參數是丟失或爲空值：subscribeduser

The Error I Get 參數是丟失或爲空值：subscribeduser

我得到的錯誤，當我試圖通過轉換params.require(:subscribeduser).permit(:email)到params.permit(:email)創建一個新的subscribeduser，我有點「固定」的，但我覺得不舒服關於它。我如何正確擺脫這個錯誤？

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

這是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

來源

2016-07-29 Dotun Longe

閱讀，請發表您的看法，以及而params您得到的控制器在創建對象 –

上面清清楚楚地寫着：subscribeduser參數是缺少這樣的東西是不對您的形式 –

你可以看看日誌並找到打印參數的行嗎？你可以把它添加到問題？ –