/// <summary>
/// 【2】新菜品发布
/// </summary>
/// <param name="dishes"></param>
/// <param name="dishesImg"></param>
/// <returns></returns>
public ActionResult PublishDishes(Dishes dishes, HttpPostedFileBase dishesImg)
{
try
{
if (dishesImg != null && dishesImg.FileName != "") //检查是否选择了图片
{
//判断文件大小是否符合要求
double fileLength = dishesImg.ContentLength / (1024.0 * 1024.0);
if (fileLength > 2.0)
{
return(Content("<script>alert('图片最大不能超过2MB');loaction.href='" + Url.Action("DishesPublish") + "'</script>"));
}
}
else //如果没有上传的图片
{
return(Content("<script>alert('请选择上传的图片！');location.href='" + Url.Action("DishesPublish") + "'</script>"));
}
int result = new DishesMananger().AddDishes(dishes);
if (result > 0) //如果数据库操作成功，则上传图片到服务指定文件夹
{
//注意后台添加菜品对象的时候，需要返回标识列的值，因为这个值需要作为图片的名称
string filePath = Server.MapPath("~/Images/dishes/" + result + ".png");
dishesImg.SaveAs(filePath);
}
return(Content("<script>alert('菜品上传成功！');location.href='" + Url.Action("DishesPublish") + "'</script>"));
}
catch (Exception ex)
{
return(Content("<script>alert('程序出错：'" + ex.Message + "');</script>"));
}
}
/// <summary>
/// 【2】修改菜品
/// </summary>
/// <param name="dishes"></param>
/// <param name="dishesImg"></param>
/// <returns></returns>
public ActionResult UpdateDishes(Dishes dishes, HttpPostedFileBase dishesImg)
{
try
{
int result = new DishesMananger().ModifyDishes(dishes);
if (result > 0)
{
if (dishesImg != null && dishesImg.FileName != "") //判断是否需要修改图片
{
//判断文件大小是否符合要求
double fileLength = dishesImg.ContentLength / (1024.0 * 1024.0);
if (fileLength > 2.0)
{
return(Content("<script>alert('图片最大不能超过2MB');loaction.href='" + Url.Action("DishesPublish") + "'</script>"));
}
string filePath = Server.MapPath("~/Images/dishes/" + dishes.DishesId + ".png");
dishesImg.SaveAs(filePath);
}
}
return(Content("<script>alert('菜品修改成功！');location.href='" + Url.Action("DishesManager") + "'</script>"));
}
catch (Exception ex)
{
return(Content("<script>alert('程序出错：'" + ex.Message + "');</script>"));
}
}
/// <summary>
/// 【1】添加新菜品页面
/// </summary>
/// <returns></returns>
public ActionResult DishesPublish()
{
List <DishesCategory> categoryList = new DishesMananger().GetAllDishesCategory();
SelectList slist = new SelectList(categoryList, "CategoryId", "CategoryName", categoryList[0].CategoryId);
return(View("DishesPublish", slist));//通过强类型视图传递
}
/// <summary>
/// 美食展示
/// </summary>
/// <returns></returns>
public ActionResult DishesShow()
{
List <Dishes> dishList = new DishesMananger().GetAllDishes();
ViewBag.dishes = dishList;
return(View());
}
/// <summary>
/// 【2】根据分类查询菜品
/// </summary>
/// <param name="categoryId"></param>
/// <returns></returns>
public ActionResult QueryDishes(int categoryId)
{
List <Dishes> dishesList = new DishesMananger().GetAllDishes(categoryId);
ViewBag.dishesList = dishesList;
List <DishesCategory> categoryList = new DishesMananger().GetAllDishesCategory();
SelectList slist = new SelectList(categoryList, "CategoryId", "CategoryName", categoryId);
return(View("DishesManager", slist));
}
/// <summary>
/// 【1】菜品管理页面
/// </summary>
/// <returns></returns>
public ActionResult DishesManager()
{
//获取所有的菜品集合
List <Dishes> dishesList = new DishesMananger().GetAllDishes();
ViewBag.dishesList = dishesList;
//获取下拉列表的数据集合
List <DishesCategory> categoryList = new DishesMananger().GetAllDishesCategory();
SelectList slist = new SelectList(categoryList, "CategoryId", "CategoryName", categoryList[0].CategoryId);
return(View("DishesManager", slist));//通过强类型视图传递
}
/// <summary>
/// 【1】修改菜品页面
/// </summary>
/// <param name="dishesId"></param>
/// <returns></returns>
public ActionResult DishesUpdate(int dishesId)
{
//获取要修改的菜品对象
DishesMananger dishesManager = new DishesMananger();
Dishes dishes = dishesManager.GetDishesById(dishesId);
//获取菜品分类下来列表数据集合
List <DishesCategory> categoryList = new DishesMananger().GetAllDishesCategory();
SelectList slist = new SelectList(categoryList, "CategoryId", "CategoryName", dishes.CategoryId);
ViewBag.sList = slist;
return(View("DishesUpdate", dishes));
}
/// <summary>
/// 【3】删除菜品对象
/// </summary>
/// <param name="dishesId"></param>
/// <returns></returns>
public ActionResult DeleteDishes(int dishesId)
{
DishesMananger dishesManager = new DishesMananger();
Dishes dishes = dishesManager.GetDishesById(dishesId);
string filePath = Server.MapPath("~/Images/dishes/" + dishes.DishesImg);
int result = dishesManager.DeleteDishes(dishesId);
if (result > 0)
{
if (System.IO.File.Exists(filePath))
{
System.IO.File.Delete(filePath);
}
return(Content("success"));
}
else
{
return(Content("error"));
}
}
