我是 Rails 的初学者，所以我对嵌套属性很着迷.
以下是我要查找的内容的概述:
租车可以造车.(完成)
客户可以预订汽车.
客户与租车同时创建.
我正在尝试制作一个包含客户和预订信息的预订表格，因为填写所有信息的是租车公司.
这就是为什么我需要使用嵌套属性，但直到现在我遇到了一些困难.我有四个模型:
class Car .
class 客户端 .
类保留.
类租车形式:
<%= form_for([@car, @car.reservations.new]) 做 |f|％＞<div class="col-md-12 price_tag"><span><%=@car.price %>Dhs</span><span class="pull-right">Par jour</span><div class="row"><div class="col-md-6"><label>Nom</label><%= f.text_field :nom, placeholder: 'Nom', class: 'form-control' %>
<div class="col-md-6"><label>Prenom</label><%= f.text_field :prenom, placeholder: 'Prenom', class: 'form-control', disabled: 'true' %>
<div class="row"><div class="col-md-6"><label>CIN</label><%= f.text_field :cin, placeholder: 'CIN', class: 'form-control' %>
<div class="col-md-6"><label>年龄</label><%= f.text_field :age, placeholder: 'Age', class: 'form-control', disabled: 'true' %>
<div class="row"><div class="col-md-6"><label>Ville</label><%= f.text_field :ville, placeholder: 'Ville', class: 'form-control' %>
<div class="col-md-6"><label>电话</label><%= f.text_field :telephone, placeholder: 'Telephone', class: 'form-control', disabled: 'true' %>
<div class="row"><div class="col-md-6"><label>电子邮件</label><%= f.text_field :email, placeholder: 'Email', class: 'form-control' %>
<%= f.fields_for :reservations do |reservation_form|％＞<div class="row"><div class="col-md-6"><label>签入</label><%= reserved_form.text_field :start_date, readonly: 'true', placeholder: 'Start Date', class: 'form-control' %>
<div class="col-md-6"><label>签出</label><%=reservation_form.text_field :end_date, readonly: 'true', placeholder: 'End Date', class: 'form-control', disabled: 'true' %>
<%=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' %><%结束%><h4><span id="message"></span></h4><div id="preview" style="display: none"><table class="reservation-table" ><tr><td>天</td><td><span id="reservation_days"></span></td></tr><tr><td>总计</td><td><span id="reservation_sum"></span>Dhs</td></tr></tbody><br>
<br><%= f.submit "Book Now", id:"btn_book", class: "btn btn-primary wide", disabled: 'true' %>
所以我们的想法是在执行以下操作后获得此表单:cars/1/reservate.我们将在控制器中有这样的东西:
def 保留@car = Car.find(params[:id])@client = Client.new@client.reservations.build结尾但我不知道它应该留在哪个控制器
索引:
add_index "reservations", ["client_id"], name: "index_reservations_on_client_id", using: :btreeadd_index "reservations", ["car_id"], 名称:"index_reservations_on_car_id"，使用::btreeadd_index "voitures", ["rentelcar_id"]，名称:"index_voitures_on_rentelcar_id"，使用::btreeadd_foreign_key "预订", "客户"add_foreign_key "预订", "汽车"add_foreign_key "汽车", "rentelcars" 解决方案 我觉得你们的关系有点乱，我就是这样建立新关系的.
class AddRelevantModels ActiveRecord::迁移定义改变create_table :car_rentals 做 |t|t.string :namet.timestamps null: false结尾create_table :汽车做 |t|t.string :模型t.string :car_numbert.belongs_to :car_rental, index: true, foreign_key: truet.timestamps null: false结尾create_table :客户端做 |t|t.string :full_namet.整数:年龄t.string : 电子邮件t.string :phone_numbert.timestamps null: false结尾create_table :reservations do |t|t.belongs_to :car, index: true, foreign_key: truet.belongs_to :client, index: true, foreign_key: truet.datetime :start_datet.datetime :end_datet.timestamps null: false结尾结尾结尾car_rental.rb
class CarRental <ActiveRecord::Basehas_many :汽车结尾car.rb
class Car reservation.rb
类保留client.rb
class 客户端 reservations_controller.rb
class ReservationsController reservations/new.html.erb
Reservations
<%= form_for(@reservation) 做 |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.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 %><%结束%><br><%= f.submit %><%结束%>现在，如果您提交表单，您可以在您的数据库中看到客户也已保存以进行预订.
Reservation.first.client预订负载 (0.5ms) SELECT "reservations".* FROM "reservations" ORDER BY "reservations"."id" ASC LIMIT 1客户端负载 (0.4ms) SELECT "clients".* FROM "clients" WHERE "clients"."id" = $1 LIMIT 1 [["id", 1]]=>#<客户 ID:1，全名:remis"，年龄:22，电子邮件:remis@gmail.com"，电话号码:1231331"，created_at:2016-06-13 06:28:37"，updated_at:2016-06-13 06:28:37">I'm a beginner in rails, so I'm quite stuck with the nested attributes.
Here is an overview of what I'm looking for:
A rentalcar can create cars.(done)
Clients can reserve a car.
Clients are created with the reservation at the same time by the rentalcar.
I'm trying to make a form for reservation which will contain both the client and the reservation information, since it will be the rentalcar who fill all the information.
It's why i need to use nested attributes, but until now I'm having some difficulties.I have four models:
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
The form :
<%= 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' %>
So the idea is to get this form after doing something like : cars/1/reservate.And we will have something like this in the controller:
def reservate
@car = Car.find(params[:id])
@client = Client.new
@client.reservations.build
end
but i dont know in which controller it should remains
Edit1 :
Indexes :
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"
解决方案 I believe your relationships are a bit messed up, this is how I created new relations.
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 %>
Now if you submit the form you can see in your database that the client is also saved for the reservation.
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: "remis@gmail.com", phone_number: "1231331", created_at: "2016-06-13 06:28:37", updated_at: "2016-06-13 06:28:37">
这篇关于尝试使用嵌套属性制作表单的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！
08-19 12:50
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