应用部署到heroku不稳定

问题描述：

我有一个应用部署在使用postgres的heroku上。该应用程序不稳定...有时会起作用，有时会导致自定义500页错误。它给人的错误应用部署到heroku不稳定

代码：

def login 
    session[:user_id] = nil 
    if request.post? 
     if @user = User.authenticate(params[:user][:userid], params[:user][:password]) 
     session[:user_id] = @user.id 
       if @user.stores.length > 0 
      redirect_to(:controller => "admin", :action => "select_store") 
      else 
      redirect_to(:controller => "pages", :action => "mainpage") 
      end 
     else 
     flash.now[:notice] = "Invalid user/password combination" 
     end 
     end 
    end

我的模型看起来像：

def self.authenticate(userid, password) 
    user = self.find_by_userid_and_password(userid, password) 
    user 
    end

Heroku的日志说：

ActiveRecord::StatementInvalid (PGError: ERROR: current transaction is aborted, commands ignored until end of transaction block 
: SELECT * FROM "users" WHERE ("users"."userid" = E'sampleuser' AND "users"."password" = E'12345') LIMIT 1): 
    app/models/user.rb:7:in `authenticate' 
    app/controllers/admin_controller.rb:6:in `login'

，因为它是一个间歇性错误，我不知道如何解决它。但是，有可能在页面上显示错误吗？......是否有可能发现类似这样的错误，然后继续？这将是最好的解决办法

答

尽量让定制发现：

def self.authenticate(userid, password) 
    user = self.find(:first, :conditions => {:userid => userid, :password =>password}) 
    user 
    end

应用部署到heroku不稳定

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