Do not generate Content for request parameters in OpenAPI (#45404)

Author: captainsafia

src/OpenApi/src/OpenApiGenerator.cs

@@ -77,7 +77,7 @@ private OpenApiOperation GetOperation(string httpMethod, MethodInfo methodInfo,
             Summary = metadata.GetMetadata<IEndpointSummaryMetadata>()?.Summary,
             Description = metadata.GetMetadata<IEndpointDescriptionMetadata>()?.Description,
             Tags = GetOperationTags(methodInfo, metadata),
-            Parameters = GetOpenApiParameters(methodInfo, metadata, pattern, disableInferredBody),
+            Parameters = GetOpenApiParameters(methodInfo, pattern, disableInferredBody),
             RequestBody = GetOpenApiRequestBody(methodInfo, metadata, pattern),
             Responses = GetOpenApiResponses(methodInfo, metadata)
         };
@@ -356,7 +356,7 @@ private List<OpenApiTag> GetOperationTags(MethodInfo methodInfo, EndpointMetadat
         return new List<OpenApiTag>() { new OpenApiTag() { Name = controllerName } };
     }
 
-    private List<OpenApiParameter> GetOpenApiParameters(MethodInfo methodInfo, EndpointMetadataCollection metadata, RoutePattern pattern, bool disableInferredBody)
+    private List<OpenApiParameter> GetOpenApiParameters(MethodInfo methodInfo, RoutePattern pattern, bool disableInferredBody)
     {
         var parameters = PropertyAsParameterInfo.Flatten(methodInfo.GetParameters(), ParameterBindingMethodCache);
         var openApiParameters = new List<OpenApiParameter>();
@@ -384,7 +384,6 @@ private List<OpenApiParameter> GetOpenApiParameters(MethodInfo methodInfo, Endpo
             {
                 Name = name,
                 In = parameterLocation,
-                Content = GetOpenApiParameterContent(metadata),
                 Required = !isOptional
 
             };
@@ -394,21 +393,6 @@ private List<OpenApiParameter> GetOpenApiParameters(MethodInfo methodInfo, Endpo
         return openApiParameters;
     }
 
-    private static Dictionary<string, OpenApiMediaType> GetOpenApiParameterContent(EndpointMetadataCollection metadata)
-    {
-        var openApiParameterContent = new Dictionary<string, OpenApiMediaType>();
-        var acceptsMetadata = metadata.GetMetadata<IAcceptsMetadata>();
-        if (acceptsMetadata is not null)
-        {
-            foreach (var contentType in acceptsMetadata.ContentTypes)
-            {
-                openApiParameterContent.Add(contentType, new OpenApiMediaType());
-            }
-        }
-
-        return openApiParameterContent;
-    }
-
     private (bool isBodyOrForm, ParameterLocation? locatedIn) GetOpenApiParameterLocation(ParameterInfo parameter, RoutePattern pattern, bool disableInferredBody)
     {
         var attributes = parameter.GetCustomAttributes();

src/OpenApi/test/OpenApiGeneratorTests.cs

@@ -322,6 +322,7 @@ static void AssertPathParameter(OpenApiOperation operation)
         {
             var param = Assert.Single(operation.Parameters);
             Assert.Equal(ParameterLocation.Path, param.In);
+            Assert.Empty(param.Content);
         }
 
         AssertPathParameter(GetOpenApiOperation((int foo) => { }, "/{foo}"));
@@ -335,6 +336,7 @@ static void AssertPathParameter(OpenApiOperation operation)
         {
             var param = Assert.Single(operation.Parameters);
             Assert.Equal(ParameterLocation.Path, param.In);
+            Assert.Empty(param.Content);
         }
         AssertPathParameter(GetOpenApiOperation((TryParseStringRecord foo) => { }, pattern: "/{foo}"));
     }
@@ -346,6 +348,7 @@ static void AssertPathParameter(OpenApiOperation operation)
         {
             var param = Assert.Single(operation.Parameters);
             Assert.Equal(ParameterLocation.Path, param.In);
+            Assert.Empty(param.Content);
         }
 
         AssertPathParameter(GetOpenApiOperation((int? foo) => { }, "/{foo}"));
@@ -359,6 +362,7 @@ static void AssertPathParameter(OpenApiOperation operation)
         {
             var param = Assert.Single(operation.Parameters);
             Assert.Equal(ParameterLocation.Path, param.In);
+            Assert.Empty(param.Content);
         }
         AssertPathParameter(GetOpenApiOperation((TryParseStringRecordStruct foo) => { }, pattern: "/{foo}"));
     }
@@ -370,6 +374,7 @@ static void AssertQueryParameter(OpenApiOperation operation, string type)
         {
             var param = Assert.Single(operation.Parameters);
             Assert.Equal(ParameterLocation.Query, param.In);
+            Assert.Empty(param.Content);
         }
 
         AssertQueryParameter(GetOpenApiOperation((int foo) => { }, "/"), "integer");
@@ -388,6 +393,7 @@ public void AddsFromHeaderParameterAsHeader()
         var param = Assert.Single(operation.Parameters);
 
         Assert.Equal(ParameterLocation.Header, param.In);
+        Assert.Empty(param.Content);
     }
 
     [Fact]
@@ -430,11 +436,13 @@ public void AddsMultipleParameters()
         Assert.Equal("foo", fooParam.Name);
         Assert.Equal(ParameterLocation.Path, fooParam.In);
         Assert.True(fooParam.Required);
+        Assert.Empty(fooParam.Content);
 
         var barParam = operation.Parameters[1];
         Assert.Equal("bar", barParam.Name);
         Assert.Equal(ParameterLocation.Query, barParam.In);
         Assert.True(barParam.Required);
+        Assert.Empty(barParam.Content);
 
         var fromBodyParam = operation.RequestBody;
         var fromBodyContent = Assert.Single(fromBodyParam.Content);
@@ -455,12 +463,14 @@ static void AssertParameters(OpenApiOperation operation, string capturedName = "
                     Assert.Equal(capturedName, param.Name);
                     Assert.Equal(ParameterLocation.Path, param.In);
                     Assert.True(param.Required);
+                    Assert.Empty(param.Content);
                 },
                 param =>
                 {
                     Assert.Equal("Bar", param.Name);
                     Assert.Equal(ParameterLocation.Query, param.In);
                     Assert.True(param.Required);
+                    Assert.Empty(param.Content);
                 }
             );
         }
@@ -485,11 +495,13 @@ public void TestParameterIsRequired()
         Assert.Equal("foo", fooParam.Name);
         Assert.Equal(ParameterLocation.Path, fooParam.In);
         Assert.True(fooParam.Required);
+        Assert.Empty(fooParam.Content);
 
         var barParam = operation.Parameters[1];
         Assert.Equal("bar", barParam.Name);
         Assert.Equal(ParameterLocation.Query, barParam.In);
         Assert.False(barParam.Required);
+        Assert.Empty(barParam.Content);
     }
 
     [Fact]