/**
* 删除菜单记录.
*
* @param id
* @param redirectAttributes
* @return
*/
@RequestMapping(value = "delete/{id}")
public String delete(@PathVariable("id") Long id, RedirectAttributes redirectAttributes) {
Sidebar sidebar = sidebarService.getSidebar(id);
sidebarService.deleteSidebar(id);
redirectAttributes.addFlashAttribute("message", "删除菜单" + sidebar.getName() + "成功");
return "redirect:/sidebar";
}
/**
* 所有RequestMapping方法调用前的Model准备方法, 实现预处理部分绑定的效果,先根据form的id从数据库查出Sidebar对象,再把Form提交的内容绑定到该对象上。
* 因为仅update()方法的form中有id属性，因此仅在update时实际执行.
*/
@ModelAttribute
public void getSidebar(
@RequestParam(value = "id", defaultValue = "-1") Long id,
@RequestParam(value = "preSidebar.id", defaultValue = "-1") Long preSidebarId,
Model model) {
if (id != -1) {
Sidebar sidebar = sidebarService.getSidebar(id);
if (preSidebarId > 0) {
sidebar.setPreSidebar(sidebarService.getSidebar(preSidebarId));
} else {
sidebar.setPreSidebar(null);
}
model.addAttribute("sidebar", sidebar);
}
}
/**
* 提交更新的菜单信息.
*
* @param sidebar
* @param redirectAttributes
* @return
*/
@RequestMapping(value = "update", method = RequestMethod.POST)
public String update(
@Valid @ModelAttribute("sidebar") Sidebar sidebar, RedirectAttributes redirectAttributes) {
sidebarService.saveSidebar(sidebar);
redirectAttributes.addFlashAttribute("message", "更新菜单‘" + sidebar.getName() + "’成功");
return "redirect:/sidebar";
}