如果找不到记录，Rails 如何重定向 [英] Rails how to redirect if record is not found

问题描述

如果未找到记录，我将尝试重定向.页面未重定向，我未找到错误记录.

I am trying to redirect if the record is not found. The page is not redirect and I get the error record not found.

我的控制器:

def index
@link = Link.find(params[:id])
respond_to do |format|
    if @link.blank?
    format.html { redirect_to(root_url, :notice => 'Record not found') }
    else
    format.html { render :action => "index" }
    end
end
end

推荐答案

我一直在做的是把这个放在方法的末尾:

What I've been doing is putting this at the end of the method:

rescue ActiveRecord::RecordNotFound
  redirect_to root_url, :flash => { :error => "Record not found." }

更好的是，把它作为你的控制器的 around_filter:

Even better, put it as an around_filter for your controller:

around_filter :catch_not_found

private

def catch_not_found
  yield
rescue ActiveRecord::RecordNotFound
  redirect_to root_url, :flash => { :error => "Record not found." }
end

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