Ruby on Rails：檢查互聯網連接是打開還是關閉？

Question

讓我們的代碼幾行從控制器：現在

class VendorsController < ApplicationController 
    def new 
    @vendor = Vendor.new 
    end 

    def create 
    @vendor = Vendor.new(params[:vendor]) 
    if @vendor.save 
     VendorMailer.registration_confirmation(@vendor).deliver 
     flash[:success] = "Vendor Added Successfully" 
     redirect_to amain_path 
    else 
     render 'new' 
    end 
    end 
end 

，在localhost當我在off方面，它告訴我的socket error（如預期）錯誤，但如果我做一個條件：

def create 
    @vendor = Vendor.new(params[:vendor]) 
    if @vendor.save 
    if (internet is connected) 
     flash[:success] = "Vendor Added Successfully mail have been send" 
     VendorMailer.registration_confirmation(@vendor).deliver 
     redirect_to amain_path 
    else 
     flash[:success] = "Vendor Added Successfully mail is not send" 
     redirect_to amain_path 
    end 
    else 
    render 'new' 
    end 
end 

如果你幫我，我會友好的。

Answer 1

我不喜歡你檢查連接。正如你所說的，當沒有連接到rails時，遠程郵件服務器（或dns）的rails會拋出一個異常。所以你應該捕獲這個異常並相應地處理它。

def create 
    @vendor = Vendor.new(params[:vendor]) 
    if @vendor.save 
    begin 
     VendorMailer.registration_confirmation(@vendor).deliver 
     flash[:success] = "Vendor Added Successfully" 
     redirect_to amain_path 
    rescue SocketError => e 
     flash[:success] = "Vendor Added Successfully mail is not send" 
     redirect_to amain_path 
    end 
    else 
    render 'new' 
    end 
end