diff options
author | Jon Leighton <j@jonathanleighton.com> | 2011-02-01 22:56:04 +0000 |
---|---|---|
committer | Jon Leighton <j@jonathanleighton.com> | 2011-02-07 23:35:05 +0000 |
commit | 05bcb8cecc8573f28ad080839233b4bb9ace07be (patch) | |
tree | a5c2f2f164081c64b923eb1fa108d38b78b8d145 /activerecord/test/models | |
parent | d55406d2e991056b08f69eb68bcf9b17da807b6c (diff) | |
download | rails-05bcb8cecc8573f28ad080839233b4bb9ace07be.tar.gz rails-05bcb8cecc8573f28ad080839233b4bb9ace07be.tar.bz2 rails-05bcb8cecc8573f28ad080839233b4bb9ace07be.zip |
Support the :dependent option on has_many :through associations. For historical and practical reasons, :delete_all is the default deletion strategy employed by association.delete(*records), despite the fact that the default strategy is :nullify for regular has_many. Also, this only works at all if the source reflection is a belongs_to. For other situations, you should directly modify the through association.
Diffstat (limited to 'activerecord/test/models')
-rw-r--r-- | activerecord/test/models/person.rb | 27 | ||||
-rw-r--r-- | activerecord/test/models/reference.rb | 12 |
2 files changed, 38 insertions, 1 deletions
diff --git a/activerecord/test/models/person.rb b/activerecord/test/models/person.rb index bee89de042..a18b9e44df 100644 --- a/activerecord/test/models/person.rb +++ b/activerecord/test/models/person.rb @@ -6,10 +6,14 @@ class Person < ActiveRecord::Base has_many :references has_many :bad_references has_many :fixed_bad_references, :conditions => { :favourite => true }, :class_name => 'BadReference' - has_many :jobs, :through => :references has_one :favourite_reference, :class_name => 'Reference', :conditions => ['favourite=?', true] has_many :posts_with_comments_sorted_by_comment_id, :through => :readers, :source => :post, :include => :comments, :order => 'comments.id' + has_many :jobs, :through => :references + has_many :jobs_with_dependent_destroy, :source => :job, :through => :references, :dependent => :destroy + has_many :jobs_with_dependent_delete_all, :source => :job, :through => :references, :dependent => :delete_all + has_many :jobs_with_dependent_nullify, :source => :job, :through => :references, :dependent => :nullify + belongs_to :primary_contact, :class_name => 'Person' has_many :agents, :class_name => 'Person', :foreign_key => 'primary_contact_id' has_many :agents_of_agents, :through => :agents, :source => :agents @@ -18,3 +22,24 @@ class Person < ActiveRecord::Base scope :males, :conditions => { :gender => 'M' } scope :females, :conditions => { :gender => 'F' } end + +class PersonWithDependentDestroyJobs < ActiveRecord::Base + self.table_name = 'people' + + has_many :references, :foreign_key => :person_id + has_many :jobs, :source => :job, :through => :references, :dependent => :destroy +end + +class PersonWithDependentDeleteAllJobs < ActiveRecord::Base + self.table_name = 'people' + + has_many :references, :foreign_key => :person_id + has_many :jobs, :source => :job, :through => :references, :dependent => :delete_all +end + +class PersonWithDependentNullifyJobs < ActiveRecord::Base + self.table_name = 'people' + + has_many :references, :foreign_key => :person_id + has_many :jobs, :source => :job, :through => :references, :dependent => :nullify +end diff --git a/activerecord/test/models/reference.rb b/activerecord/test/models/reference.rb index 4a17c936f5..06c4f79ef3 100644 --- a/activerecord/test/models/reference.rb +++ b/activerecord/test/models/reference.rb @@ -1,6 +1,18 @@ class Reference < ActiveRecord::Base belongs_to :person belongs_to :job + + class << self + attr_accessor :make_comments + end + + before_destroy :make_comments + + def make_comments + if self.class.make_comments + person.update_attributes :comments => "Reference destroyed" + end + end end class BadReference < ActiveRecord::Base |