Swagger参数的默认值

Question

如何在以下API生成的swagger中定义属性的默认值？

public class SearchQuery
{
        public string OrderBy { get; set; }

        [DefaultValue(OrderDirection.Descending)]
        public OrderDirection OrderDirection { get; set; } = OrderDirection.Descending;
}


public IActionResult SearchPendingCases(SearchQuery queryInput);

Swashbuckle生成OrderDirection作为必需参数.我想成为可选项并向客户端指示默认值(不确定swagger是否支持此功能).

我不喜欢使属性类型可以为空.还有其他选择吗？理想情况下使用内置类...

我使用Swashbuckle.AspNetCore - https://docs.microsoft.com/en-us/aspnet/core/tutorials/web-api-help-pages-using-swagger?tabs=visual-studio

Answer 1

我总是像这样设置参数本身的默认值：

public class TestPostController : ApiController
{
    public decimal Get(decimal x = 989898989898989898, decimal y = 1)
    {
        return x * y;
    }
}

这是 swagger-ui 上的样子：http :
//swashbuckletest.azurewebsites.net/swagger/ui/index#/TestPost/TestPost_Get

更新

在对评论的讨论之后，我更新了Swagger-Net以阅读DefaultValueAttribute通过反射这是我正在使用的示例类：

public class MyTest
{
    [MaxLength(250)]
    [DefaultValue("HelloWorld")]
    public string Name { get; set; }
    public bool IsPassing { get; set; }
}

这是 swagger json 的样子：

"MyTest": {
  "type": "object",
  "properties": {
    "Name": {
      "default": "HelloWorld",
      "maxLength": 250,
      "type": "string"
    },
    "IsPassing": {
      "type": "boolean"
    }
  },
  "xml": {
    "name": "MyTest"
  }
},

Swagger-Net的源代码在这里：https :
//github.com/heldersepu/Swagger-Net

测试项目的源代码在这里：https :
//github.com/heldersepu/SwashbuckleTest

Answer 2

如果您可以在控制器中执行此操作，则设置默认参数值的工作方式如下

// GET api/products
[HttpGet]
public IEnumerable<Product> Get(int count = 50)
{
    Conn mySqlGet = new Conn(_connstring);
    return mySqlGet.ProductList(count);
}

Answer 3

在 YAML 文件中，您可以定义需要哪些属性。此示例来自 NSwag 配置。

/SearchPendingCases:
    post:
      summary: Search pending cases
      description: Searches for pending cases and orders them
      parameters:
        - in: body
          name: SearchQuery 
          required: true
          schema:
            type: object
            required:
              - OrderBy
              # do not include OrderDirection here because it is optional
            properties:
              OrderBy:
                description: Name of property for ordering
                type: string
                # you can remove the following two lines 
                # if you do not want to check the string length
                minLength: 1    
                maxLength: 100
              OrderDirection:
                description: Optional order direction, default value: Descending
                type: string
                enum: [Ascending, Descending] # valid enum values
                default: Descending           # default value

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