subscribeduser参数是缺少这样的东西是不对您的形式 –

你可以看看日志并找到打印参数的行吗？你可以把它添加到问题？ –