protected virtual void PrepareModel(ArticleModel model, Article article = null)
{
if (model == null)
throw new ArgumentNullException("model");
//所有分类
model.Categories.AddRange(
_categoryService.GetAllCategory().Select(t => new SelectListItem
{
Text = t.Name,
Value = t.Id.ToString(),
})
);
//所有标签
model.Tags = _articleService.GetAllTag().Select(t => new KeyValueModel
{
Text = t.Name,
Value = t.Id.ToString()
}).ToList();
//选中标签
if (article != null)
{
model.SelectedTags = article.Tags.Select(t => t.Id).ToList();
}
}
public ActionResult Create(ArticleModel model, bool continueEditing)
{
if (ModelState.IsValid)
{
var article = model.ToEntity();
article.CreateDate = DateTime.Now;
article.UpdateDate = DateTime.Now;
if (model.CategoryId == 0)
article.CategoryId = null;
//标签
foreach (var id in model.SelectedTags)
{
article.Tags.Add(_articleService.GetTagById(id));
}
_articleService.InsertArticle(article);
SuccessNotification("添加成功");
return continueEditing ? RedirectToAction("Edit", new { id = article.Id }) : RedirectToAction("List");
}
PrepareModel(model);
return View(model);
}
public ActionResult Edit(ArticleModel model, bool continueEditing)
{
var article = _articleService.GetArticleById(model.Id);
if (ModelState.IsValid)
{
int prevPictureId = article.PictureId;
article = model.ToEntity(article);
article.UpdateDate = DateTime.Now;
if (model.CategoryId == 0)
article.CategoryId = null;
//标签
var allTags = _articleService.GetAllTag().ToList();
foreach (var tag in allTags)
{
if (model.SelectedTags != null && model.SelectedTags.Contains(tag.Id))
{
if (article.Tags.Count(t => t.Id == tag.Id) == 0)
{
article.Tags.Add(tag);
}
}
else
{
if (article.Tags.Count(t => t.Id == tag.Id) > 0)
{
article.Tags.Remove(tag);
}
}
}
_articleService.UpdateArticle(article);
//图片处理, 删除旧图片
if (prevPictureId > 0 && prevPictureId != article.PictureId)
{
var prevPicture = _pictureService.GetPictureById(prevPictureId);
if (prevPicture != null)
_pictureService.DeletePicture(prevPicture);
}
SuccessNotification("保存成功");
return continueEditing ? RedirectToAction("Edit", new { id = article.Id }) : RedirectToAction("List");
}
PrepareModel(model, article);
return View(model);
}
public ActionResult Create()
{
var model = new ArticleModel();
PrepareModel(model);
return View(model);
}