diff --git a/Jellyfin.Api/ModelBinders/CommaDelimitedArrayModelBinder.cs b/Jellyfin.Api/ModelBinders/CommaDelimitedArrayModelBinder.cs new file mode 100644 index 000000000..1bfd741fd --- /dev/null +++ b/Jellyfin.Api/ModelBinders/CommaDelimitedArrayModelBinder.cs @@ -0,0 +1,42 @@ +using System; +using System.ComponentModel; +using System.Threading.Tasks; +using Microsoft.AspNetCore.Mvc.ModelBinding; + +namespace Jellyfin.Api.ModelBinders +{ + /// + /// Comma delimited array model binder. + /// Returns an empty array of specified type if there is no query parameter. + /// + public class CommaDelimitedArrayModelBinder : IModelBinder + { + /// + public Task BindModelAsync(ModelBindingContext bindingContext) + { + var valueProviderResult = bindingContext.ValueProvider.GetValue(bindingContext.ModelName); + var input = valueProviderResult.FirstValue; + var elementType = bindingContext.ModelType.GetElementType(); + + if (input != null) + { + var converter = TypeDescriptor.GetConverter(elementType); + var values = Array.ConvertAll( + input.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries), + x => { return converter.ConvertFromString(x != null ? x.Trim() : x); }); + + var typedValues = Array.CreateInstance(elementType, values.Length); + values.CopyTo(typedValues, 0); + + bindingContext.Result = ModelBindingResult.Success(typedValues); + } + else + { + var emptyResult = Array.CreateInstance(elementType, 0); + bindingContext.Result = ModelBindingResult.Success(emptyResult); + } + + return Task.CompletedTask; + } + } +}