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class Author < ActiveRecord::Base
has_many :posts
has_many :posts_with_comments, :include => :comments, :class_name => "Post"
has_many :posts_with_categories, :include => :categories, :class_name => "Post"
has_many :posts_with_comments_and_categories, :include => [ :comments, :categories ], :order => "posts.id", :class_name => "Post"
has_many :comments, :through => :posts
has_many :funky_comments, :through => :posts, :source => :comments
has_many :special_posts, :class_name => "Post"
has_many :hello_posts, :class_name => "Post", :conditions=>"\#{aliased_table_name}.body = 'hello'"
has_many :nonexistent_posts, :class_name => "Post", :conditions=>"\#{aliased_table_name}.body = 'nonexistent'"
has_many :posts_with_callbacks, :class_name => "Post", :before_add => :log_before_adding,
:after_add => :log_after_adding,
:before_remove => :log_before_removing,
:after_remove => :log_after_removing
has_many :posts_with_proc_callbacks, :class_name => "Post",
:before_add => Proc.new {|o, r| o.post_log << "before_adding#{r.id}"},
:after_add => Proc.new {|o, r| o.post_log << "after_adding#{r.id}"},
:before_remove => Proc.new {|o, r| o.post_log << "before_removing#{r.id}"},
:after_remove => Proc.new {|o, r| o.post_log << "after_removing#{r.id}"}
has_many :posts_with_multiple_callbacks, :class_name => "Post",
:before_add => [:log_before_adding, Proc.new {|o, r| o.post_log << "before_adding_proc#{r.id}"}],
:after_add => [:log_after_adding, Proc.new {|o, r| o.post_log << "after_adding_proc#{r.id}"}]
has_many :unchangable_posts, :class_name => "Post", :before_add => :raise_exception, :after_add => :log_after_adding
has_many :categorizations
has_many :categories, :through => :categorizations
has_many :nothings, :through => :kateggorisatons, :class_name => 'Category'
has_many :author_favorites
has_many :favorite_authors, :through => :author_favorites, :order => 'name'
has_many :tagging, :through => :posts # through polymorphic has_one
has_many :taggings, :through => :posts, :source => :taggings # through polymorphic has_many
has_many :tags, :through => :posts # through has_many :through
has_many :post_categories, :through => :posts, :source => :categories
belongs_to :author_address
attr_accessor :post_log
def after_initialize
@post_log = []
end
private
def log_before_adding(object)
@post_log << "before_adding#{object.id}"
end
def log_after_adding(object)
@post_log << "after_adding#{object.id}"
end
def log_before_removing(object)
@post_log << "before_removing#{object.id}"
end
def log_after_removing(object)
@post_log << "after_removing#{object.id}"
end
def raise_exception(object)
raise Exception.new("You can't add a post")
end
end
class AuthorAddress < ActiveRecord::Base
has_one :author
end
class AuthorFavorite < ActiveRecord::Base
belongs_to :author
belongs_to :favorite_author, :class_name => "Author", :foreign_key => 'favorite_author_id'
end
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