获取 belongs_to 两个 Parents rails 5 的数据

Question

我有一个 class 如下所示：

class Child < ApplicationRecord
  belongs_to :father
  belongs_to :mother
end

我的目标是创建端点

base-url/father/children #get all children for father
base-url/mother/children #get all children for mother

我想知道嵌套这些资源的正确方法是什么我知道我可以用一种方法来做到这一点：

class ChildrenController < ApplicationController
  before action :set_father, only: %i[show] 
  def show
     @children = @father.children.all
    render json: @children
  end
...

但是我怎样才能得到相同的 base-url/mother/children，这可以通过嵌套资源实现吗？我知道如果需要，我可以对 routes.rb 进行编码以指向特定的控制器功能，但我想了解我是否遗漏了什么，我不确定如果我阅读活动记录和操作包文档上午

Answer 1

我的实现如下：我的 child 控制器：

  def index
    if params[:mother_id]
      @child = Mother.find_by(id: params[:mother_id]).blocks
      render json: @child
    elsif params[:father_id]
      @child = Father.find_by(id: params[:father_id]).blocks
      render json: @child
    else
      redirect_to 'home#index'
    end
  end
...

我的 routes.rb 文件：

Rails.application.routes.draw do
  resources :mother, only: [:index] do
    resources :child, only: [:index]
  end

  resources :father, only: [:index] do
    resources :child, only: [:index]
  end
...

base_url/mother/{mother_id}/children #得到所有children给妈妈
base_url/father/{father_id}/children #获取所有children for father

获取 belongs_to 两个 Parents rails 5 的数据

Get data for belongs_to Two Parents rails 5

activerecord

ruby-on-rails-5

actionpack