belongs-to

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Ruby on Rails - has one and belongs to many relationship

This question is related to ruby on rails ActiveRecord associations and how to generate those migrations.[详细]

2023-01-09 04:13 分类：问答
belongs_to has_one associated record saving

If i have class User < ActiveRecord::Base has_many :books end . class Book < ActiveRecord::Base belongs_to :user[详细]

2023-01-09 02:35 分类：问答
Rails: Non id foreign key lookup ActiveRecord

I want ActiveRecord to lookup by a non-id column from a table. Hope this is clear when I give you my code sample.[详细]

2023-01-08 07:57 分类：问答
ActiveRecord relations when model has both one and many of the same model

My data resembles this: class Team < ActiveRecord::Base has_many :persons has_one :leader end class Person < ActiveRecord::Base[详细]

2023-01-07 22:05 分类：问答
Containable behavior does not return from depth 3 - CakePHP

I use CakePHP 1.2.6 and have the following relations: Showcase HABTM User belongsTo Galleryitem hasOne Image[详细]

2023-01-07 17:58 分类：问答
In Rails, how can I retrieve the object on a belongs_to association, without going through the database?

Consider the following setup: class Parent < ActiveRecord::Base has_many开发者_开发技巧 :children[详细]

2023-01-05 03:00 分类：问答
has_many, belongs_to association where has_many associated model has two alias fk in belongs_to associated_model

I have a User model that has many fights.Fight belongs to User. There are two foreign keys in the fight table that reference back to the user PK -- challenger_id and challengee_id.[详细]

2023-01-04 05:07 分类：问答
Let a question always :include its author, how?

class Question < ActiveRecord::Base belongs_to :author end class Author < ActiveRecord::Base has_many :questions[详细]

2023-01-03 04:10 分类：问答
How do I add and remove multiple "belongs_to" instances to and from a "has_many" instance?

I currently have two models: Campaigns and Videos. Videos belongs to Campaigns and a Campaign has many Videos. In my Campaign form I want to be able to add Videos that have no parent and also be able[详细]

2022-12-31 13:46 分类：问答
Validate a belongs to association in a build situation

I have a Mission model that has_many Task, and the Task belongs_to Mission For security I\'ve made this validation on the Task Model:[详细]

2022-12-25 13:18 分类：问答

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belongs-to

Ruby on Rails - has one and belongs to many relationship

belongs_to has_one associated record saving

Rails: Non id foreign key lookup ActiveRecord

ActiveRecord relations when model has both one and many of the same model

Containable behavior does not return from depth 3 - CakePHP

In Rails, how can I retrieve the object on a belongs_to association, without going through the database?

has_many, belongs_to association where has_many associated model has two alias fk in belongs_to associated_model

Let a question always :include its author, how?

How do I add and remove multiple "belongs_to" instances to and from a "has_many" instance?

Validate a belongs to association in a build situation

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