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Questions tagged associations

24 questions

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25
votes
5
answers

Rails Associations has_one Latest Record

ruby-on-rails activerecord associations
asked 2013-04-05T00:32:37.997
17
votes
3
answers

Rails - Custom html into simple_form label

ruby-on-rails associations simple-form
asked 2013-02-03T09:59:34.697
54
votes
8
answers

UML aggregation vs association

uml associations aggregation class-diagram
asked 2012-03-09T20:55:58.420
25
votes
4
answers

How to configure many to many relationship using entity framework fluent API

c# entity-framework-4.1 ef-code-first associations
asked 2012-01-19T13:58:04.947
14
votes
2
answers

Rails: ActiveRecord::HasManyThroughSourceAssociationNotFoundError: Could not find the source association(s)

ruby-on-rails ruby associations has-many-through
asked 2011-12-23T23:44:18.480
14
votes
4
answers

Rails: Why "has_many ..., :through => ..." association results in "NameError: uninitialized constant ..."

ruby-on-rails ruby-on-rails-3 associations has-many-through
asked 2011-08-12T12:25:38.480
13
votes
2
answers

Entity Framework, Code First, Update "one to many" relationship with independent associations

entity-framework associations code-first dbcontext
asked 2011-08-07T10:26:30.417
28
votes
5
answers

ActiveRecord: How can I clone nested associations?

ruby-on-rails ruby-on-rails-3 activerecord associations clone
asked 2011-07-15T19:03:09.567
45
votes
2
answers

Rails Associations - has_many => :through - but same model

ruby-on-rails associations has-many-through
asked 2011-07-02T19:34:01.820
43
votes
2
answers

Same Model for Two belongs_to Associations

ruby-on-rails-3 associations model-associations
asked 2011-03-14T04:34:37.260
11
votes
2
answers

Setting a :has_many :through association on a belongs_to association Ruby on Rails

ruby-on-rails ruby associations has-many-through belongs-to
asked 2010-10-05T13:37:52.200
9
votes
1
answers

Rails has_many :through and Setting Property on Join model

ruby-on-rails associations join
asked 2010-06-21T02:13:09.387
30
votes
4
answers

belongs_to with :class_name option fails

ruby-on-rails activerecord associations
asked 2010-04-21T16:45:05.353
154
votes
3
answers

Rails: Using build with a has_one association in rails

ruby-on-rails associations has-one database-relations
asked 2010-03-18T20:01:52.977
13
votes
3
answers

Does ActiveRecord save a belongs_to association when saving main object?

ruby-on-rails activerecord associations
asked 2010-02-09T18:22:50.120
19
votes
1
answers

How can I delete child objects when the parent is deleted in rails?

ruby-on-rails activerecord associations cascade
asked 2010-02-04T22:51:26.950
18
votes
1
answers

ActiveRecord::HasManyThroughAssociationNotFoundError in UserController#welcome

ruby-on-rails activerecord many-to-many associations has-many-through
asked 2010-01-31T00:46:25.640
19
votes
2
answers

Rails association for two foreign keys for the same table in one table

ruby-on-rails associations
asked 2009-12-11T13:31:13.783
125
votes
11
answers

How to create has_and_belongs_to_many associations in Factory girl

ruby-on-rails associations has-and-belongs-to-many factory-bot
asked 2009-09-27T20:17:35.547
43
votes
8
answers

Rails idiom to avoid duplicates in has_many :through

ruby-on-rails activerecord associations idioms
asked 2009-08-22T04:14:42.590
33
votes
2
answers

Hibernate unidirectional one to many association - why is a join table better?

hibernate one-to-many foreign-keys associations
asked 2009-08-20T16:03:32.657
595
votes
22
answers

What is the difference between association, aggregation and composition?

oop uml associations aggregation composition
asked 2009-05-20T02:47:49.813
210
votes
6
answers

What is causing this ActiveRecord::ReadOnlyRecord error?

ruby-on-rails ruby activerecord join associations
asked 2009-03-12T15:28:33.733
10
votes
1
answers

Problem with self-referential has_many :through associations in Rails

ruby-on-rails ruby activerecord associations
asked 2008-12-13T06:42:45.793