mirror of
https://github.com/rails/rails.git
synced 2022-11-09 12:12:34 -05:00
7e76740d2a
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4206 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
52 lines
1.6 KiB
Ruby
52 lines
1.6 KiB
Ruby
module DeveloperProjectsAssociationExtension
|
|
def find_most_recent
|
|
find(:first, :order => "id DESC")
|
|
end
|
|
end
|
|
|
|
module DeveloperProjectsAssociationExtension2
|
|
def find_least_recent
|
|
find(:first, :order => "id ASC")
|
|
end
|
|
end
|
|
|
|
class Developer < ActiveRecord::Base
|
|
has_and_belongs_to_many :projects do
|
|
def find_most_recent
|
|
find(:first, :order => "id DESC")
|
|
end
|
|
end
|
|
|
|
has_and_belongs_to_many :projects_extended_by_name,
|
|
:class_name => "Project",
|
|
:join_table => "developers_projects",
|
|
:association_foreign_key => "project_id",
|
|
:extend => DeveloperProjectsAssociationExtension
|
|
|
|
has_and_belongs_to_many :projects_extended_by_name_twice,
|
|
:class_name => "Project",
|
|
:join_table => "developers_projects",
|
|
:association_foreign_key => "project_id",
|
|
:extend => [DeveloperProjectsAssociationExtension, DeveloperProjectsAssociationExtension2]
|
|
|
|
has_and_belongs_to_many :special_projects, :join_table => 'developers_projects', :association_foreign_key => 'project_id'
|
|
|
|
validates_inclusion_of :salary, :in => 50000..200000
|
|
validates_length_of :name, :within => 3..20
|
|
end
|
|
|
|
DeveloperSalary = Struct.new(:amount)
|
|
class DeveloperWithAggregate < ActiveRecord::Base
|
|
self.table_name = 'developers'
|
|
composed_of :salary, :class_name => 'DeveloperSalary', :mapping => [%w(salary amount)]
|
|
end
|
|
|
|
class DeveloperWithBeforeDestroyRaise < ActiveRecord::Base
|
|
self.table_name = 'developers'
|
|
has_and_belongs_to_many :projects, :join_table => 'developers_projects', :foreign_key => 'developer_id'
|
|
before_destroy :raise_if_projects_empty!
|
|
|
|
def raise_if_projects_empty!
|
|
raise if projects.empty?
|
|
end
|
|
end
|