43 lines
1.5 KiB
C#
43 lines
1.5 KiB
C#
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using System;
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using System.ComponentModel;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Mvc.ModelBinding;
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namespace Jellyfin.Api.ModelBinders
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{
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/// <summary>
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/// Comma delimited array model binder.
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/// Returns an empty array of specified type if there is no query parameter.
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/// </summary>
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public class CommaDelimitedArrayModelBinder : IModelBinder
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{
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/// <inheritdoc/>
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public Task BindModelAsync(ModelBindingContext bindingContext)
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{
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var valueProviderResult = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
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var input = valueProviderResult.FirstValue;
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var elementType = bindingContext.ModelType.GetElementType();
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if (input != null)
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{
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var converter = TypeDescriptor.GetConverter(elementType);
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var values = Array.ConvertAll(
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input.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries),
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x => { return converter.ConvertFromString(x != null ? x.Trim() : x); });
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var typedValues = Array.CreateInstance(elementType, values.Length);
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values.CopyTo(typedValues, 0);
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bindingContext.Result = ModelBindingResult.Success(typedValues);
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}
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else
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{
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var emptyResult = Array.CreateInstance(elementType, 0);
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bindingContext.Result = ModelBindingResult.Success(emptyResult);
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}
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return Task.CompletedTask;
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}
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}
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}
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