public static bool TryGetMigrationKind(this ModelBindingContext bindingContext, string name, ref bool hasValue, out int?result)
{
result = null;
var valueObject = bindingContext.ValueProvider.GetValue(name);
if (valueObject != ValueProviderResult.None)
{
bindingContext.ModelState.SetModelValue(name, valueObject);
if (!string.IsNullOrEmpty(valueObject.FirstValue))
{
if (!MigrationKinds.TryParse(valueObject.FirstValue, out var kind))
{
bindingContext.ModelState.TryAddModelError(name, "Invalid migration kind.");
return(false);
}
hasValue = true;
result = kind;
}
}
return(true);
}
public static bool TryGetMigrationKindList(this ModelBindingContext bindingContext, string name, ref bool hasValue, out List <int> result)
{
result = null;
var valueObject = bindingContext.ValueProvider.GetValue(name);
if (valueObject != ValueProviderResult.None)
{
bindingContext.ModelState.SetModelValue(name, valueObject);
if (!string.IsNullOrEmpty(valueObject.FirstValue))
{
var rawValues = valueObject.FirstValue.Split(',', StringSplitOptions.RemoveEmptyEntries);
if (rawValues.Length == 0)
{
bindingContext.ModelState.TryAddModelError(name, "List should contain at least one item.");
return(false);
}
hasValue = true;
result = new List <int>(rawValues.Length);
foreach (var rawValue in rawValues)
{
if (!MigrationKinds.TryParse(rawValue, out var kind))
{
bindingContext.ModelState.TryAddModelError(name, "List contains invalid migration kind.");
return(false);
}
hasValue = true;
result.Add(kind);
}
}
}
return(true);
}