/// <summary>
/// Updates an existing entry in the context
/// </summary>
/// <param name="id">The id of the entry to be update, must match the id on the model</param>
/// <param name="model">The model with updated data</param>
/// <returns>A response model containing any validation results with previous and current versions of the model if successfully updated</returns>
public async Task <RepositoryActionResultModel <TModel> > Update(Guid id, TModel model)
{
// Could add some validation to see if the user is allowed to create this type of entity
// as part of a rule based system...?
// Validate the Id supplied against that of the model, bit of a crude check but could prevent some simple tampering
if (id != model.Id)
{
return(new RepositoryActionResultModel <TModel>
{
ResultType = ResultTypeEnum.FailedVerification,
PreviousVersion = model
});
}
// Validate the incoming model against the registered validator
var validationResult = await _validator.ValidateUpdate(model);
// Return a new result model if validation has failed
if (!validationResult.IsValid)
{
return(new RepositoryActionResultModel <TModel>
{
PreviousVersion = model,
ResultType = ResultTypeEnum.FailedValidation,
ValidationResult = validationResult
});
}
// Now we load the current entity version
var currentEntity = await _context.GetEntity <TEntity>(id);
// Check to see if the entity was found within the context
if (currentEntity == null)
{
// If not, return a not found message
return(new RepositoryActionResultModel <TModel>
{
ResultType = ResultTypeEnum.NotFound
});
}
// Create a representation as it is today
var currentModel = _mapper.CreateModel(currentEntity);
// Update the current entity with the new values passed in
_mapper.UpdateEntity(model, currentEntity);
// Assign the defaults for updated flags
currentEntity.DateUpdated = DateTime.UtcNow;
currentEntity.UpdatedByUserId = _authenticatedUser.UserId;
// Save to the db, this could be done in a
// unit of work pattern and saved later
await _context.SaveChangesAsync();
// Create a result containing old and new version, and return
return(new RepositoryActionResultModel <TModel>
{
ResultType = ResultTypeEnum.Success,
PreviousVersion = currentModel,
CurrentVersion = _mapper.CreateModel(currentEntity)
});
}