// GET: /PostInfo/Create
public ActionResult Create(int cId)
{
ViewBag.CategoryId = new SelectList(db.Category.Where(c => c.CommunityId == cId), "Id", "Name");
// ViewBag.Author = new SelectList(db.UserInfo, "id", "Name");
ViewBag.cId = cId;
var postInfo = new PostInfo();
postInfo.Category = new List<Category>();
PopulateAssignedPostCategory(postInfo);
return View();
}
public ActionResult Create(PostInfo postinfo, string[] selectedCategory)
{
if (selectedCategory != null)
{
postinfo.Category = new List<Category>();
foreach (var category in selectedCategory)
{
var categoryToAdd = db.Category.Find(int.Parse(category));
postinfo.Category.Add(categoryToAdd);
}
}
if (ModelState.IsValid)
{
string cIds = Request.Form["CategoryId"];
int userId = ((UserInfo)Session["User"]).id;
postinfo.CategoryIds = cIds;
postinfo.Author = userId;
//图片
var file = Request.Files[0];
var img = MyHelper.fileSaveAs(file, 0, 2);
if (img.IndexOf("UpFile") > -1)
{
postinfo.ImageURL = img;
}
else
{
postinfo.ImageURL = "/Content/Images/images.jpg";
}
db.PostInfo.Add(postinfo);
db.SaveChanges();
return RedirectToAction("Index", new { cId = postinfo.CommunityId });
}
ViewBag.CategoryId = new SelectList(db.Category, "Id", "Name");
ViewBag.Author = new SelectList(db.UserInfo, "id", "Name", postinfo.Author);
PopulateAssignedPostCategory(postinfo);
return View(postinfo);
}
private void PopulateAssignedPostCategory(PostInfo Post)
{
var allcategory = db.Category;
var postCategory = new HashSet<int>(Post.Category.Select(c => c.Id));
var viewModel = new List<AssignedPostCategory>();
foreach (var category in allcategory)
{
viewModel.Add(new AssignedPostCategory
{
CategoryID = category.Id,
CategoryName = category.Name,
Assigned = postCategory.Contains(category.Id)
});
}
ViewBag.Category = viewModel;
}
private void UpdatePostCategory(string[] selectedCategory, PostInfo postToUpdate)
{
if (selectedCategory == null)
{
postToUpdate.Category = new List<Category>();
return;
}
var selectedCategoryHS = new HashSet<string>(selectedCategory);
var postCategory = new HashSet<int>
(postToUpdate.Category.Select(c => c.Id));
foreach (var category in db.Category)
{
if (selectedCategoryHS.Contains(category.Id.ToString()))
{
if (!postCategory.Contains(category.Id))
{
postToUpdate.Category.Add(category);
}
}
else
{
if (postCategory.Contains(category.Id))
{
postToUpdate.Category.Remove(category);
}
}
}
}
public ActionResult Edit(PostInfo postinfo)
{
if (ModelState.IsValid)
{
//图片
var file = Request.Files[0];
var img = MyHelper.fileSaveAs(file, 0, 2);
if (img.IndexOf("UpFile") > -1)
{
postinfo.ImageURL = img;
}
string cIds = Request.Form["CategoryId"];
postinfo.CategoryIds = cIds;
db.Entry(postinfo).State = EntityState.Modified;
db.SaveChanges();
return RedirectToAction("Index", new { cId = postinfo.CommunityId });
}
ViewBag.CategoryId = new SelectList(db.Category, "Id", "Name");
ViewBag.Author = new SelectList(db.UserInfo, "id", "Name", postinfo.Author);
return View(postinfo);
}
