/// <summary>
/// Executes a command in a "Patch" style, allowing for a partial update of a resource. In
/// order to support this method, there must be a query handler defined that implements
/// IQueryHandler<GetQuery<TCommand>> so the full command object can be fecthed
/// prior to patching. Once patched and executed, a formatted IHttpActionResult is returned,
/// handling any validation errors and permission errors.
/// </summary>
/// <typeparam name="TCommand">Type of the command to execute</typeparam>
/// <param name="controller">The Controller instance using the helper</param>
/// <param name="delta">The delta of the command to patch and execute</param>
public async Task <IActionResult> RunCommandAsync <TCommand>(ControllerBase controller, IDelta <TCommand> delta) where TCommand : class, ICommand
{
var query = new GetUpdateCommandQuery <TCommand>();
var command = await _queryExecutor.ExecuteAsync(query);
if (delta != null)
{
delta.Patch(command);
}
return(await RunCommandAsync(controller, command));
}
/// <summary>
/// Executes a command in a "Patch" style, allowing for a partial update of a resource. In
/// order to support this method, there must be a query handler defined that implements
/// IQueryHandler<GetByIdQuery<TCommand>> so the full command object can be fecthed
/// prior to patching. Once patched and executed, a formatted JsonResult is returned,
/// handling any validation errors and permission errors.
/// </summary>
/// <typeparam name="TCommand">Type of the command to execute</typeparam>
/// <param name="delta">The delta of the command to patch and execute</param>
public async Task <JsonResult> RunCommandAsync <TCommand>(int id, IDelta <TCommand> delta) where TCommand : class, ICommand
{
var query = new GetUpdateCommandByIdQuery <TCommand>(id);
var command = await _queryExecutor.ExecuteAsync(query);
if (delta != null)
{
delta.Patch(command);
}
return(await RunCommandAsync(command));
}
public async Task <IActionResult> PatchDraft(int pageId, [FromBody] IDelta <UpdatePageDraftVersionCommand> delta)
{
// Custom patching because we may need to create a draft version first
var query = new GetUpdateCommandByIdQuery <UpdatePageDraftVersionCommand>(pageId);
var command = await _queryExecutor.ExecuteAsync(query);
if (command == null)
{
var createDraftCommand = new AddPageDraftVersionCommand();
createDraftCommand.PageId = pageId;
await _commandExecutor.ExecuteAsync(createDraftCommand);
command = await _queryExecutor.ExecuteAsync(query);
}
delta.Patch(command);
return(await _apiResponseHelper.RunCommandAsync(this, command));
}
public void Patch(TKey key, IDelta <TEntity> item)
{
var entity = _db.Set <TEntity>().Find(key);
if (entity == null)
{
var msg = $"The key ({key}) isn't found in the {typeof(TEntity).Name} table.";
throw new NotFoundException(msg);
}
item.Patch(entity);
var a = _db.ChangeTracker.Entries();
if (a.Any(x => x.State == EntityState.Modified || x.State == EntityState.Added || x.State == EntityState.Deleted))
{
_db.SaveChanges();
}
}