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c#.netattributesmetadata

Combining multiple Attributes for a class methods

Writing ASP.NET controllers, requires often to add multiple attributes to action methods, often repeatedly. It would be useful to create custom attributes that automatically combine other attributes to maintain a cleaner source code.

This post shows how to do it for properties, using class System.ComponentModel.PropertyDescriptor. Unfortunately there is not a System.ComponentModel.MethodDescriptor, so that example cannot translated to work on methods.

Does anyone know if this is possible and how?

Example:

    [<HttpGet("list-products")>]
    [<ProducesResponseType(typeof<Dto.Product list>, StatusCodes.Status200OK)>]
    [<ProducesResponseType(typeof<Dto.Exception>, StatusCodes.Status500InternalServerError)>]
    member this.ListProducts() = this.Http(Market.Product.all() |> AsyncSeq.map Dto.Of)

    [<HttpGet("find-product")>]
    [<ProducesResponseType(typeof<Dto.Product>, StatusCodes.Status200OK)>]
    [<ProducesResponseType(StatusCodes.Status404NotFound)>]
    [<ProducesResponseType(typeof<Dto.Exception>, StatusCodes.Status500InternalServerError)>]
    member this.FindProduct([<Required>] product: string) = this.Http(Market.Product.withName_ product |> Async.map (Option.map Dto.Of >> Option.toObj))

    [<HttpPost("start-feed")>]
    [<ProducesResponseType(StatusCodes.Status200OK)>]
    [<ProducesResponseType(typeof<Dto.Exception>, StatusCodes.Status500InternalServerError)>]
    member this.StartFeed([<Required>] contract: string) = this.ForwardToService(MineService, StartFeed contract)

    [<HttpPost("stop-feed")>]
    [<ProducesResponseType(StatusCodes.Status200OK)>]
    [<ProducesResponseType(typeof<Dto.Exception>, StatusCodes.Status500InternalServerError)>]
    member this.StopFeed([<Required>] contract: string) = this.ForwardToService(MineService, StopFeed contract)
   
    [<HttpPost("recalc-bars")>]
    [<ProducesResponseType(StatusCodes.Status200OK)>]
    [<ProducesResponseType(typeof<Dto.Exception>, StatusCodes.Status500InternalServerError)>]
    member this.RecalcBars([<Required>] product: string, fromUtc_: Nullable<DateTime>) = this.ForwardToService(MineService, RecalcBars (product, Option.ofNullable fromUtc_))

    [<HttpPost("reset-chart")>]
    [<ProducesResponseType(StatusCodes.Status200OK)>]
    [<ProducesResponseType(typeof<Dto.Exception>, StatusCodes.Status500InternalServerError)>]
    member this.ResetChart([<Required>] product: string) = this.ForwardToService(ChartService, ResetChart product)
Solution

  • As per @vernou suggestion, In this case I reached my objective using Api conventions