How can I save the datas checked with simple_form checkbox? - ruby-on-rails

Question

I am beginner with Ruby on Rails, and I am trying to build a little app that permit people to order a pastrie from a cooker, for a day chosen.
When they select the pastrie using a checkbox, I would like that the selected pastrie was saved as pastrie_id in the table fight but instead, I have an issue :
Validation failed: Pastrie must exist.
UPDATE this is working :
<%= f.association :pastrie, as: :check_boxes, label: 'Pastrie' %>
I still have an issue, the saving params are not good I have :
"fight"=>{"pastrie_id"=>["", "1"]},
I tried a lot of solutions found on stackoverflow but nothing seems to work.
I am using Rails 5.2.3
So, this is my schema :
ActiveRecord::Schema.define(version: 2019_06_06_094318) do
create_table "cookers", force: :cascade do |t|
t.string "name"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "pastrie"
end
create_table "events", force: :cascade do |t|
t.datetime "date"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
create_table "fights", force: :cascade do |t|
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.integer "pastrie_id"
t.integer "event_id"
t.integer "cooker_id"
t.index ["cooker_id"], name: "index_fights_on_cooker_id"
t.index ["event_id"], name: "index_fights_on_event_id"
t.index ["pastrie_id"], name: "index_fights_on_pastrie_id"
end
create_table "pastries", force: :cascade do |t|
t.string "pastrie_name"
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
end
end
Here is my models :
class Event < ApplicationRecord
has_many :pastries, through: :fights
has_many :cookers, through: :fights
has_many :fights
end
class Fight < ApplicationRecord
belongs_to :pastrie
belongs_to :event
belongs_to :cooker, optional: true
end
class Pastrie < ApplicationRecord
has_many :fights
has_many :events, through: :fights
end
This is my controller. What I understand is : in order to create a Fight, I need an event_id and a pastrie_id (cooker_id is optional). So first, I create a new event (and so I have an event_id), and next, I need to connect a pastrie_id (existing in my seed) to my fight. But this is not working if I am doing that :
class FightsController < ApplicationController
def new
#fight = Fight.new
#event = Event.find(params[:event_id])
#pastries = Pastrie.all
end
def create
#fight = Fight.new(fight_params)
#event = Event.find(params[:event_id])
#fight.event = Event.find(params[:event_id])
#fight.pastrie_id = params[:fight][:pastrie_id]
#fight.save!
redirect_to root_path
end
def show
#events = Event.all
end
def index
#fights = Fight.all
fights_by_event = []
end
private
def fight_params
params.require(:fight).permit(:event_id, :pastrie_id, :cooker_id)
end
end
And my view when I am creating my "fight" :
<div class=margin-bottom>
<h2 class=text-center> Bonjour Linguini, quelles patisseries veux-tu choisir ?</h2>
</div>
<div class="container margin-bottom">
<%= simple_form_for [#event, #fight] do |f| %>
<% #pastries.each do |pastrie| %>
<%= f.label :pastrie_id do %>
<%= f.check_box :pastrie_id, as: :boolean, checked_value: true, unchecked_value: false %> <span><%= pastrie.pastrie_name%></span>
<% end %></br>
<% end %>
<%= f.submit "Valider", class: "btn btn-primary" %>
<% end %>
</div>
And this is my routes if you need this :
Rails.application.routes.draw do
root to: 'pages#home'
resources :events do
resources :fights, only: [:new, :show, :create]
end
resources :fights, only: [:index]
# For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
end

Answer 1

In your form change
<%= f.check_box :pastrie_id, as: :boolean, checked_value: true, unchecked_value: false %> <span><%= pastrie.pastrie_name%></span>
To
<%= f.check_box :pastrie_id, as: :boolean, checked_value: pastrie.id, unchecked_value: nil %> <span><%= pastrie.pastrie_name%></span>
In the first version you submit a param of {pastrie_id: true}, which obviously doesn't relate to a Pastry. The second version should submit the ID of the checked box (although if it belongs to only 1 pastry it might make more sense to make these radio buttons)