在simple_form_for rails中设置默认时间戳

class YourModel < ApplicationRecord
  timestamps
end

<%= simple_form_for @your_model do |f| %>
  <%= f.input :created_at, as: :hidden, input_html: { value: Time.now } %>
  <%= f.input :updated_at, as: :hidden, input_html: { value: Time.now } %>
  <!-- 其他表单字段 -->
  <%= f.button :submit %>
<% end %>

class YourModelsController < ApplicationController
  def create
    @your_model = YourModel.new(your_model_params)
    # 其他逻辑
  end

  def update
    @your_model = YourModel.find(params[:id])
    # 其他逻辑
  end

  private

  def your_model_params
    params.require(:your_model).permit(:created_at, :updated_at, :other_attributes)
  end
end