public PostCategoriesController(IPostCategoryServices postCategoryServices,
IPostCategoryCommanderServices postCategoryCommanderServices, ILogger <PostCategoriesController> logger)
{
_postCategoryServices = postCategoryServices;
_postCategoryCommanderServices = postCategoryCommanderServices;
_logger = logger;
}
public async Task <IActionResult> DeleteConfirmed(int id,
[FromServices] IPostCategoryServices postCategoryServices)
{
var category = await categoryServices.GetCategory(id);
await categoryServices.DeleteCategory(category);
return(RedirectToAction("Index"));
}
private async Task DeletePostCategories(int id,
[FromServices] IPostCategoryServices postCategoryServices)
{
List <PostCategory> postCategories = await postCategoryServices.GetAllWithSameIdAsync(id);
foreach (PostCategory postCategory in postCategories)
{
await postCategoryServices.DeletePostCategory(postCategory);
}
}
private async Task DeleteExistingPostCategoryEntries(int id, IPostCategoryServices postCategoryServices)
{
var itemsToDelete = await postCategoryServices.GetAllWithSameIdAsync(id);
if (itemsToDelete != null && itemsToDelete.Count > 0)
{
foreach (var itemToDelete in itemsToDelete)
{
await postCategoryServices.DeletePostCategory(itemToDelete);
}
}
}
public async Task <IActionResult> Edit([Bind("Post, Photo, SelectedCategories")] CreatePostViewModel createPostViewModel,
[FromServices] IPostCategoryServices postCategoryServices,
[FromServices] ICategoryServices categoryServices)
{
if (ModelState.IsValid)
{
await postServices.UpdatePost(createPostViewModel.Post, createPostViewModel.Photo);
await UpdatePostCategory(createPostViewModel, postCategoryServices, categoryServices);
return(RedirectToAction("Index"));
}
return(View(createPostViewModel));
}
public async Task <IActionResult> DeleteConfirmed(int id,
[FromServices] IPostCategoryServices postcategoryServices,
[FromServices] ICommentServices commentServices)
{
await postServices.DeletePost(id);
//two steps underneath not necessary Entity frameworks allready solves it, but it was a good exercise ;-)
await DeleteExistingPostCategoryEntries(id, postcategoryServices);
await DeleteExistingPostCommentEntries(id, commentServices);
return(RedirectToAction("Index"));
}
private async Task SavePostCategory(CreatePostViewModel createPostViewModel, IPostCategoryServices postCategoryServices, ICategoryServices categoryServices)
{
if (createPostViewModel.SelectedCategories?.Count > 0)
{
foreach (string category in createPostViewModel.SelectedCategories)
{
Category cat = await categoryServices.GetCategory(new Category { Name = category });
PostCategory postCategory = new PostCategory {
PostId = createPostViewModel.Post.Id, CategoryId = cat.Id
};
await postCategoryServices.SavePostCategory(postCategory);
}
}
}
private async Task UpdatePostCategory(CreatePostViewModel createPostViewModel, IPostCategoryServices postCategoryServices, ICategoryServices categoryServices)
{
//Delete existing PostCategory entries
await DeleteExistingPostCategoryEntries(createPostViewModel.Post.Id, postCategoryServices);
//Add new PostCategory entries if there are any entries
if (createPostViewModel.SelectedCategories != null)
{
foreach (string category in createPostViewModel.SelectedCategories)
{
Category cat = await categoryServices.GetCategory(new Category { Name = category });
PostCategory postCategory = new PostCategory {
PostId = createPostViewModel.Post.Id, CategoryId = cat.Id
};
await postCategoryServices.SavePostCategory(postCategory);
}
}
}
