Rails 4: Create new records through has_many association - ruby-on-rails

Question

I am trying to create a new record for 'campaign' via the 'customer' as follows. The form submits correctly, however no new campaign record is created for the customer. Any advise would be greatly appreciated.
Models
class Customer::Customer < User
has_one :library, dependent: :destroy
has_many :campaigns, dependent: :destroy
accepts_nested_attributes_for :campaigns, :library, allow_destroy: true
end
class Customer::Campaign < ActiveRecord::Base
belongs_to :customer
end
Customer Controller - Update Method only shown
class Customer::CustomersController < ApplicationController
layout "customer_layout"
def update
session[:return_to] ||= request.referer
#customer = User.find(params[:id])
if #customer.update_attributes(customer_params)
flash[:success] = "Profile updated"
redirect_to #customer
else
flash[:notice] = "Invalid"
redirect_to session.delete(:return_to)
end
end
def customer_params
params.require('customer_customer').permit(:name, :email, :password, :password_confirmation, :country_code, :state_code, :postcode, :first_name, :surname, campaigns_attributes:[:name, :description, :start_date, :complete_date ])
end
end
And the form I am using
<%= form_for #customer do |f| %>
<%= render 'shared/customer_error_messages' %>
<%= f.fields_for :campaign do |builder| %>
<%= builder.label :name, "Campaign Name" %></br>
<%= builder.text_field :name %>
<% end %>
<div class="actions">
<%= f.submit class: "btn btn-large btn-primary"%>
</div>
<% end %>
And the console output (with error, is as follows)
Started PATCH "/customer/customers/38" for 127.0.0.1 at 2014-05-26 23:13:10 +1000
Processing by Customer::CustomersController#update as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"9ChLYna0/VfZSMJOa2yGgvWTT61XkjoYwlVup/Pbbeg=", "customer_customer"=>{"campaign"=>{"name"=>"My new campaign"}}, "commit"=>"Update Customer", "id"=>"38"}
User Load (0.5ms) SELECT "users".* FROM "users" WHERE "users"."remember_token" = '0e8b4ba6dc957e76948fc22bae57673404deb9fe' LIMIT 1
User Load (0.3ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", "38"]]
CACHE (0.0ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 LIMIT 1 [["id", "38"]]
Unpermitted parameters: campaign

Answer 1

If this form performs adding only one campaign i guess you should handly add this exect campaign to customer. If you update all campaign model in such way, you should have all your campaigns in array. So it implies another controller action for this.
Another way: to check if params contains field campain and then just add it to customer object:
def update
session[:return_to] ||= request.referer
#customer = User.find(params[:id])
if new_campaign_customer_params.has_key? :campaign
#customer.campaigns << Campaign.new(new_campaign_customer_params)
if #customer.save
flash[:success] = "Profile updated"
redirect_to #customer
else
flash[:notice] = "Invalid"
# you should rerender your view here, set it path
render 'your_view'
end
else
if #customer.update_attributes(customer_params)
flash[:success] = "Profile updated"
redirect_to #customer
else
flash[:notice] = "Invalid"
redirect_to session.delete(:return_to)
end
end
end
def new_campaign_customer_params
params.require('customer_customer').permit(campaign_attributes:[:name, :description, :start_date, :complete_date ])
end
Check this out, not sure it works.
Or maybe it would work how to suggests in comment: change campaigns_attributes => campaign_attributes in customer_params method, and f.fields_for :campaigns in form (belongs to #Nikita Chernov)