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Fixing the sort by

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This commit is contained in:
Zoe Roux 2020-07-06 20:38:34 +02:00
parent 4357d599e4
commit 63a85124b7
1 changed files with 11 additions and 4 deletions
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13
Kyoo.Common/Controllers/IRepository.cs
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@ -31,7 +31,10 @@ namespace Kyoo.Controllers
Key = key;
Descendant = descendant;
if (!(Key.Body is MemberExpression))
if (Key.Body is MemberExpression ||
Key.Body.NodeType == ExpressionType.Convert && ((UnaryExpression)Key.Body).Operand is MemberExpression)
return;
throw new ArgumentException("The given sort key is not valid.");
}
@ -48,12 +51,16 @@ namespace Kyoo.Controllers
string order = sortBy.Contains(':') ? sortBy.Substring(sortBy.IndexOf(':') + 1) : null;
ParameterExpression param = Expression.Parameter(typeof(T), "x");
Key = Expression.Lambda<Func<T, object>>(Expression.Property(param, key), param);
MemberExpression property = Expression.Property(param, key);
Key = property.Type.IsValueType
? Expression.Lambda<Func<T, object>>(Expression.Convert(property, typeof(object)), param)
: Expression.Lambda<Func<T, object>>(property, param);
Descendant = order switch
{
"desc" => true,
"asc" => false,
"" => false,
null => false,
_ => throw new ArgumentException($"The sort order, if set, should be :asc or :desc but it was :{order}.")
};
}