only create records in nested resources - ruby-on-rails

Question

I'm creating a form in which I create related records, so far it works pretty well, it creates the nested records but when I create them it shows in the same form the related records created before, I just need to save records and not show the ones created in the textfields, how can I do that? this is my form
<%= form_with(model: drugs_device, local: true, html: {class: "formulario_validado"}) do |form| %>
<div class="form-row">
<div class="form-group col-md-6">
<%= form.label :abbreviation,"Código / ATC" %>
<%= form.text_field :abbreviation, class:"form-control", required: "true"%>
</div>
<%=form.fields_for :detail_drugs_devices do |fd| %>
<div class="form-row">
<div class="form-group col-md-3">
<%= fd.label :drug_concentration,"Concentration:" %>
<%= fd.text_field :drug_concentration, class:"form-control" %>
</div>
<div class="form-group col-md-3">
<%= fd.label :route_id,"Vía de administración" %>
<%= fd.select :route_id, options_for_select(#routes.map{|e|[e.description, e.id]}), {:prompt => "Por favor seleccione"}, {:class => "form-control"} %>
</div>
</div>
<%end%>
<div class="row">
<div class="col-md-4 offset-md-8 ">
<%= submit_tag "Guardar", class: "btn btn-primary"%>
</div>
</div>
</div>
<%end%>
my model drugs_device:
class DrugsDevice < ApplicationRecord
belongs_to :group
has_many :detail_drugs_devices
accepts_nested_attributes_for :detail_drugs_devices, reject_if: proc { |attributes| attributes['pharmaceutical_form_id'].blank?}
end
my model DetailDrugsDevice
class DetailDrugsDevice < ApplicationRecord
belongs_to :drugs_device
belongs_to :pharmaceutical_form
belongs_to :unit_size
belongs_to :route
end
my controller:
class DrugsDevicesController < ApplicationController
before_action :set_drugs_device, only: [:show, :edit, :update, :destroy]
# GET /drugs_devices
# GET /drugs_devices.json
def index
##drugs_devices = DrugsDevice.Busqueda_general(params).paginate(page: params[:page]).per_page(3)
#drugs_devices = DrugsDevice.all.paginate(page: params[:page]).per_page(3)
end
# GET /drugs_devices/1
# GET /drugs_devices/1.json
def show
end
# GET /drugs_devices/new
def new
#drugs_device = DrugsDevice.new
#drugs_device.detail_drugs_devices.build
#grupos = Group.all
#pharmaceutical_forms = PharmaceuticalForm.all
#unit_sizes = UnitSize.all
#routes = Route.all
end
# GET /drugs_devices/1/edit
def edit
#drugs_device.detail_drugs_devices.build
#grupos = Group.all
#pharmaceutical_forms = PharmaceuticalForm.all
#unit_sizes = UnitSize.all
#routes = Route.all
end
# POST /drugs_devices
# POST /drugs_devices.json
def create
#drugs_device = DrugsDevice.new(drugs_device_params)
respond_to do |format|
if #drugs_device.save
format.html { redirect_to edit_drugs_device_path(#drugs_device), notice: 'Drugs device was successfully created.' }
format.json { render :show, status: :created, location: #drugs_device }
else
format.html { render :new }
format.json { render json: #drugs_device.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /drugs_devices/1
# PATCH/PUT /drugs_devices/1.json
def update
respond_to do |format|
if #drugs_device.update(drugs_device_params)
format.html { redirect_to edit_drugs_device_path(#drugs_device), notice: 'Drugs device was successfully updated.' }
format.json { render :show, status: :ok, location: #drugs_device }
else
format.html { render :edit }
format.json { render json: #drugs_device.errors, status: :unprocessable_entity }
end
end
end
# DELETE /drugs_devices/1
# DELETE /drugs_devices/1.json
def destroy
#drugs_device.destroy
respond_to do |format|
format.html { redirect_to drugs_devices_url, notice: 'Drugs device was successfully destroyed.' }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_drugs_device
#drugs_device = DrugsDevice.find(params[:id])
end
# Only allow a list of trusted parameters through.
def drugs_device_params
params.require(:drugs_device).permit(:group_id, :atc, :abbreviation, :cientific_name, :stated_at, detail_drugs_devices_attributes: [:pharmaceutical_form_id, :unit_size_id, :route_id, :drug_concentration, :id])
end
end