ruby-on-rails - Ruby on rails query 不知道怎么写

Question

我是 ruby​​ on rails 的新手，但不是编程的新手。我有一个问题要查询。我也知道 restaurants 拼错了

 class ResturantsController < ApplicationController
   before_action :set_resturant, only: %i[ show edit update destroy ]

   # GET /resturants or /resturants.json
   def index
    @resturants = Resturant.all.order("created_at desc")
   end

   # GET /resturants/1 or /resturants/1.json
   def show
     @food_items = FoodItem.find(resturant = Resturant.name)
   end

1. 为什么我可以获得特定的 GET 以按名称获取餐厅，例如/resturants/McDonalds

2. 我还想将@food_items = FoodItem.find(resturant = Resturant.name) 写成SELECT * from food_Items WHERE (restaurant: restaurant.name)

Answer 1

通过名称获取餐厅@resturants = Resturant.find_by_name("restuarant_name")

获取食品@food_items = FoodItem.where(resturant: "restuarant_name")