Ruby on Rails -使用原始参数在失败的控制器操作上重新呈现窗体

# 控制器
class UsersController < ApplicationController
  def create
    @user = User.new(user_params)
    
    if @user.save
      redirect_to @user
    else
      render 'new'
    end
  end
  
  private
  
  def user_params
    params.require(:user).permit(:name, :email, :password)
  end
end

# 视图 new.html.erb
<%= form_with(model: @user) do |form| %>
  <% if @user.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@user.errors.count, "error") %> prohibited this user from being saved:</h2>
  
      <ul>
      <% @user.errors.full_messages.each do |message| %>
        <li><%= message %></li>
      <% end %>
      </ul>
    </div>
  <% end %>
  
  <div class="field">
    <%= form.label :name %>
    <%= form.text_field :name %>
  </div>
  
  <div class="field">
    <%= form.label :email %>
    <%= form.email_field :email %>
  </div>
  
  <div class="field">
    <%= form.label :password %>
    <%= form.password_field :password %>
  </div>
  
  <div class="actions">
    <%= form.submit %>
  </div>
<% end %>