mongoid唯一性驗證許多一對多關係

Question

我有以下的關聯

class Employee 
    include Mongoid::Document 
    employee_id :name 
references_many :companies, stored_as => :array, :inverse_of => :employees 
end 

class Company 
    include Mongoid::Document 
    field :name 
references_many :employees, stored_as => :array, :inverse_of => :companies 
end 

現在我如何檢查在一個單一company

Answer 1

嘿加甘的員工的employee_id唯一性。首先，這條線在你的員工的模型需要加以糾正：

employee_id :name

爲了驗證，你應該能夠做到這一點：

class Employee 
    include Mongoid::Document 

    field :employee_id, :type => Integer 

    references_many :companies, :stored_as => :array, :inverse_of => :employees 

    validates_uniqueness_of :employee_id 
end

您可以輕鬆地測試它像這樣：

>> e = Employee.create :employee_id => 10 
=> # 

>> Employee.new(:employee_id => 10).valid? 
=> false