RegistrationsController example using nested_attributes

registrations_controller_using_nested_attributes.rb

class RegistrationsController < Devise::RegistrationsController
  def create
    @user = User.new(sign_up_params)
    if @user.save
      # ...
    else
      render json: @user.errors, status: :unprocessable_entity
    end
  end
    
  private 

  def sign_up_params
    params.require(:user).permit(:name, :email, :phone, :password, :password_confirmation,
                                 user_request_attributes: user_request_params)
  end
  
  def user_request_params
    [:min_price, :max_price, :rating, :discount, provider_ids: [], :warranty, :keywords]
  end
  
  # ...
end