'associations' Questions - SpiceQA

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associations

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Rails idiom to avoid duplicates in has_many :through

user_1611830

• asked Aug 22, 2009

42

8

12635

idioms associations activerecord ruby-on-rails

How do I remove a single HABTM associated item without deleting the item itself?

user_1190130

• asked Jul 7, 2009

41

2

21944

has-and-belongs-to-many associations ruby-on-rails

What is the difference between association, aggregation and composition?

Admin1

• asked May 20, 2009

519

20

438421

composition aggregation uml associations oop

What is causing this ActiveRecord::ReadOnlyRecord error?

user_262700

• asked Mar 12, 2009

208

6

70758

join associations activerecord ruby-on-rails ruby

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