Unchase Swashbuckle Asp.Net Core Extensions is a library contains a bunch of extensions (filters) for Swashbuckle.AspNetCore.

The project is developed and maintained by Nikolay Chebotov (Unchase).

Breaking Changes

• Since v2.0.0 supports Swashbuckle.AspNetCore 5.0.0 with breaking changes.

For old versions see README_OLD.md.

• Since v2.3.0 there are breaking changes in Startup.cs

Compatibility

Swashbuckle Version	ASP.NET Core	Swagger / OpenAPI Spec.	This extension Version
master	>= 2.0.0	2.0, 3.0	master
6.1.5	>= 2.0.0	2.0, 3.0	v2.6.1
6.1.0	>= 2.0.0	2.0, 3.0	v2.6.0
6.0.0	>= 2.0.0	2.0, 3.0	v2.5.1
5.0.0	>= 2.0.0	2.0, 3.0	v2.0.0
4.0.0	>= 2.0.0, < 3.0.0	2.0	v1.1.4

Getting Started

To use the extensions, install NuGet package into your project:

Manually with the NuGet Package Manager:

Install-Package Unchase.Swashbuckle.AspNetCore.Extensions

Using the .NET CLI:

dotnet add package Unchase.Swashbuckle.AspNetCore.Extensions --version {version}

Where {version} is the version of the package you want to install. For example, dotnet add package Unchase.Swashbuckle.AspNetCore.Extensions --version 2.4.0

Then use whichever extensions (filters) you need.

Extensions (Filters) use

Ensure your API actions and parameters are decorated with explicit "Http" and "From" (optional) bindings.

[HttpPost]
public void CreateProduct([FromBody]Product product)
...

[HttpGet]
public IEnumerable<Product> SearchProducts([FromQuery]string keywords)
...

In the Configure method, insert middleware to expose the generated Swagger as JSON endpoint(s):

app.UseSwagger();

Optionally, insert the swagger-ui middleware if you want to expose interactive documentation, specifying the Swagger JSON endpoint(s) to power it from:

app.UseSwaggerUI(c =>
{
    c.SwaggerEndpoint("/swagger/v1/swagger.json", "My API V1");
});

1. Fix enums in OpenApi document:

• In the ConfigureServices method of Startup.cs, inside your AddSwaggerGen call, enable whichever extensions (filters) you need:

using Unchase.Swashbuckle.AspNetCore.Extensions.Extensions;
using Unchase.Swashbuckle.AspNetCore.Extensions.Filters;

• Since v2.3.0:

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    services.AddControllers();

    // Register the Swagger generator
    services.AddSwaggerGen(options =>
    {
        options.SwaggerDoc("v1", new OpenApiInfo { Title = "My API", Version = "v1" });

        // use it if you want to hide Paths and Definitions from OpenApi documentation correctly
        options.UseAllOfToExtendReferenceSchemas();

        // if you want to add xml comments from summary and remarks into the swagger documentation, first of all add:
        // you can exclude remarks for concrete types
        var xmlFilePath = Path.Combine(AppContext.BaseDirectory, "WebApi3.1-Swashbuckle.xml");
        options.IncludeXmlCommentsWithRemarks(xmlFilePath, false,
            typeof(ComplicatedClass),
            typeof(InnerEnum));

        // or add without remarks
        //options.IncludeXmlComments(xmlFilePath);

        // if you want to add xml comments from inheritdocs (from summary and remarks) into the swagger documentation, add:
        // you can exclude remarks for concrete types
        options.IncludeXmlCommentsFromInheritDocs(includeRemarks: true, excludedTypes: typeof(string));

        // Add filters to fix enums
        // use by default:
        //options.AddEnumsWithValuesFixFilters();

        // or configured:
        options.AddEnumsWithValuesFixFilters(services, o =>
        {
            // add schema filter to fix enums (add 'x-enumNames' for NSwag or its alias from XEnumNamesAlias) in schema
            o.ApplySchemaFilter = true;

            // alias for replacing 'x-enumNames' in swagger document
            o.XEnumNamesAlias = "x-enum-varnames";

            // alias for replacing 'x-enumDescriptions' in swagger document
            o.XEnumDescriptionsAlias = "x-enum-descriptions";

            // add parameter filter to fix enums (add 'x-enumNames' for NSwag or its alias from XEnumNamesAlias) in schema parameters
            o.ApplyParameterFilter = true;

            // add document filter to fix enums displaying in swagger document
            o.ApplyDocumentFilter = true;

            // add descriptions from DescriptionAttribute or xml-comments to fix enums (add 'x-enumDescriptions' or its alias from XEnumDescriptionsAlias for schema extensions) for applied filters
            o.IncludeDescriptions = true;

            // add remarks for descriptions from xml-comments
            o.IncludeXEnumRemarks = true;

            // get descriptions from DescriptionAttribute then from xml-comments
            o.DescriptionSource = DescriptionSources.DescriptionAttributesThenXmlComments;

            // new line for enum values descriptions
            // o.NewLine = Environment.NewLine;
            o.NewLine = "\n";

            // get descriptions from xml-file comments on the specified path
            // should use "options.IncludeXmlComments(xmlFilePath);" before
            o.IncludeXmlCommentsFrom(xmlFilePath);
            // the same for another xml-files...
        });
    });
}

• For older versions:

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    // Add framework services.
    services.AddMvc();

    services.AddSwaggerGen(options =>
    {
        options.SwaggerDoc("v1", new OpenApiInfo { Title = "My API", Version = "v1" });

        // if you want to add xml comments into the swagger documentation, first of all add:
        var filePath = Path.Combine(AppContext.BaseDirectory, "WebApi3.1-Swashbuckle.xml");
        options.IncludeXmlComments(filePath);

        // Add filters to fix enums
        options.AddEnumsWithValuesFixFilters(true);

        // or custom use:
        //options.SchemaFilter<XEnumNamesSchemaFilter>(true); // add schema filter to fix enums (add 'x-enumNames' for NSwag) in schema
        //options.ParameterFilter<XEnumNamesParameterFilter>(true); // add parameter filter to fix enums (add 'x-enumNames' for NSwag) in schema parameters
        //options.DocumentFilter<DisplayEnumsWithValuesDocumentFilter>(true); // add document filter to fix enums displaying in swagger document
    });
}

2. Hide Paths and Definitions from OpenApi documentation without accepted roles:

• In the ConfigureServices method of Startup.cs, inside your AddSwaggerGen call, enable HidePathsAndDefinitionsByRolesDocumentFilter document filter:

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    ...

    services.AddSwaggerGen(options =>
    {
        ...

        // remove Paths and Defenitions from OpenApi documentation without accepted roles
        options.DocumentFilter<HidePathsAndDefinitionsByRolesDocumentFilter>(new List<string> { "AcceptedRole" });
    });
}

• Since v2.2.1 you can hide Paths and Definitions from OpenApi documentation for specific controller action (or all actions) without accepted roles like this:

// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    //...    

    // enable middleware to serve generated Swagger as a JSON endpoint.
    app.UseSwagger(c =>
    {
        c.PreSerializeFilters.Add((openApiDoc, httpRequest) =>
        {
            // remove Paths and Components from OpenApi documentation for specific controller action without accepted roles
            openApiDoc.RemovePathsAndComponentsWithoutAcceptedRolesFor<SomeController>(controller => nameof(controller.SomeAction), new List<string> {"AcceptedRole"});

            // or
            //openApiDoc.RemovePathsAndComponentsWithoutAcceptedRolesFor<SomeController>(nameof(SomeController.SomeAction), new List<string> { "AcceptedRole" });


            // remove Paths and Components from OpenApi documentation for all controller actions without accepted roles
            openApiDoc.RemovePathsAndComponentsWithoutAcceptedRolesForController<AnotherController>(new List<string> {"AcceptedRole"});

            // or you can get accepted roles by httpRequest like this:
            //openApiDoc.RemovePathsAndComponentsWithoutAcceptedRolesForController<AnotherController>(GetAcceptedRolesByRemoteIp(httpRequest.HttpContext.Connection.RemoteIpAddress));
        });
    });

    //...
}

Validated actions must be annotated with the one of HttpMethodAttribute (HttpGetAttribute, HttpPostAttribute, HttpDeleteAttribute, HttpPutAttribute, HttpPatchAttribute) attributes.

3. Append action count into the SwaggetTag's descriptions in OpenApi document:

• In the ConfigureServices method of Startup.cs, inside your AddSwaggerGen call, enable AppendActionCountToTagSummaryDocumentFilter document filter:

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    ...

    services.AddSwaggerGen(options =>
    {
        ...

        // enable openApi Annotations
        options.EnableAnnotations();

        // add action count (with message template) into the SwaggerTag's descriptions
        // you can use it after "HidePathsAndDefinitionsByRolesDocumentFilter"
        options.DocumentFilter<AppendActionCountToTagSummaryDocumentFilter>("(count: {0})");

        ...
    });
}

In the controller need to use SwaggerTag attribute:

using Swashbuckle.AspNetCore.Annotations;

[SwaggerTag("Controller for todo")]
public class TodoController : ControllerBase
...

4. Change all responses for specific HTTP status codes in OpenApi document:

• In the ConfigureServices method of Startup.cs, inside your AddSwaggerGen call, enable ChangeAllResponsesByHttpStatusCode<T> extension (filter) with whichever HTTP status codes you need:

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    ...

    services.AddSwaggerGen(options =>
    {
        ...

        // change responses for specific HTTP status code ("200")
        options.ChangeAllResponsesByHttpStatusCode(
            httpStatusCode: 200,
            responseDescription: "200 status code description",
            responseExampleOption : ResponseExampleOptions.AddNew, // add new response examples
            responseExample: new TodoItem { Tag = Tag.Workout, Id = 111, IsComplete = false, Name = "test" }); // some class for response examples
        
        // change responses for specific HTTP status code ("400" (HttpStatusCode.BadRequest))
        options.ChangeAllResponsesByHttpStatusCode(
            httpStatusCode: HttpStatusCode.BadRequest,
            responseDescription: "400 status code description",
            responseExampleOption: ResponseExampleOptions.Clear, // claer response examples
            responseExample: new ComplicatedClass()); // some class for response examples
        
        // change responses for specific HTTP status code ("201" (StatusCodes.Status201Created))
        options.ChangeAllResponsesByHttpStatusCode(
            httpStatusCode: StatusCodes.Status201Created,
            responseDescription: "201 status code description",
            responseExampleOption: ResponseExampleOptions.None, // do nothing with response examples
            responseExample: new ComplicatedClass()); // some class for response examples

        ...
    });
}

5. Order tags by name in OpenApi document:

• In the ConfigureServices method of Startup.cs, inside your AddSwaggerGen call, enable TagOrderByNameDocumentFilter document filter:

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    ...

    services.AddSwaggerGen(options =>
    {
        ...

        // order tags by name
        options.DocumentFilter<TagOrderByNameDocumentFilter>();

        ...
    });
}

6. Add xml comments from summary and remarks into the swagger documentation:

• Since v2.4.0 in the ConfigureServices method of Startup.cs, inside your AddSwaggerGen call, add IncludeXmlCommentsWithRemarks option instead of IncludeXmlComments option:

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    ...

    services.AddSwaggerGen(options =>
    {
        ...

        // add xml comments from summary and remarks into the swagger documentation
        options.IncludeXmlCommentsWithRemarks("<xml_File_Full_Path>");

        // add xml comments from summary and remarks into the swagger documentation
        // with excluding remarks for concrete types (since v2.4.1)
        var xmlFilePath = Path.Combine(AppContext.BaseDirectory, "WebApi3.1-Swashbuckle.xml");
        options.IncludeXmlCommentsWithRemarks(xmlFilePath, false,
            typeof(ComplicatedClass),
            typeof(InnerEnum));

        ...
    });
}

7. Add xml comments from <inheritdoc/> (from summary and remarks) into the swagger documentation:

• Since v2.5.0 in the ConfigureServices method of Startup.cs, inside your AddSwaggerGen call, add IncludeXmlCommentsFromInheritDocs option:

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    ...

    services.AddSwaggerGen(options =>
    {
        ...

        // add xml comments from inheritdocs (from summary and remarks) into the swagger documentation, add:
        // with excluding concrete types
        options.IncludeXmlCommentsFromInheritDocs(includeRemarks: true, excludedTypes: typeof(string));

        ...
    });
}

Builds status

Status	Value
Build
Tests
Buid History
GitHub Release
GitHub Release Date
GitHub Release Downloads
Nuget Version
Nuget Downloads

Features

Fix enums

• Add an output enums integer values with there strings like 0 = FirstEnumValue without a StringEnumConverter in swaggerUI and schema (by default enums will output only their integer values)

• Add description to each enum value that has an [Description] attribute in swaggerUI and schema - should use options.DocumentFilter<DisplayEnumsWithValuesDocumentFilter>(true); or options.AddEnumsWithValuesFixFilters(true);

  In Swashbuckle SwaggerUI:

  

  In schema parameters:

  

  In schema definitions:

  

  To show enum values descriptions you should use [Description] attribute in your code:

  /// <summary>
  /// Title enum.
  /// </summary>
  [DataContract]
  public enum Title
  {
      /// <summary>
      /// None.
      /// </summary>
      [Description("None enum description")]
      [EnumMember]
      None = 0,
  
      /// <summary>
      /// Miss.
      /// </summary>
      [Description("Miss enum description")]
      [EnumMember]
      Miss,
  
      /// <summary>
      /// Mr.
      /// </summary>
      [Description("Mr enum description")]
      [EnumMember]
      Mr
  }
  
  ...
  
  /// <summary>
  /// Sample Person request and response.
  /// </summary>
  public class SamplePersonRequestResponse
  {
      /// <summary>
      /// Sample Person title.
      /// </summary>
      public Title Title { get; set; }
  
      /// <summary>
      /// Sample Person age.
      /// </summary>
      public int Age { get; set; }
  
      /// <summary>
      /// Sample Person firstname.
      /// </summary>
      [Description("The first name of the person")]
      public string FirstName { get; set; }
  
      /// <summary>
      /// Sample Person income.
      /// </summary>
      public decimal? Income { get; set; }
  }

• Fix enum values in generated by NSwagStudio or Unchase OpenAPI Connected Service client classes:

  /// <summary>Sample Person title.
  ///
  /// 0 = None (None enum description)
  ///
  /// 1 = Miss (Miss enum description)
  ///
  /// 2 = Mr (Mr enum description)</summary>
  [System.CodeDom.Compiler.GeneratedCode("NJsonSchema", "9.13.35.0 (Newtonsoft.Json v11.0.0.0)")]
  public enum Title
  {
      None = 0,
  
      Miss = 1,
  
      Mr = 2,
  
  }

Hide Paths and Defenitions from OpenApi documentation

• Hide all OpenAPIDocument Paths and Defenitions without accepted roles:

  

  You should use AuthorizeAttribute for methods or controllers:

  ...
  public class SamplePersonController : ControllerBase
  {
      // this method will not be hidden with using 'swaggerDoc.HidePathItemsWithoutAcceptedRoles(new List<string> {"AcceptedRole"});'
      [Authorize(Roles = "AcceptedRole")]
      [HttpGet]
      public ActionResult<SamplePersonRequestResponse> Get(Title title)
      {
          ...
      }
  
      // this method will be hidden with using 'swaggerDoc.HidePathItemsWithoutAcceptedRoles(new List<string> {"AcceptedRole"});'
      [Authorize(Roles = "NotAcceptedRole")]
      [HttpPost]
      public ActionResult<SamplePersonRequestResponse> Post([FromBody] SamplePersonRequestResponse request)
      {
          ...
      }
  }

Append action count into the SwaggetTag's descriptions

You should use SwaggerTagAttribute for controllers:

[SwaggerTag("SamplePerson description")]
public class SamplePersonController : ControllerBase
{
    ...
}

Change responses for specific HTTP status codes

For example:

Add xml comments from summary and remarks into the swagger documentation

For code:

/// <summary>
/// Inner class
/// </summary>
/// <remarks>
/// Inner class remarks - class
/// </remarks>
public class InnerClass
{
    /// <summary>
    /// List of inner enums
    /// </summary>
    /// <remarks>
    /// List of inner enums remarks - property
    /// </remarks>
    public List<InnerEnum> InnerEnum { get; set; }

    /// <summary>
    /// Second inner class
    /// </summary>
    /// <remarks>
    /// Second inner class remarks - property
    /// </remarks>
    public SecondInnerClass<SecondInnerEnum> SecondInnerClass { get; set; }
}

/// <summary>
/// Inner enum
/// </summary>
/// <remarks>
/// Inner enum remarks - enum
/// </remarks>
public enum InnerEnum
{
    /// <summary>
    /// Inner enum value
    /// </summary>
    /// <remarks>
    /// Inner enum value remarks
    /// </remarks>
    Value = 1
}

/// <summary>
/// Second inner class
/// </summary>
/// <remarks>
/// Second inner class remarks - class
/// </remarks>
public class SecondInnerClass<T> where T : Enum
{
    /// <summary>
    /// Second inner enum
    /// </summary>
    /// <remarks>
    /// Second inner enum remarks - property
    /// </remarks>
    public T InnerEnum { get; set; }
}

/// <summary>
/// Second inner enum
/// </summary>
/// <remarks>
/// Second inner enum remarks - enum
/// </remarks>
public enum SecondInnerEnum
{
    /// <summary>
    /// Second inner enum value
    /// </summary>
    /// <remarks>
    /// Second inner enum value remarks
    /// </remarks>
    Value = 0
}

Add xml comments from <inheritdoc/> (from summary and remarks) into the swagger documentation

For code:

/// <inheritdoc cref="IInheritDocClass"/>
public class InheritDocClass : IInheritDocClass
{
    /// <inheritdoc/>
    public string Name { get; set; }

    /// <inheritdoc/>
    public string Common { get; set; }

    /// <inheritdoc/>
    public InheritEnum InheritEnum { get; set; }
}

/// <summary>
/// InheritDocClass - inheritdoc
/// </summary>
/// <remarks>
/// InheritDocClass remarks - inheritdoc
/// </remarks>
public interface IInheritDocClass : IInheritDocCommon
{
    /// <summary>
    /// Name - inheritdoc
    /// </summary>
    /// <remarks>
    /// Name remarks - inheritdoc
    /// </remarks>
    public string Name { get; set; }
}

/// <summary>
/// IInheritDocCommon interface
/// </summary>
/// <remarks>
/// IInheritDocCommon interface remarks
/// </remarks>
public interface IInheritDocCommon
{
    /// <summary>
    /// Common - inheritdoc (inner)
    /// </summary>
    /// <remarks>
    /// Common remarks - inheritdoc (inner)
    /// </remarks>
    public string Common { get; set; }

    /// <summary>
    /// InheritEnum - inheritdoc (inner)
    /// </summary>
    public InheritEnum InheritEnum { get; set; }
}

/// <summary>
/// Inherit enum - enum
/// </summary>
/// <remarks>
/// Inherit enum remarks - enum
/// </remarks>
public enum InheritEnum
{
    /// <summary>
    /// Inherit enum Value
    /// </summary>
    /// <remarks>
    /// Inherit enum Value remarks
    /// </remarks>
    Value = 0
}

HowTos

• Add HowTos in a future
• ... request for HowTo you need

Roadmap

See the changelog for the further development plans and version history.

Feedback

Please feel free to add your request a feature or report a bug. Thank you in advance!

Thank me!

If you like what I am doing and you would like to thank me, please consider:

Thank you for your support!

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Copyright © 2019 Nikolay Chebotov (Unchase) - Provided under the Apache License 2.0.