private CommentCategoryConfiguration BuildCommentCategories()
{
CommentCategoryConfiguration config = new CommentCategoryConfiguration();
//all keys that we care about start with "category_"
List <string> keys = (from key in Request.Form.AllKeys
where key.Contains("category_")
select key).ToList();
//we know this one for sure so no need to loop
config.Name = Request.Form["category_config_name"].ToString();
//but the rest are variable, so we need to loop
foreach (string key in keys)
{
//All category keys go something like "category_BLAH1_BLAH2_...". Based on how
//many underscores the current key has, we can determine what data it is
//providing to us
string[] pieces = key.Split('_');
//length of 2 is a category name
if (pieces.Length == 2)
{
int catId = 0;
Int32.TryParse(pieces[1], out catId);
//does the comment category already exist?
CommentCategory category = GetOrCreateCategory(config, catId);
category.Name = Request.Form[key].ToString();
}
//length of 4 is a category option
else if (pieces.Length == 4)
{
int catId = 0;
int order = 0;
Int32.TryParse(pieces[2], out catId);
Int32.TryParse(pieces[3], out order);
CommentCategory category = GetOrCreateCategory(config, catId);
CommentCategoryOption option = new CommentCategoryOption();
option.Name = Request.Form[key].ToString();
category.Options.Insert(order, option);
}
}
//when we're all done, zero out the category IDs to ensure that the items get
//added to the DB correctly
foreach (CommentCategory c in config.Categories)
{
c.ID = 0;
}
return(config);
}
private CommentCategory GetOrCreateCategory(CommentCategoryConfiguration config, int categoryId)
{
//does the comment category already exist?
CommentCategory category = (from c in config.Categories
where c.ID == categoryId
select c).FirstOrDefault();
if (category == null)
{
category = new CommentCategory();
category.ID = categoryId;
config.Categories.Add(category);
}
return(category);
}
public ActionResult Index(Assignment model)
{
Assignment = db.Assignments.Find(model.ID);
//are we loading a previous config?
if (Request.Form.AllKeys.Contains(previousButtonText))
{
//prevent wizard advancement
WasUpdateSuccessful = false;
//load previous comment categories
int assignmentId = 0;
Int32.TryParse(Request.Form[previousSelect], out assignmentId);
if (assignmentId != 0)
{
Assignment oldAssignment = db.Assignments.Find(assignmentId);
Index();
Assignment.CommentCategory = oldAssignment.CommentCategory;
return(View(Assignment));
}
else
{
return(Index());
}
}
else
{
//normal postback
CommentCategoryConfiguration config = BuildCommentCategories();
Assignment.CommentCategory = config;
Assignment.CommentCategoryID = 0;
db.SaveChanges();
WasUpdateSuccessful = true;
return(base.PostBack(Assignment));
}
}
