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Fix to make required and nullable properties nullable in schema #2879

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merged 3 commits into from
May 14, 2024
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Fix to make required and nullable properties nullable in schema #2879

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4cc5dd7
Fix to make required and nullable properties nullable in schema
keahpeters May 14, 2024
12f1ac1
Fix unit test
keahpeters May 14, 2024
b2a106e
Added test for type with required nullable properties
keahpeters May 14, 2024
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19 changes: 4 additions & 15 deletions src/Swashbuckle.AspNetCore.SwaggerGen/SchemaGenerator/SchemaGenerator.cs
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Is this change just reverting back completely to the old behaviour from 6.5.0 and undoing the support for required? Or am I misinterpreting the diff?

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@keahpeters keahpeters May 14, 2024 •
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It's only reverting the way we set Nullable and MinLength. This didn't need to be changed since the property can still be null or an empty string with the required keyword. The required keyword will still be supported with this change.

Original file line number Diff line number Diff line change
Expand Up @@ -68,24 +68,13 @@ private OpenApiSchema GenerateSchemaForMember(
{
var requiredAttribute = customAttributes.OfType<RequiredAttribute>().FirstOrDefault();

schema.ReadOnly = dataProperty.IsReadOnly;
schema.WriteOnly = dataProperty.IsWriteOnly;

#if NET7_0_OR_GREATER
var hasRequiredMemberAttribute = customAttributes.OfType<System.Runtime.CompilerServices.RequiredMemberAttribute>().Any();

schema.Nullable = _generatorOptions.SupportNonNullableReferenceTypes
? dataProperty.IsNullable && requiredAttribute == null && !hasRequiredMemberAttribute && !memberInfo.IsNonNullableReferenceType()
: dataProperty.IsNullable && requiredAttribute == null && !hasRequiredMemberAttribute;

schema.MinLength = modelType == typeof(string) && (hasRequiredMemberAttribute || requiredAttribute is { AllowEmptyStrings: false }) ? 1 : null;
#else
schema.Nullable = _generatorOptions.SupportNonNullableReferenceTypes
? dataProperty.IsNullable && requiredAttribute==null && !memberInfo.IsNonNullableReferenceType()
: dataProperty.IsNullable && requiredAttribute==null;
? dataProperty.IsNullable && requiredAttribute == null && !memberInfo.IsNonNullableReferenceType()
: dataProperty.IsNullable && requiredAttribute == null;

schema.ReadOnly = dataProperty.IsReadOnly;
schema.WriteOnly = dataProperty.IsWriteOnly;
schema.MinLength = modelType == typeof(string) && requiredAttribute is { AllowEmptyStrings: false } ? 1 : null;
#endif
}

var defaultValueAttribute = customAttributes.OfType<DefaultValueAttribute>().FirstOrDefault();
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14 changes: 9 additions & 5 deletions ...shbuckle.AspNetCore.SwaggerGen.Test/SchemaGenerator/JsonSerializerSchemaGeneratorTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -367,9 +367,10 @@ public void GenerateSchema_SetsReadOnlyAndWriteOnlyFlags_IfPropertyIsRestricted(
}

#if NET7_0_OR_GREATER
public class TypeWithRequiredProperty
public class TypeWithRequiredProperties
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{
public required string RequiredProperty { get; set; }
public required string RequiredString { get; set; }
public required int RequiredInt { get; set; }
}

public class TypeWithRequiredPropertyAndValidationAttribute
Expand All @@ -383,10 +384,13 @@ public void GenerateSchema_SetsRequired_IfPropertyHasRequiredKeyword()
{
var schemaRepository = new SchemaRepository();

var referenceSchema = Subject().GenerateSchema(typeof(TypeWithRequiredProperty), schemaRepository);
var referenceSchema = Subject().GenerateSchema(typeof(TypeWithRequiredProperties), schemaRepository);

var schema = schemaRepository.Schemas[referenceSchema.Reference.Id];
Assert.Equal(new[] { "RequiredProperty" }, schema.Required.ToArray());
Assert.True(schema.Properties["RequiredString"].Nullable);
Assert.Equal(new[] { "RequiredString" }, schema.Required.ToArray());
Assert.False(schema.Properties["RequiredInt"].Nullable);
Assert.Equal(new[] { "RequiredInt" }, schema.Required.ToArray());
}

[Fact]
Expand All @@ -398,7 +402,7 @@ public void GenerateSchema_SetsRequired_IfPropertyHasRequiredKeywordAndValidatio

var schema = schemaRepository.Schemas[referenceSchema.Reference.Id];
Assert.Equal(1, schema.Properties["RequiredProperty"].MinLength);
Assert.False(schema.Properties["RequiredProperty"].Nullable);
Assert.True(schema.Properties["RequiredProperty"].Nullable);
Assert.Equal(new[] { "RequiredProperty" }, schema.Required.ToArray());
}
#endif
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