Question

在我的rails应用程序中，当存在关联时，我无法保存模型对象。我正在使用mongo作为db。简要说明：

我有一个模型对象，

@obj1 = User.create(name: "name1")

当我做@ obj1.save时，它运行正常。现在我加了一个关系说，

has_many :offices

然后我尝试用新条目保存相同的对象。

@obj1 = User.create(name: "name2")

我收到类似

的错误

 /gems/activesupport-3.2.9/lib/active_support/inflector/methods.rb:230:in `block in constantize'
 gems/activesupport-3.2.9/lib/active_support/inflector/methods.rb:229:in `each'

编辑：

完整错误跟踪：

NameError: uninitialized constant Office
            from /home/workspace/.rvm/gems/ruby-1.9.3-p286@cv_app/gems/activesupport-3.2.9/lib/active_support/inflector/methods.rb:230:in `block in constantize'
            from /home/workspace/.rvm/gems/ruby-1.9.3-p286@cv_app/gems/activesupport-3.2.9/lib/active_support/inflector/methods.rb:229:in `each'
            from /home/workspace/.rvm/gems/ruby-1.9.3-p286@cv_app/gems/activesupport-3.2.9/lib/active_support/inflector/methods.rb:229:in `constantize'
            from /home/workspace/.rvm/gems/ruby-1.9.3-p286@cv_app/gems/activesupport-3.2.9/lib/active_support/core_ext/string/inflections.rb:54:in `constantize'

Answer 1

在您的用户模型中

class User < ActiveRecord::Base
  has_many :offices 
end

在您的办公室模型中

class Office < ActiveRecord::Base
  belongs_to :user
end

现在，试试这个

@user = User.new
@user.name = "xyz"
@user.save

关系

@user = User.offices.build

Answer 2

检查办公室模型和表是否已创建。这两个被创建它不会给出这种错误。

存在关联时无法保存模型对象

2 个答案: