activerecord

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Rails/ActiveRecord: joining first association only

class Session has_many :events end class Event belongs_to :session # r开发者_StackOverfloweferrer column[详细]

2023-04-13 08:55 分类：问答
Why does ActiveRecord provide .delete_all and not .truncate?

It seems strange that I have to manually execute SQL to use the TRUNCATE command. Is there something bad about it that DHH is p开发者_StackOverflowrotecting me against?Using TRUNCATE on some databases[详细]

2023-04-13 07:30 分类：问答
Paperclip and ActiveRecord: search for objects with attached files

in Rails 2.3.6 I have a User model:开发者_StackOverflow class User < ActiveRecord::Base has_attached_file :avatar,[详细]

2023-04-13 07:25 分类：问答
Rails 3 has_many :through + join table conditions / scoping

I\'m working on an app that has the models User and Project, and User can be assigned to multiple Projects, via ProjectUser, with a role (e.g. Developer, Designer).[详细]

2023-04-13 05:53 分类：问答
Rails Associations Not working and not recognizing classes

I have a weird bug that just popped up with my rails app that I cannot figure out. I recently added a new association to an existing Model and now my previous associations do not want to work properly[详细]

2023-04-13 02:33 分类：问答
Rails: Getting column value from query

Seems like it should be able to look at a simple tutorial or find an aswer with a quick google, but I can\'t...[详细]

2023-04-13 02:16 分类：问答
Rails: Multiple models records list

How can I show recent added @post and @photos in one list? For examp开发者_JAVA百科le: post - LAlala (10.10.2011)[详细]

2023-04-13 01:29 分类：问答
rails active record associations sql behavior

I have 2 models: # models/car.rb class Car < ActiveRecord::Base belongs_to :model end and # models/m开发者_Go百科anufacturer.rb[详细]

2023-04-13 00:45 分类：问答
Rails 3 ActiveRecord Table Name Issue

I\'m on Windows XP... Ruby 1.9.2 Rails 3.0.9 MS SQL Server 2005 I\'m using tiny_tds + activerecord-sqlserver-adapter[详细]

2023-04-12 23:58 分类：问答
Log caller application stack trace together with each sql query

I have run into problem with hunting the roots of some sql queries in my project. To troubleshoot it i wanted to log application caller stack together with each query fired.[详细]

2023-04-12 22:44 分类：问答