public static void LoadCollection <TEntity, TCollection>(
this IDbContext ctx,
TEntity entity,
Expression <Func <TEntity, ICollection <TCollection> > > navigationProperty,
bool force = false,
Func <IQueryable <TCollection>, IQueryable <TCollection> > queryAction = null)
where TEntity : BaseEntity
where TCollection : BaseEntity
{
Guard.NotNull(entity, nameof(entity));
Guard.NotNull(navigationProperty, nameof(navigationProperty));
var dbContext = ctx as DbContext;
if (dbContext == null)
{
throw new NotSupportedException("The IDbContext instance does not inherit from DbContext (EF)");
}
var entry = dbContext.Entry(entity);
var collection = entry.Collection(navigationProperty);
// Avoid System.InvalidOperationException: Member 'IsLoaded' cannot be called for property...
if (entry.State == System.Data.Entity.EntityState.Detached)
{
ctx.Attach(entity);
}
if (force)
{
collection.IsLoaded = false;
}
if (!collection.IsLoaded)
{
if (queryAction != null || ctx.ForceNoTracking)
{
var query = !ctx.ForceNoTracking
? collection.Query()
: collection.Query().AsNoTracking();
var myQuery = queryAction != null
? queryAction(query)
: query;
collection.CurrentValue = myQuery.ToList();
}
else
{
collection.Load();
}
collection.IsLoaded = true;
}
}
public ActionResult Edit(Review review)
{
if (ModelState.IsValid)
{
//review.Body = Sanitizer.GetSafeHtmlFragment(review.Body);
_db.Attach(review);
_db.SaveChanges();
return(RedirectToAction("Index"));
}
return(View(review));
}
public static void AttachRange <TEntity>(this IDbContext ctx, IEnumerable <TEntity> entities) where TEntity : BaseEntity
{
entities.Each(x => ctx.Attach(x));
}
/// <summary>
/// Attaches the entity to the underlying context of this reposity.
/// It is placed in the Unchanged state as if it was just read from the database
/// </summary>
/// <param name="entity">The entity to attach</param>
/// <param name="markDirty">Marks the newly attached entity as modified</param>
/// <returns></returns>
public void Attach(T entity, bool markDirty = false)
{
_context.Attach(entity, markDirty);
}
