client_company.rb

class ClientCompany < ActiveRecord::Base
	belongs_to :company
	belongs_to :service_company
	has_many :client_users, :dependent => :destroy
	has_many :users, :through => :client_users
	end
	# == Schema Information
#
# Table name: client_users
#
#  id                :integer          not null, primary key
#  client_company_id :integer
#  user_id           :integer
#  created_at        :datetime
#  updated_at        :datetime
#

client_user.rb

class ClientUser < ActiveRecord::Base
	belongs_to :user, :dependent => :destroy
	belongs_to :client_company
	has_one :company, :through => :client_company
end

# == Schema Information
#
# Table name: client_users
#
#  id                :integer          not null, primary key
#  client_company_id :integer
#  user_id           :integer
#  created_at        :datetime
#  updated_at        :datetime
#

company.rb

class Company < ActiveRecord::Base
	has_one :service_company, :dependent => :destroy
	has_one :client_company, :dependent => :destroy

  has_many :client_users, :through => :client_company
  has_many :users, :through => :client_users

	has_many :service_users, :through => :service_company
  has_many :users, :through => :service_users
end

# == Schema Information
#
# Table name: companies
#
#  id                 :integer          not null, primary key
#  name               :string(255)
#  address            :string(255)
#  city               :string(255)
#  state              :string(255)
#  country            :string(255)
#  phone              :string(255)
#  created_at         :datetime
#  updated_at         :datetime
#  photo_file_name    :string(255)
#  photo_content_type :string(255)
#  photo_file_size    :integer
#  photo_updated_at   :datetime
#

project_controller.rb

def show

    if current_user.service_user
      @project = current_user.service_user.projects.find(params[:id])
    else
      @project = current_user.client_user.projects.find(params[:id])
    end
  end

service_company.rb

class ServiceCompany < ActiveRecord::Base
	belongs_to :company
	has_many :service_users, :dependent => :destroy
	has_many :client_users, :through => :client_companies, :dependent => :destroy
	has_many :users, :through => :service_users
	has_many :client_companies, :dependent => :destroy
end

# == Schema Information
#
# Table name: service_companies
#
#  id             :integer          not null, primary key
#  company_id     :integer
#  week_start_day :integer
#  created_at     :datetime
#  updated_at     :datetime
#

service_user.rb

class ServiceUser < ActiveRecord::Base
  belongs_to :user, :dependent => :destroy
  belongs_to :service_company
  has_one :company, :through => :service_company
end
# == Schema Information
#
# Table name: service_users
#
#  id                 :integer          not null, primary key
#  service_company_id :integer
#  user_id            :integer
#  created_at         :datetime
#  updated_at         :datetime
#

user.rb

class User < ActiveRecord::Base
  has_one :client_user
  has_one :client_company, :through => :client_user
  has_one :service_user
  has_one :service_company, :through => :service_user
  belongs_to :company
end



# == Schema Information
#
# Table name: users
#
#  id                      :integer          not null, primary key
#  email                   :string(255)      default(""), not null
#  username                :string(255)      default(""), not null
#  encrypted_password      :string(255)      default(""), not null
#  reset_password_token    :string(255)
#  reset_password_sent_at  :datetime
#  remember_created_at     :datetime
#  sign_in_count           :integer          default(0), not null
#  current_sign_in_at      :datetime
#  last_sign_in_at         :datetime
#  current_sign_in_ip      :string(255)
#  last_sign_in_ip         :string(255)
#  role                    :string(255)      not null
#  created_at              :datetime
#  updated_at              :datetime
#  first_name              :string(255)
#  last_name               :string(255)
#  attachment_file_name    :string(255)
#  attachment_content_type :string(255)
#  attachment_file_size    :integer
#  attachment_updated_at   :datetime
#  last_active_at          :datetime
#  banned                  :boolean          default(FALSE)
#