Ruby on rails Rails多对多模型，添加记录

你好，我正在尝试用这个模型向我的数据库添加一些记录

class Colleagueship < ActiveRecord::Base
  belongs_to :employee
  belongs_to :colleague, :class_name => 'Employee'
end

class Employee < ActiveRecord::Base      
  has_many :colleagueships
  has_many :colleagues, :through => :colleagueships
  # ...
end

你觉得怎么样？如何使用post http方法实现这一点？我是否必须将employee变量与请求一起保存，并在那里添加employee\u id？

在控制器中

def new
end

def create
  # inspect submitted params here
  puts params

  if colleagueship.save
    # etc etc
  else
    # error
  end
end

private

def employee
  @employee = Employee.find_by(params[:employee_id])
end

def colleagueship
  @colleagueship = employee.colleageships.build
end

helper_method :employee, :colleagueship

应该嵌套路由，以提供用于查找员工的密钥

resources :employees do
  # this will generate /employees/:employee_id/colleagues/:id
  resources :colleagueships
end

在您看来，您可能会使用form_标记帮助器，因为它更容易使用您想要的任何字段自定义表单，特别是如果您要避免接受您应该接受的嵌套属性。如果没有嵌套路由，还可以包含一个带有员工id的隐藏字段标记

= form_tag new_employee_colleague_path do
  = text_field_tag 'colleageship[name]', placeholder: 'something...'

沿着这条思路应该会奏效。确保检查params散列以查看值的格式是否正确

= form_tag new_employee_colleague_path do
  = text_field_tag 'colleageship[name]', placeholder: 'something...'