Ruby On Rails - Update method does not work

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Ruby On Rails - Update method does not work

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#1 by (4 votes)

1

I am having problems with the Destroy method of my RoR application. Having a list of restaurants, and wanting to modify one of them by clicking Edit, all my entries are modified when I only want to modify the selected one.

Here's my code:

Controller:

class RestaurantsController < ApplicationController

  before_action :set_restaurant, only: [:show, :edit, :update, :destroy]

  def index
    @restaurants = Restaurant.all
  end

  def show

  end

  def new
    @restaurant = Restaurant.new
  end

  def create
    Restaurant.create(restaurant_params)
    redirect_to restaurants_path
  end

  def edit

  end

  def update
    Restaurant.update(restaurant_params)
    # raise
    redirect_to restaurants_path
  end

  def destroy
    @restaurant.destroy
    redirect_to restaurants_path
  end
end

private

def set_restaurant
  @restaurant = Restaurant.find(params[:id])
end

def restaurant_params
  params.require(:restaurant).permit(:name, :address, :stars)
end

Routes:

         Prefix Verb   URI Pattern                     Controller#Action
    restaurants GET    /restaurants(.:format)          restaurants#index
                POST   /restaurants(.:format)          restaurants#create
 new_restaurant GET    /restaurants/new(.:format)      restaurants#new
edit_restaurant GET    /restaurants/:id/edit(.:format) restaurants#edit
     restaurant GET    /restaurants/:id(.:format)      restaurants#show
                PATCH  /restaurants/:id(.:format)      restaurants#update
                PUT    /restaurants/:id(.:format)      restaurants#update
                DELETE /restaurants/:id(.:format)      restaurants#destroy

Index.html.erb:

<h3>Liste des restaurants</h3>

<h3><%= link_to "Create a new restaurant", new_restaurant_path %></h3>

<% @restaurants.each do |restaurant| %>

<h2>--------------------------------------------------------------</h2>

  <h3>Name: <%= restaurant.name %></h3>
  <h3>Stars: <%= restaurant.stars %></h3>
  <h3>Address: <%= restaurant.address %></h3>
  <h3><%= link_to "See", restaurant_path(restaurant) %></h3>
  <h3><%= link_to "Edit", edit_restaurant_path(restaurant) %></h3>
  <h3><%= link_to "Delete", restaurant_path(restaurant), method: :delete, data: { confirm: "Are you sure?" } %></h3>
<% end %>

ruby-on-rails ruby

asked by mrngview 17.01.2017 в 15:37

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1 answer

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score 4 · Answer 1

What you're calling is Restaurant.update (restaurant_params) this generates a query update towards all your records in that table.

You have to change your update method in the following way:

def update
  if @restaurant.update(restaurant_params)
    redirect_to restaurants_path
  else
    render :edit
  end
end