ruby on rails - recursos - Intentando hacer un formulario usando atributos anidados

formularios en ruby on rails

Question

Soy un principiante en los rieles, así que estoy quiete pegado con los atributos anidados.

Aquí hay una descripción general de lo que estoy buscando:

Un auto de alquiler puede crear autos. (Hecho)

Los clientes pueden reservar un automóvil.

Los clientes son creados con la reserva al mismo tiempo por el rentalcar.

Estoy tratando de hacer un formulario de reserva que contendrá tanto el cliente como la información de la reserva, ya que será el alquiler el que llene todas las informaciones.

Es por eso que necesito usar atributos anidados, pero hasta ahora tengo algunas dificultades. Tengo cuatro modelos:

class Car < ActiveRecord::Base
  belongs_to :rentalcar
  has_many :photos
  has_many :reservations
end 

.

class Client < ActiveRecord::Base
 has_many :reservations
end 

.

class Reservation < ActiveRecord::Base
 belongs_to :client
 belongs_to :car
end 

.

class rentalcar < ActiveRecord::Base
 has_many :cars
 has_many :reservations
end 

La forma :

<%= form_for([@car, @car.reservations.new]) do |f| %>

<div class="row">
    <div class="col-md-12 price_tag">
        <span><%= @car.price %>Dhs</span>
        <span class="pull-right">Par jour</span>
    </div>
</div>

<div class="row">
    <div class="col-md-6">
        <label>Nom</label>
        <%= f.text_field :nom, placeholder: ''Nom'', class: ''form-control'' %>     
    </div>
    <div class="col-md-6">
        <label>Prenom</label>
        <%= f.text_field :prenom, placeholder: ''Prenom'', class: ''form-control'', disabled: ''true'' %>     
    </div>
</div>

<div class="row">
    <div class="col-md-6">
        <label>CIN</label>
        <%= f.text_field :cin, placeholder: ''CIN'', class: ''form-control'' %>     
    </div>
    <div class="col-md-6">
        <label>Age</label>
        <%= f.text_field :age, placeholder: ''Age'', class: ''form-control'', disabled: ''true'' %>       
    </div>
</div>

<div class="row">
    <div class="col-md-6">
        <label>Ville</label>
        <%= f.text_field :ville, placeholder: ''Ville'', class: ''form-control'' %>     
    </div>
    <div class="col-md-6">
        <label>Télephone</label>
        <%= f.text_field :telephone, placeholder: ''Telephone'', class: ''form-control'', disabled: ''true'' %>       
    </div>
</div>

<div class="row">
    <div class="col-md-6">
        <label>Email</label>
        <%= f.text_field :email, placeholder: ''Email'', class: ''form-control'' %>     
    </div>
</div>

<%= f.fields_for :reservations do |reservation_form| %>

<div class="row">
    <div class="col-md-6">
        <label>Check In</label>
        <%= reservation_form.text_field :start_date, readonly: ''true'', placeholder: ''Start Date'', class: ''form-control'' %>      
    </div>
    <div class="col-md-6">
        <label>Check Out</label>
        <%= reservation_form.text_field :end_date, readonly: ''true'', placeholder: ''End Date'', class: ''form-control'', disabled: ''true'' %>        
    </div>
</div>

<%= reservation_form.hidden_field :car_id, value: @car.id %>
<%= reservation_form.hidden_field :price, value: @car.prix %>
<%= reservation_form.hidden_field :total, id: ''reservation_total'' %>

<% end %>

<h4><span id="message"></span></h4>

<div id="preview" style="display: none">
    <table class="reservation-table" >
        <tbody>
            <tr>
                <td>Day(s)</td>
                <td><span id="reservation_days"></span></td>
            </tr>
            <tr>
                <td>Total</td>
                <td><span id="reservation_sum"></span>Dhs</td>
            </tr>
        </tbody>
    </table>
    <br>
</div>

<br>
<%= f.submit "Book Now", id:"btn_book", class: "btn btn-primary wide", disabled: ''true'' %>

Entonces la idea es obtener este formulario después de hacer algo como: cars / 1 / reservate. Y tendremos algo como esto en el controlador:

def reservate
 @car = Car.find(params[:id])
 @client = Client.new
 @client.reservations.build
end 

pero no sé en qué controlador debería permanecer

Edit1:

Índices:

add_index "reservations", ["client_id"], name: "index_reservations_on_client_id", using: :btree 

add_index "reservations", ["car_id"], name: "index_reservations_on_car_id", using: :btree 

add_index "voitures", ["rentelcar_id"], name: "index_voitures_on_rentelcar_id", using: :btree

add_foreign_key "reservations", "clients"
add_foreign_key "reservations", "cars"
add_foreign_key "cars", "rentelcars"

Answer 1

Creo que tus relaciones están un poco desordenadas, así es como creé nuevas relaciones.

class AddRelevantModels < ActiveRecord::Migration
  def change
    create_table :car_rentals do |t|
      t.string      :name
      t.timestamps  null: false
    end

    create_table :cars do |t|
      t.string      :model
      t.string      :car_number
      t.belongs_to  :car_rental, index: true, foreign_key: true
      t.timestamps  null: false
    end

    create_table :clients do |t|
      t.string      :full_name
      t.integer     :age
      t.string      :email
      t.string      :phone_number
      t.timestamps  null: false
    end

    create_table :reservations do |t|
      t.belongs_to    :car, index: true, foreign_key: true
      t.belongs_to    :client, index: true, foreign_key: true
      t.datetime      :start_date
      t.datetime      :end_date
      t.timestamps    null: false
    end
  end
end

car_rental.rb

class CarRental < ActiveRecord::Base
  has_many :cars
end

car.rb

class Car < ActiveRecord::Base
  has_many :reservations
  has_many :clients, through: :reservations
end

reservation.rb

class Reservation < ActiveRecord::Base 
  belongs_to :client
  belongs_to :car

  accepts_nested_attributes_for :client
  accepts_nested_attributes_for :car
end

client.rb

class Client < ActiveRecord::Base
  has_many :reservations
  has_many :cars, through: :reservations
end

reservations_controller.rb

class ReservationsController < ApplicationController
  def new
    @reservation = Reservation.new
    @reservation.build_client
  end

  def create
    @reversation = Reservation.new(reservation_params)

    if @reversation.save
      render :show, id: @reservation
    else
      render :new
    end
  end

  private

  def reservation_params
    params.require(:reservation)
    .permit(
      :start_date, :end_date, client_attributes: [:full_name, :age, :email, :phone_number]
    )
  end
end

reservations/new.html.erb

<h1>Reservations</h1>
<%= form_for(@reservation) do |f| %>
  <%= f.label :start_date %>
  <%= f.text_field :start_date %>
  <br>
  <%= f.label :end_date %>
  <%= f.text_field :end_date %>
  <br>
  <%= f.fields_for :client do |client_field| %>
    <%= client_field.label :full_name %>
    <%= client_field.text_field :full_name %>
    <br>  
    <%= client_field.label :age %>
    <%= client_field.text_field :age %>
    <br>   
    <%= client_field.label :email %>
    <%= client_field.text_field :email %>
    <br>
    <%= client_field.label :phone_number %>
    <%= client_field.text_field :phone_number %>
  <% end %>

  <br>
  <%= f.submit %>
<% end %>

Ahora, si envía el formulario, puede ver en su base de datos que el cliente también está guardado para la reserva.

 Reservation.first.client
  Reservation Load (0.5ms)  SELECT  "reservations".* FROM "reservations"   ORDER BY "reservations"."id" ASC LIMIT 1
  Client Load (0.4ms)  SELECT  "clients".* FROM "clients"  WHERE "clients"."id" = $1 LIMIT 1  [["id", 1]]
 => #<Client id: 1, full_name: "remis", age: 22, email: "[email protected]", phone_number: "1231331", created_at: "2016-06-13 06:28:37", updated_at: "2016-06-13 06:28:37">