Allow generating lowercase kebab with KebabCaseParameterTransformer

clickviewapp · Sep 18, 2024 · d69d634 · d69d634
1 parent 694a408
commit d69d634
Show file tree

Hide file tree

Showing 2 changed files with 22 additions and 3 deletions.
diff --git a/src/AspNetCore/AspNetCore/src/Routing/KebabCaseParameterTransformer.cs b/src/AspNetCore/AspNetCore/src/Routing/KebabCaseParameterTransformer.cs
@@ -6,9 +6,9 @@ namespace ClickView.GoodStuff.AspNetCore.Routing;
 /// <summary>
 /// Parameter transformer which converts route parameters to kebab-case
 /// </summary>
-public class KebabCaseParameterTransformer : IOutboundParameterTransformer
+public partial class KebabCaseParameterTransformer(bool lowercase = false) : IOutboundParameterTransformer
 {
-    private static readonly Regex ReplacerRegex = new("([a-z])([A-Z])", RegexOptions.Compiled);
+    private static readonly Regex ReplacerRegex = KebabRegex();
 
     /// <inheritdoc />
     public string? TransformOutbound(object? value)
@@ -19,6 +19,12 @@ public class KebabCaseParameterTransformer : IOutboundParameterTransformer
             return null;
 
         // Slugify value
-        return ReplacerRegex.Replace(str, "$1-$2");
+        var kebabCase = ReplacerRegex.Replace(str, "$1-$2");
+
+        // ToLower?
+        return lowercase ? kebabCase.ToLower() : kebabCase;
     }
+
+    [GeneratedRegex("([a-z])([A-Z])", RegexOptions.Compiled)]
+    private static partial Regex KebabRegex();
 }
diff --git a/src/AspNetCore/AspNetCore/test/Routing/KebabCaseParameterTransformerTests.cs b/src/AspNetCore/AspNetCore/test/Routing/KebabCaseParameterTransformerTests.cs
@@ -5,10 +5,23 @@ namespace ClickView.GoodStuff.AspNetCore.Tests.Routing;
 
 public class KebabCaseParameterTransformerTests
 {
+    [Theory]
+    [InlineData("hello", "Hello")]
+    [InlineData("hello-world", "HelloWorld")]
+    [InlineData("hello-hello-hello", "HelloHelloHello")]
+    [InlineData("lowercasewords", "lowercasewords")]
+    public void TransformOutbound_Lowercase(string expectedValue, object? inputValue)
+    {
+        var transformer = new KebabCaseParameterTransformer(true);
+
+        Assert.Equal(expectedValue, transformer.TransformOutbound(inputValue));
+    }
+
     [Theory]
     [InlineData("Hello", "Hello")]
     [InlineData("Hello-World", "HelloWorld")]
     [InlineData("Hello-Hello-Hello", "HelloHelloHello")]
+    [InlineData("lowercasewords", "lowercasewords")]
     public void TransformOutbound(string expectedValue, object? inputValue)
     {
         var transformer = new KebabCaseParameterTransformer();