public Task BindModelAsync(ModelBindingContext bindingContext)
{
if (bindingContext == null)
{
throw new ArgumentNullException(nameof(bindingContext));
}
// _logger?.AttemptingToBindModel(bindingContext);
var modelName = bindingContext.ModelName;
var valueProviderResult = bindingContext.ValueProvider.GetValue(modelName);
if (valueProviderResult == ValueProviderResult.None)
{
//_logger?.FoundNoValueInRequest(bindingContext);
// no entry
//_logger?.DoneAttemptingToBindModel(bindingContext);
return(Task.CompletedTask);
}
var modelState = bindingContext.ModelState;
modelState.SetModelValue(modelName, valueProviderResult);
var metadata = bindingContext.ModelMetadata;
var type = metadata.UnderlyingOrModelType;
try
{
var value = valueProviderResult.FirstValue;
var culture = valueProviderResult.Culture;
object model;
if (string.IsNullOrWhiteSpace(value))
{
model = null;
}
else if (type == typeof(ModuleReleaseIdentifier))
{
var parts = value.Trim().Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (parts.Length != 2)
{
model = null;
}
else
{
var module = new ModuleIdentifier(parts[0]);
var version = ModuleVersion.Parse(parts[1]);
model = new ModuleReleaseIdentifier(module, version);
}
}
else
{
// unreachable
throw new NotSupportedException();
}
if (model == null && !metadata.IsReferenceOrNullableType)
{
modelState.TryAddModelError(
modelName,
metadata.ModelBindingMessageProvider.ValueMustNotBeNullAccessor(
valueProviderResult.ToString()));
}
else
{
bindingContext.Result = ModelBindingResult.Success(model);
}
}
catch (Exception exception)
{
modelState.TryAddModelError(modelName, exception, metadata);
}
//_logger?.DoneAttemptingToBindModel(bindingContext);
return(Task.CompletedTask);
}