本文介绍了Ruby Datamapper .count始终返回0的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
每当我尝试计算从datamapper返回的记录时,无论是否有用户,它总是返回0。
Whenever I try and count the returned records from datamapper it always returns as 0, whether there is a user or not.
User.count(:username=>params[:username]) class User include DataMapper::Resource property :id, Serial property :username, String, unique_index: true, required: true, length: 3..32 property :password, String, required: true, length: 5..64 property :email, String, unique_index: true, required: true, format: :email_address end推荐答案
可以在控制台中尝试 User.all(:username => params [:username])和然后为该ENV尝试
Can you try User.all(:username=>params[:username]) in console and then try
User.count(:username => params [:username])
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Ruby Datamapper .count始终返回0
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