Ruby on rails rails控制器中的扩展方法

这可能是非常规的，但是否可以扩展控制器中的任何has\u one方法，例如

association=（associate）

。我已经在模型中看到了这一点，但是否可以在控制器中实现？如果是，如何实现

解释一下我的意思

从

关联方法是在模型类中包含的模块中生成的，该模块允许您轻松地使用自己的方法进行重写，并使用super调用原始生成的方法。例如：

class Car < ActiveRecord::Base
 belongs_to :owner
 belongs_to :old_owner
 def owner=(new_owner)
   self.old_owner = self.owner
   super
  end
end

控制对关联的访问的代理对象可以通过匿名模块进行扩展。这对于添加新的查找者、创建者和其他仅作为此关联的一部分使用的工厂类型方法尤其有益

    class Account < ActiveRecord::Base
     has_many :people do
       def find_or_create_by_name(name)
         first_name, last_name = name.split(" ", 2)
         find_or_create_by(first_name: first_name, last_name: last_name)
       end
     end
    end

person = Account.first.people.find_or_create_by_name("David Heinemeier Hansson")
person.first_name # => "David"
person.last_name  # => "Heinemeier Hansson"

用户模型

class User < ActiveRecord::Base
  has_one :profile
  has_many :teammates, :class_name => "User", :foreign_key => "captain_id"
  belongs_to :captain, :class_name => "User"

  # before_create :build_profile
  after_create :build_default_profile

  accepts_nested_attributes_for :profile
  attr_accessible :email, :password, :password_confirmation, :profile_attributes

  def build_default_profile
    Profile.create(user_id: self.id)
  end

class用户“User”，：foreign\u key=>“captain\u id”
属于：船长，：class\u name=>“用户”
#创建前：生成配置文件
创建后：生成默认配置文件
接受\u嵌套的\u属性\u:profile
属性可访问：电子邮件、：密码、：密码\u确认、：配置文件\u属性
def生成默认配置文件
Profile.create（用户标识：self.id）
终止

结束

团队控制员

class TeamsController < ApplicationController

def new
  @team = Team.new
end 

def create
  @team = Team.new(params[:team])
  if @team.save!
   flash[:success] = "Team created."
   redirect_to @team
  else
   flash[:error_messages]
   render 'new'
  end
 end

def index
 @teams = Team.paginate(page: params[:page])
end

def show
 @team = Team.find(params[:id])
end

def edit
 @team = Team.find(params[:id])
end

def update
  @team = Team.find(params[:id])
  if @team.update_attributes(params[:team])
   flash[:success] = "Team Updated"
   redirect_to @team
  else
   render 'edit'
  end
 end

def destroy
  Team.find(params[:id]).destroy
  flash[:success] = "Team is deleted."
  redirect_to teams_url
 end


 private

  def team_params
    params.require(:team).permit(:teamname, :color)
  end

end

class teamscocontroller

您的问题不清楚。控制器没有关联，它们是控制器。那么你到底想做什么呢？我正试图利用控制器模型中的has_-one关联的扩展功能。你能展示你的has_-one关联模型吗？你想在控制器中实现什么？@dgilperez，我已经添加了相关的模型。

  attr_accessible :teamname, :color, :result_attributes

  after_create :build_result_table
  after_create :build_default_captain

   accepts_nested_attributes_for :profiles
   accepts_nested_attributes_for :captain
   accepts_nested_attributes_for :result

  def build_result_table
    Result.create(result_table_id: self.id, result_table_type: self.class.name)
  end

  def build_default_captain
    captain.create(team_id: self.id)
  end

end

class User < ActiveRecord::Base
  has_one :profile
  has_many :teammates, :class_name => "User", :foreign_key => "captain_id"
  belongs_to :captain, :class_name => "User"

  # before_create :build_profile
  after_create :build_default_profile

  accepts_nested_attributes_for :profile
  attr_accessible :email, :password, :password_confirmation, :profile_attributes

  def build_default_profile
    Profile.create(user_id: self.id)
  end

class TeamsController < ApplicationController

def new
  @team = Team.new
end 

def create
  @team = Team.new(params[:team])
  if @team.save!
   flash[:success] = "Team created."
   redirect_to @team
  else
   flash[:error_messages]
   render 'new'
  end
 end

def index
 @teams = Team.paginate(page: params[:page])
end

def show
 @team = Team.find(params[:id])
end

def edit
 @team = Team.find(params[:id])
end

def update
  @team = Team.find(params[:id])
  if @team.update_attributes(params[:team])
   flash[:success] = "Team Updated"
   redirect_to @team
  else
   render 'edit'
  end
 end

def destroy
  Team.find(params[:id]).destroy
  flash[:success] = "Team is deleted."
  redirect_to teams_url
 end


 private

  def team_params
    params.require(:team).permit(:teamname, :color)
  end

end