Nested attributes not being saved in rails form - ruby-on-rails

Question

I'm trying to create a nested form in Ruby on Rails. The form appears as expected. But when it is saved the nested attribute, Booking, is not saved.
cleaner.rb
class Cleaner < ActiveRecord::Base
validates_presence_of :first_name
validates_presence_of :last_name
validates_presence_of :quality_score
validates :quality_score, inclusion: 0.0...5.0
has_many :assignments
has_many :bookings
has_many :cities, through: :assignments
has_many :customers, through: :bookings
end
customer.rb
class Customer < ActiveRecord::Base
validates_presence_of :first_name
validates_presence_of :last_name
validates_uniqueness_of :phone_number
belongs_to :city
has_many :bookings
has_many :cleaners, through: :bookings
accepts_nested_attributes_for :bookings
end
booking.rb
class Booking < ActiveRecord::Base
belongs_to :customer
belongs_to :cleaner
validates_presence_of :customer
validates_presence_of :cleaner
validates_presence_of :date
end
customers_controller.rb
class CustomersController < ApplicationController
before_action :set_customer, only: %i[show edit update destroy]
def index
#customers = Customer.all
end
def show; end
def new
#customer = Customer.new
end
def edit; end
def create
#customer = Customer.find_or_initialize_by(phone_number: params[:phone_number])
#customer.assign_attributes(customer_params)
respond_to do |format|
if #customer.save
format.html { redirect_to #customer, notice: 'Customer was successfully created.' }
format.json { render :show, status: :created, location: #customer }
else
format.html { render :new }
format.json { render json: #customer.errors, status: :unprocessable_entity }
end
end
end
def update
respond_to do |format|
if #customer.update(customer_params)
format.html { redirect_to #customer, notice: 'Customer was successfully updated.' }
format.json { render :show, status: :ok, location: #customer }
else
format.html { render :edit }
format.json { render json: #customer.errors, status: :unprocessable_entity }
end
end
end
def destroy
#customer.destroy
respond_to do |format|
format.html { redirect_to customers_url, notice: 'Customer was successfully destroyed.' }
format.json { head :no_content }
end
end
private
def set_customer
#customer = Customer.find(params[:id])
end
def customer_params
params.require(:customer).permit(:first_name, :last_name, :phone_number, :city, :city_id, bookings_attributes: %i[cleaner_id date])
end
end
HomeController.rb
class HomeController < ApplicationController
def index
#customer = Customer.new
#customer.bookings.build
end
end
Parameters
{"utf8"=>"✓", "authenticity_token"=>"c4xo2M4r57+/xBsmcc+7yajpQU13u1kiwmOthx/nP7HiJXJIfS9/OqC0MrWCcaDrSW/xN8UGk2+LVfnUnbTb3A==", "customer"=>{"first_name"=>"adfad", "last_name"=>"fad", "phone_number"=>"9392323", "city_id"=>"1", "bookings_attributes"=>{"0"=>{"cleaner_id"=>"1"}}}, "#<ActionView::Helpers::FormBuilder:0x007f86bec96480>"=>{"date(1i)"=>"2017", "date(2i)"=>"8", "date(3i)"=>"2"}, "commit"=>"Create Customer"}
updated form
<h1>Sign Up Now</h1>
<%= form_for #customer do |f| %>
<% if #customer.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(#customer.errors.count, "error") %> prohibited this customer from being saved:</h2>
<ul>
<% #customer.errors.full_messages.each do |message| %>
<li><%= message %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :first_name %><br>
<%= f.text_field :first_name %>
</div>
<div class="field">
<%= f.label :last_name %><br>
<%= f.text_field :last_name %>
</div>
<div class="field">
<%= f.label :phone_number %><br>
<%= f.text_field :phone_number %>
</div>
<div class="field">
<%= f.label :city %><br>
<%= f.select :city_id, options_for_select(City.pluck(:name, :id)) %>
</div>
<%= f.fields_for :bookings do |b| %>
<%= b.date_select :date %>
<br>
<%= b.select :cleaner_id, Cleaner.all.pluck(:first_name, :id) %>
<% end %>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
It's now failing with 2 errors
Bookings customer can't be blank
Bookings date can't be blank

Answer 1

use the iteration of the first #customer so rails can read properly
i saw this example https://www.sitepoint.com/complex-rails-forms-with-nested-attributes/
<%= f.fields_for :booking do |ff| %>
<%= ff.select :city_id,options_for_select(City.pluck(:name, :id)) %>
i hope it works cross finger :)