Ruby on Rails：检查互联网连接是打开还是关闭？

Question

让我们的代码几行从控制器：现在

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当我在off方面，它告诉我的socket error（如预期）错误，但如果我做一个条件：

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 

如果你帮我，我会友好的。

Answer 1

我不喜欢你检查连接。正如你所说的，当没有连接到rails时，远程邮件服务器（或dns）的rails会抛出一个异常。所以你应该捕获这个异常并相应地处理它。

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