WebbРучной type cast в rails 4.2. До rails 4.2 я мог бы написать: ActiveRecord::ConnectionAdapters::Column.new(:dummy, nil, type.to_s).type_cast(value) чтобы тип кастился value к type , но сейчас что API вроде много изменилось. WebbPG错误,sql,ruby,ruby-on-rails-3,postgresql,activerecord,Sql,Ruby,Ruby On Rails 3,Postgresql,Activerecord,我正在尝试使用project.find(id)从project模型中查找项目,但它给了我ActiveRecord::StatementInvalid错误 完整跟踪- PG::Error: ERROR: prepared statement "a1" already exists : SELECT COUNT(*) FROM pg_class c LEFT JOIN …
Ruby on Rails Tutorial => Joins
WebbRuby on Rails ActiveRecord Query Interface Joins Fastest Entity Framework Extensions Bulk Insert Bulk Delete Bulk Update Bulk Merge Example # joins () allows you to join … Webb19 maj 2015 · I’m currently setting up a scope in my Rails model to be used by ActiveAdmin. The scope I want to build should find every Job that has a survey_date in … erythema lid
Sql ActiveRecord::语句无效。PG错误_Sql_Ruby_Ruby On Rails …
Webb1 jan. 2013 · How to make Active Record join return unique objects? I have a simple query need: Find a list of users who made an order since Jan 1, 2013. In SQL, it's a very simple … Webb我有一個RoR應用程序,經常通過個人查詢來訪問數據庫。 問題是每個查詢花費 毫秒,並且由於ActiveRecord正在生成的單個查詢的數量,一些控制器操作需要很長時間才能完成 … WebbYes, my problem was in my relationships. 是的,我的问题出在我的人际关系中。 in Result.rb i told that result belogs to question but it's false. 在Result.rb中,我告诉结果要提问,但这是错误的。 Now i have this relatioships: Result.rb: 现在我有这个关系:Result.rb: class Result < ActiveRecord::Base belongs_to :question belongs_to :phonecall end finger nails after acrylics