Railsでのメモアプリの新規登録機能の実装ができない

ラジオ番組情報の登録の際、パーソナリティ名、放送局、放送日時、開始時刻、終了時刻の必要項目を埋めて番組情報を登録しようとしても、番組情報の新規登録はできずに番組情報の新規登録画面に遷移してしまう。

class ProgramsController < ApplicationController
  before_action :set_program, only: %i[show edit update destroy]
  
  def index
    @q = Program.ransack(params[:q])
    @programs = @q.result(distinct: true).sort_by { |program| [week_day_order(extract_day_of_week(program.day_of_week)), program.start_time] }
  end

  def new
    @programs = Program.all.order(day_of_week: :asc)
    @programs = @programs.sort_by { |program| week_day_order(program.day_of_week) }
  end

  def create
    @program = Program.new(program_params)
    if @program.save
      host = Host.find_or_create_by(name: @program.host_name)
      @program.hosts << host unless @program.hosts.include?(host)
      @program.update(host_id: host.id)

      redirect_to programs_path, success: "番組情報を作成しました"
    else
      flash.now[:danger] = "番組情報を作成できませんでした"
      render :new, status: :unprocessable_entity
    end
  end

  def show; end

  def edit; end

  def update
    if @program.update(program_params)
      redirect_to @program, success: "番組情報を更新しました"
    else
      flash.now[:danger] = "番組情報を更新できませんでした"
      render :edit, status: :unprocessable_entity
    end
  end

  def destroy
    @program.destroy!
    redirect_to programs_path, success: "番組情報を削除しました", status: :see_other
  end

  private

  def program_params
    params.require(:program).permit(:title, :host_name, :channel, :day_of_week, :start_time, :end_time, :host_id)
  end
  
  def set_program
    @program = Program.find(params[:id])
  end

  def extract_day_of_week(day_of_week)
    day_of_week.match(/(月曜日|火曜日|水曜日|木曜日|金曜日|土曜日|日曜日)/)&.to_s
  end

  def week_day_order(day_of_week)
    days = %w[月曜日 火曜日 水曜日 木曜日 金曜日 土曜日 日曜日]
    days.index(day_of_week) || 0
  end
end



new.html.erb
    <h1 class="font-bold mb-6 text-center" style="font-size: 2.5rem;">
    番組情報登録
    </h1>
    <%= render 'form', program: @program %>



_form.html.erb
  <%= form_with model: @program, local: true do |f| %>
  <div class='field mb-4'>
    <%= f.label "番組名", class: "form-label" %>
    <%= f.text_field :title, class: "input input-bordered w-full max-w-xl" %>
  </div>
  <div class='field mb-4'>
    <%= f.label "パーソナリティ名", class: "form-label" %>
    <%= f.text_field :host_name, class: "input input-bordered w-full max-w-xl" %>
  </div>
  <div class='field mb-4'>
    <%= f.label "放送局", class: "form-label" %>
    <%= f.text_field :channel, class: "input input-bordered w-full max-w-xl" %>
  </div>
  <div class='field mb-4'>
    <%= f.label "放送曜日", class: "form-label" %>
    <%= f.text_field :day_of_week, class: "input input-bordered w-full max-w-xl" %>
  </div>
  <div class="max-w-[16rem] mx-auto grid grid-cols-2 gap-4">
    <div class='field mb-4'>
      <%= f.label :start_time, "放送開始時刻", class: "form-label" %>
      <%= f.time_field :start_time, 
        class: "bg-gray-50 border border-gray-300 leading-none text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5",
        style: "border-color: #d1d5db;", 
        required: true %>
    </div>
    <div class='field mb-4'>
      <%= f.label :end_time, "放送終了時刻", class: "form-label" %>
      <%= f.time_field :end_time, 
        class: "bg-gray-50 border border-gray-300 leading-none text-gray-900 text-sm rounded-lg focus:ring-blue-500 focus:border-blue-500 block w-full p-2.5",
        style: "border-color: #d1d5db;", 
        required: true %>
    </div>
  </div>
  <div class="flex justify-center mb-6">
    <%= f.submit "登録", class: 'btn bg-orange-500 hover:bg-orange-600 text-white' %>
  </div>
<% end %>