英文: Eager loading with relations causes touch option not to work 问题 使用includes来预加载Active Record时,upd...
为什么在工厂中出现了”必须存在卡片”的错误?如何解决它?
英文: Why i am getting this error in Factory: must be exist card? how can i solved it? 问题 只要我创建一个 'pos...
如何解决在部署到Heroku时出现500状态的问题
英文: How to resolve 500 status when deploying to Heroku 问题 2023-02-15T20:31:47.060556+00:00 app[web.1...
Ruby on Rails ActiveRecord单表继承具有一个到超类的关联。
英文: Ruby on Rails ActiveRecord Single Table Inheritance has_one to superclass 问题 I have a Base class...
无法更新用户的 is_active 状态:user.update(is_active: true) 失败
英文: Can't update is_active on user: user.update(is_active: true) fails 问题 user.update(is_active:...
生成总数从种子? (ActiveRecord)
英文: Generating Total from Seeds? (ActiveRecord) 问题 Right now, I am learning ruby and activerecord, a...
Rails – 如何建模动态表单字段?
英文: Rails - How to Model Dynamic Form Fields? 问题 我有一个请求模型。请求有一个分类。我想要建立的是将一堆表单字段存储在数据库中。它们的类型、名称等。不同...
如何在Rails中使用ActiveRecord / PostgreSQL更新has_many记录的时间戳?
英文: How to update timestamps for has_many records in Rails with ActiveRecord / PostgreSQL? 问题 表关联:表A...
Rails many to many relations with has many through relationships
英文: Rails many to many relations with has many through relationships 问题 我有以下使用has_many :through关联的模型...
如何以可扩展的方式在数据库中作废(软删除)一条记录。
英文: How to void (soft delete) a record in database in a scalable fashion 问题 目前我有一个名为 units 的表,包含以下列:...
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