如何使用AJAX在rails中显示验证错误

gem 'jquery-rails'

<div id="error-messages"></div>

def create
  @model = Model.new(model_params)
  if @model.save
    # 保存成功的逻辑
  else
    respond_to do |format|
      format.json { render json: @model.errors, status: :unprocessable_entity }
    end
  end
end

$(document).on('submit', '#your-form-id', function(e) {
  e.preventDefault();
  var form = $(this);
  var url = form.attr('action');
  var method = form.attr('method');
  var data = form.serialize();

  $.ajax({
    url: url,
    method: method,
    data: data,
    dataType: 'json',
    success: function(response) {
      // 保存成功的逻辑
    },
    error: function(response) {
      var errors = response.responseJSON;
      var errorMessages = '';

      $.each(errors, function(key, value) {
        errorMessages += '<p>' + key + ' ' + value + '</p>';
      });

      $('#error-messages').html(errorMessages);
    }
  });
});