rails/activerecord/test/models/company.rb

class AbstractCompany < ActiveRecord::Base
  self.abstract_class = true
end

class Company < AbstractCompany
  self.sequence_name = :companies_nonstd_seq

  validates_presence_of :name

  has_one :dummy_account, :foreign_key => "firm_id", :class_name => "Account"
  has_many :contracts
  has_many :developers, :through => :contracts

  scope :of_first_firm, lambda {
    joins(:account => :firm).
    where('firms.id' => 1)
  }

  def arbitrary_method
    "I am Jack's profound disappointment"
  end

  private

  def private_method
    "I am Jack's innermost fears and aspirations"
  end

  class SpecialCo < Company
  end
end

module Namespaced
  class Company < ::Company
  end

  class Firm < ::Company
    has_many :clients, :class_name => 'Namespaced::Client'
  end

  class Client < ::Company
  end
end

class Firm < Company
  to_param :name

  has_many :clients, -> { order "id" }, :dependent => :destroy, :before_remove => :log_before_remove, :after_remove  => :log_after_remove
  has_many :unsorted_clients, :class_name => "Client"
  has_many :unsorted_clients_with_symbol, :class_name => :Client
  has_many :clients_sorted_desc, -> { order "id DESC" }, :class_name => "Client"
  has_many :clients_of_firm, -> { order "id" }, :foreign_key => "client_of", :class_name => "Client", :inverse_of => :firm
  has_many :clients_ordered_by_name, -> { order "name" }, :class_name => "Client"
  has_many :unvalidated_clients_of_firm, :foreign_key => "client_of", :class_name => "Client", :validate => false
  has_many :dependent_clients_of_firm, -> { order "id" }, :foreign_key => "client_of", :class_name => "Client", :dependent => :destroy
  has_many :exclusively_dependent_clients_of_firm, -> { order "id" }, :foreign_key => "client_of", :class_name => "Client", :dependent => :delete_all
  has_many :limited_clients, -> { limit 1 }, :class_name => "Client"
  has_many :clients_with_interpolated_conditions, ->(firm) { where "rating > #{firm.rating}" }, :class_name => "Client"
  has_many :clients_like_ms, -> { where("name = 'Microsoft'").order("id") }, :class_name => "Client"
  has_many :clients_like_ms_with_hash_conditions, -> { where(:name => 'Microsoft').order("id") }, :class_name => "Client"
  has_many :plain_clients, :class_name => 'Client'
  has_many :clients_using_primary_key, :class_name => 'Client',
           :primary_key => 'name', :foreign_key => 'firm_name'
  has_many :clients_using_primary_key_with_delete_all, :class_name => 'Client',
           :primary_key => 'name', :foreign_key => 'firm_name', :dependent => :delete_all
  has_many :clients_grouped_by_firm_id, -> { group("firm_id").select("firm_id") }, :class_name => "Client"
  has_many :clients_grouped_by_name, -> { group("name").select("name") }, :class_name => "Client"

  has_one :account, :foreign_key => "firm_id", :dependent => :destroy, :validate => true
  has_one :unvalidated_account, :foreign_key => "firm_id", :class_name => 'Account', :validate => false
  has_one :account_with_select, -> { select("id, firm_id") }, :foreign_key => "firm_id", :class_name=>'Account'
  has_one :readonly_account, -> { readonly }, :foreign_key => "firm_id", :class_name => "Account"
  # added order by id as in fixtures there are two accounts for Rails Core
  # Oracle tests were failing because of that as the second fixture was selected
  has_one :account_using_primary_key, -> { order('id') }, :primary_key => "firm_id", :class_name => "Account"
  has_one :account_using_foreign_and_primary_keys, :foreign_key => "firm_name", :primary_key => "name", :class_name => "Account"
  has_one :account_with_inexistent_foreign_key, class_name: 'Account', foreign_key: "inexistent"
  has_one :deletable_account, :foreign_key => "firm_id", :class_name => "Account", :dependent => :delete

  has_one :account_limit_500_with_hash_conditions, -> { where :credit_limit => 500 }, :foreign_key => "firm_id", :class_name => "Account"

  has_one :unautosaved_account, :foreign_key => "firm_id", :class_name => 'Account', :autosave => false
  has_many :accounts
  has_many :unautosaved_accounts, :foreign_key => "firm_id", :class_name => 'Account', :autosave => false

  has_many :association_with_references, -> { references(:foo) }, :class_name => 'Client'

  has_one :lead_developer, class_name: "Developer"
  has_many :projects

  def log
    @log ||= []
  end

  private
    def log_before_remove(record)
      log << "before_remove#{record.id}"
    end

    def log_after_remove(record)
      log << "after_remove#{record.id}"
    end
end

class DependentFirm < Company
  has_one :account, :foreign_key => "firm_id", :dependent => :nullify
  has_many :companies, :foreign_key => 'client_of', :dependent => :nullify
  has_one :company, :foreign_key => 'client_of', :dependent => :nullify
end

class RestrictedWithExceptionFirm < Company
  has_one :account, -> { order("id") }, :foreign_key => "firm_id", :dependent => :restrict_with_exception
  has_many :companies, -> { order("id") }, :foreign_key => 'client_of', :dependent => :restrict_with_exception
end

class RestrictedWithErrorFirm < Company
  has_one :account, -> { order("id") }, :foreign_key => "firm_id", :dependent => :restrict_with_error
  has_many :companies, -> { order("id") }, :foreign_key => 'client_of', :dependent => :restrict_with_error
end

class Client < Company
  belongs_to :firm, :foreign_key => "client_of"
  belongs_to :firm_with_basic_id, :class_name => "Firm", :foreign_key => "firm_id"
  belongs_to :firm_with_select, -> { select("id") }, :class_name => "Firm", :foreign_key => "firm_id"
  belongs_to :firm_with_other_name, :class_name => "Firm", :foreign_key => "client_of"
  belongs_to :firm_with_condition, -> { where "1 = ?", 1 }, :class_name => "Firm", :foreign_key => "client_of"
  belongs_to :firm_with_primary_key, :class_name => "Firm", :primary_key => "name", :foreign_key => "firm_name"
  belongs_to :firm_with_primary_key_symbols, :class_name => "Firm", :primary_key => :name, :foreign_key => :firm_name
  belongs_to :readonly_firm, -> { readonly }, :class_name => "Firm", :foreign_key => "firm_id"
  belongs_to :bob_firm, -> { where :name => "Bob" }, :class_name => "Firm", :foreign_key => "client_of"
  has_many :accounts, :through => :firm, :source => :accounts
  belongs_to :account

  validate do
    firm
  end

  class RaisedOnSave < RuntimeError; end
  attr_accessor :raise_on_save
  before_save do
    raise RaisedOnSave if raise_on_save
  end

  class RaisedOnDestroy < RuntimeError; end
  attr_accessor :raise_on_destroy
  before_destroy do
    raise RaisedOnDestroy if raise_on_destroy
  end

  # Record destruction so we can test whether firm.clients.clear has
  # is calling client.destroy, deleting from the database, or setting
  # foreign keys to NULL.
  def self.destroyed_client_ids
    @destroyed_client_ids ||= Hash.new { |h,k| h[k] = [] }
  end

  before_destroy do |client|
    if client.firm
      Client.destroyed_client_ids[client.firm.id] << client.id
    end
    true
  end

  before_destroy :overwrite_to_raise

  # Used to test that read and question methods are not generated for these attributes
  def rating?
    query_attribute :rating
  end

  def overwrite_to_raise
  end

  class << self
    private

    def private_method
      "darkness"
    end
  end
end

class ExclusivelyDependentFirm < Company
  has_one :account, :foreign_key => "firm_id", :dependent => :delete
  has_many :dependent_sanitized_conditional_clients_of_firm, -> { order("id").where("name = 'BigShot Inc.'") }, :foreign_key => "client_of", :class_name => "Client", :dependent => :delete_all
  has_many :dependent_conditional_clients_of_firm, -> { order("id").where("name = ?", 'BigShot Inc.') }, :foreign_key => "client_of", :class_name => "Client", :dependent => :delete_all
end

class SpecialClient < Client
end

class VerySpecialClient < SpecialClient
end

class Account < ActiveRecord::Base
  belongs_to :firm, :class_name => 'Company'
  belongs_to :unautosaved_firm, :foreign_key => "firm_id", :class_name => "Firm", :autosave => false

  alias_attribute :available_credit, :credit_limit

  def self.destroyed_account_ids
    @destroyed_account_ids ||= Hash.new { |h,k| h[k] = [] }
  end

  # Test private kernel method through collection proxy using has_many.
  def self.open
    where('firm_name = ?', '37signals')
  end

  before_destroy do |account|
    if account.firm
      Account.destroyed_account_ids[account.firm.id] << account.id
    end
    true
  end

  validate :check_empty_credit_limit

  protected

  def check_empty_credit_limit
    errors.add("credit_limit", :blank) if credit_limit.blank?
  end

  private

  def private_method
    "Sir, yes sir!"
  end
end