Question

我正在构建一个Ruby on Rails应用程序，其中researchers可以运行studies。

我希望在首次注册时为研究人员（用户）创建一个新的样本研究。这与db种子有点不同，因为它需要为这个特定用户动态创建研究，而不是整个数据库一次。

我正在将Devise用于用户帐户。

这有什么好方法？谢谢！

Answer 1

您可以通过覆盖 ~~Devise::RegistrationsController~~ Devise::InvitationsController来完成。

# feel free to call this class whatever you want.
class Users::InvitationsController < Devise::InvitationsController
  def create
    # the block is yielded after the resource has been saved
    # but before anything has been rendered.
    super do |user|
      if user.valid?
        user.studies.create(title: 'New study')
      end
    end 
  end
end

然后我们需要告诉Devise路由到我们的自定义控制器：

# config/routes.rb
devise_for :users, controllers: { 
  registrations: 'users/registrations',
  invitations: 'users/invitations'
}

如果要从控制器中提取创建过程，可以使用工厂方法或service object：

class Study < ActiveRecord::Base
  # ...
  def self.create_default(**kwargs)
    # the default options are merged with the keyword arguments
    attrs = {
      title: 'Foo',
      bar: 'Baz'
    }.merge(kwargs)
    study = scoped.build(attrs)
    # lets us pass a block just like .new and .create
    yield study if block_given?
    study
  end
end

# app/controllers/user/registrations_controller.rb
# ...
  def create
    # the block is yielded after the resource has been saved
    # but before anything has been rendered.
    super do |user|
      if user.valid?
        study = user.studies.create_default(baz: 'Something else')
        study.save
      end
    end 
  end

Answer 2

配置/ routes.rb中

devise_for :users, :controllers => { :sessions => "sessions" }

应用程序/控制器/ sessions_controller.rb

class SessionsController < Devise::SessionsController
  before_action :before_login, only: :create
  after_action :after_login, only: :create

  def before_login
  end

  def after_login
    if current_user.sign_in_count == 1
     User.studies.create(title: 'New study')
    end
  end
end

在Ruby on Rails上创建设计用户创建的示例数据

2 个答案: