1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
class Project < ActiveRecord::Base
has_and_belongs_to_many :developers, :uniq => true
has_and_belongs_to_many :developers_named_david, :class_name => "Developer", :conditions => "name = 'David'", :uniq => true
has_and_belongs_to_many :salaried_developers, :class_name => "Developer", :conditions => "salary > 0"
has_and_belongs_to_many :developers_by_sql, :class_name => "Developer", :delete_sql => "DELETE FROM developers_projects WHERE project_id = \#{id} AND developer_id = \#{record.id}"
has_and_belongs_to_many :developers_with_callbacks, :class_name => "Developer", :before_add => Proc.new {|o, r| o.developers_log << "before_adding#{r.id}"},
:after_add => Proc.new {|o, r| o.developers_log << "after_adding#{r.id}"},
:before_remove => Proc.new {|o, r| o.developers_log << "before_removing#{r.id}"},
:after_remove => Proc.new {|o, r| o.developers_log << "after_removing#{r.id}"}
attr_accessor :developers_log
def after_initialize
@developers_log = []
end
end
class SpecialProject < Project
def hello_world
"hello there!"
end
end
|
