無法重定向到零！ ActionController的:: ActionControllerError

Question

我有一個應用程序，其中： 1.用戶在頁面上查看他們的個人資料信息 2.用戶按下按鈕，通過此頁面 3.電子郵件後發送電子郵件的人發送，用戶發送回到查看他們的個人資料信息，並通知閃爍，告訴他們電子郵件是否工作。

我有沒有。 3.我不知道如何設置一個重定向（或別的情況而定），將發送用戶查看他們的個人資料信息再次

控制器：

class ProfilesController < ApplicationController 
    before_action :set_profile, only: [:show, :edit, :update, :destroy, :email] 

    # GET /profiles 
    # GET /profiles.json 
    def index 
    @profiles = Profile.all 
    end 

    # GET /profiles/1 
    # GET /profiles/1.json 
    def show 
    end 

    # GET /profiles/new 
    def new 
    @profile = Profile.new 
    end 

    # GET /profiles/1/edit 
    def edit 
    @profile = Profile.find_by user_id: current_user.id 
    end 

    # POST /profiles 
    # POST /profiles.json 
    def create 
    @profile = Profile.new(profile_params) 

    respond_to do |format| 
     if @profile.save 
     format.html { redirect_to @profile, notice: 'Profile was successfully created.' } 
     format.json { render :show, status: :created, location: @profile } 
     else 
     format.html { render :new } 
     format.json { render json: @profile.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    # PATCH/PUT /profiles/1 
    # PATCH/PUT /profiles/1.json 
    def update 
    respond_to do |format| 
     if @profile.update(profile_params) 
     format.html { redirect_to @profile, notice: 'Profile was successfully updated.' } 
     format.json { render :show, status: :ok, location: @profile } 
     else 
     format.html { render :edit } 
     format.json { render json: @profile.errors, status: :unprocessable_entity } 
     end 
    end 
    end 

    # DELETE /profiles/1 
    # DELETE /profiles/1.json 
    def destroy 
    @profile.destroy 
    respond_to do |format| 
     format.html { redirect_to profiles_url, notice: 'Profile was successfully destroyed.' } 
     format.json { head :no_content } 
    end 
    end 

    def email_profile 
    destination = params[:to] 
    share = Share.profile(@profile, destination) 
    if destination =~ /@/ && share.deliver 
     redirect_to @profile, notice: 'email sent' 
    else 
     redirect_to @profile, notice: 'email failed' 
    end 
    end 

    private 
    # Use callbacks to share common setup or constraints between actions. 
    def set_profile 
     @profile = Profile.find(params[:id]) 
    end 

    # Never trust parameters from the scary internet, only allow the white list through. 
    def profile_params 
     params.require(:profile).permit(:user_id, :first_name, :last_name, :dob, :email, :mobile, :address, :suburb, :postcode, :city, :state, :country) 
    end 
end 

分享梅勒：

class Share < ActionMailer::Base 
    default_url_options[:host] = "localhost:3000" 
    default from: "from@example.com" 

    def profile(profile, destination) 
    @profile = profile 
    mail(to: destination, subject: "sent you stuff") 
    end 
end 

當前出錯：

ActionController::ActionControllerError in ProfilesController#email_profile 
Cannot redirect to nil! 

我覺得它有什麼做的：不爲是p id參數稱職通過發送電子郵件後..但我是一個新手，所以我真的不知道我在說什麼..感謝任何指導，所以我可以解決這個問題，也更好地瞭解ROR :)

Answer 1

你可能首先需要找到@profile。我想像Profile.find(params[:profile_id])缺失。