private void UpdateTutorialCategories(string[] selectedCategories, Tutorial tutorialToUpdate)
{
if (selectedCategories == null)
{
tutorialToUpdate.TutorialCategories = new List <TutorialCategory>();
return;
}
var selectedCategoriesHS = new HashSet <string>(selectedCategories);
var tutorialCategories = new HashSet <int>(tutorialToUpdate.TutorialCategories.Select(t => t.Category.Id));
foreach (var category in _context.Categories)
{
if (selectedCategoriesHS.Contains(category.Id.ToString()))
{
if (!tutorialCategories.Contains(category.Id))
{
tutorialToUpdate.TutorialCategories.Add(new TutorialCategory {
TutorialId = tutorialToUpdate.Id, CategoryId = category.Id
});
}
}
else
{
if (tutorialCategories.Contains(category.Id))
{
TutorialCategory categoryToRemove = tutorialToUpdate.TutorialCategories.FirstOrDefault(i => i.CategoryId == category.Id);
_context.Remove(categoryToRemove);
}
}
}
}
public static SideMenuModelItem HydrateSideMenuModel(TutorialCategory tutorial)
{
return(new SideMenuModelItem
{
ID = tutorial.ID,
Title = tutorial.Name
});
}
public async Task <TutorialCategoryResponse> CreateAsync(TutorialCategory category)
{
try
{
category.OwnerId = _loggedUserId;
_unitOfWork.TutorialCategories.Add(category);
await _unitOfWork.SaveAsync();
return(new TutorialCategoryResponse(category));
}
catch (DbUpdateException sqlEx) when(sqlEx.InnerException.HResult == (-2146232060))
{
return(new TutorialCategoryResponse($"Zadane url již existuje", "UrlTitle"));
}
catch (Exception ex)
{
return(new TutorialCategoryResponse($"An error occurred when saving the category: {ex.Message}", ""));
}
}
public async Task <IActionResult> Create([Bind("Id,Title,Content,AuthorId")] Tutorial tutorial, string[] selectedCategories)
{
if (selectedCategories != null)
{
tutorial.TutorialCategories = new List <TutorialCategory>();
foreach (var category in selectedCategories)
{
var categoryToAdd = new TutorialCategory {
TutorialId = tutorial.Id, CategoryId = int.Parse(category)
};
tutorial.TutorialCategories.Add(categoryToAdd);
}
}
if (ModelState.IsValid)
{
_context.Add(tutorial);
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
ViewData["AuthorId"] = new SelectList(_context.Users, "Id", "UserName", tutorial.AuthorId);
PopulateCategoryData(tutorial);
return(View(tutorial));
}
/// <summary>
/// Creates a success response.
/// </summary>
/// <param name="category">Saved category.</param>
/// <returns>Response.</returns>
public TutorialCategoryResponse(TutorialCategory category) : this(true, string.Empty, category, "")
{
}
private TutorialCategoryResponse(bool success, string message, TutorialCategory category, string modelStateErrorKey) : base(success, message, modelStateErrorKey)
{
Category = category;
}
public void Update(TutorialCategory entity)
{
this.Name = entity.Name;
}