has-one

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How do I force ActiveRecord to load a belongs_to-has_one relation through a JOIN instead of 2 queries?

I have the following models: User < ActiveRecord::Base belongs_to :person end Person < ActiveRecord::Base[详细]

2023-04-12 20:22 分类：问答
Optional or Conditional model associations in Rails

I have a user model. Users can have 1 of 3 roles: role1, role2, role3. This is represented by a \'role\' column in the user model.[详细]

2023-04-12 03:41 分类：问答
Rails 3 : Mass-assignment with ActiveAdmin and has_one

I am developing a rails application in which I have two models User and Client. User is backed by devise and is responsible for authentication and has_one Client which holds the client details for a g[详细]

2023-04-08 04:07 分类：问答
ActiveRecord and use of has_one & has_many

Consider this simple model, where a Project has one ProjectType and, naturally many Projects can be of that type.[详细]

2023-04-01 13:14 分类：问答
has_one :through => multiple

Both Attendment & Vouching: belongs_to :event belongs_to :account Therefore: 1 to 1 relationship between attendments and vouchings.[详细]

2023-03-26 07:21 分类：问答
validates_uniqueness_of field scoped to a has_one relationship

I have the following models: class Section < ActiveRecord::Base belongs_to :course has_one :term, :through => :course[详细]

2023-03-22 00:37 分类：问答
Rails: No route matches {:controller=>"settings", :action=>"edit"}

I have a has_one association between user and setting model. I have also SettingsController with edit and update actions. On front page I have a link to edit settings:[详细]

2023-03-18 20:37 分类：问答
rails has_one through a collection

I\'ll start by pasting the relevant code and then I\'ll explain later what I am trying to do class User < ActiveRecord::Base[详细]

2023-03-15 04:33 分类：问答
cakePHP hasOne relationship not auto completing dropdown field

I\'m trying to implement a hasone relationship between 2 models, but I can\'t have the \'add\' form autocomplete with the possible options in the second model (the one that belongsTo the first one). T[详细]

2023-03-14 15:46 分类：问答
Rails has_many :through and has_one :through associations

First I\'m using Rails 3.1 from the 3-1-stable branch updated an hour ago. I\'m developing an application where I have 3 essential models User, Company and Job, Here\'s the relevant part of the model[详细]

2023-03-14 09:56 分类：问答