MVC Web Api 2 [FromUri]参数绑定和查询字符串不同

Question

I'm having a very weird case in my querystring for [FromUri]. The code below is my model parameter

public class PagingParams
{
    public PagingParams()
    {
        // set the default values
        this.PageNo = 1;
        this.PageSize = 30;
    }

    public int PageNo { get; set; }
    public int PageSize { get; set; }
    public string OrderBy { get; set; }
}

This is my controller code.

[Route("search")]
[ResponseType(typeof(PagingList<EmailTemplatesInfo>))]
public async Task<IHttpActionResult> Search(SearchParams searchOption, [FromUri] PagingParams p)
{
    // Check
    if (searchOption == null) return BadRequest("Invalid search options");

    // Filter EmailTemplate by Keyword
    var emailTemplate = db.EmailTemplates.Where(et => et.Name.Contains(searchOption.Keyword) ||
                                                      et.Description.Contains(searchOption.Keyword)).ProjectTo<EmailTemplatesInfo>();

    // Filter by Status
    emailTemplate = emailTemplate.Where(et => searchOption.Status.Contains(et.Status));

    // Check & Set
    if (p == null) p = new PagingParams();

    // Set Default Sort
    if (string.IsNullOrEmpty(p.OrderBy)) p.OrderBy = DEFAULT_ORDERBY;

    return Ok(new PagingList<EmailTemplatesInfo>(p, emailTemplate));

}

Base on the code above if i want to pass in Parameter Binding for PagingParam.

Should be this url

• search?PageNo=1&PageSize=10&OrderBy=CreatedOn

But the result i get in swashbuckle it become

• search?p.PageNo=1&p.PageSize=10&p.OrderBy=CreatedOn

the object name for PagingParam need to append in the querystring

Answer 1

修复它的正确方法：[FromUri（Name =“”）] PagingParams p

Answer 2

I found a fix which.
Required to write IFilterOperation to overwrite it..
It might not the best way but it solve my problem.

public class HandleFromUriParam : IOperationFilter
{
    public void Apply(Operation operation, SchemaRegistry schemaRegistry, ApiDescription apiDescription)
    {
        string[] splitter = null;
        var fromUriParams = apiDescription.ActionDescriptor.GetParameters().
            Where(param => param.GetCustomAttributes<FromUriAttribute>().Any()).ToArray();

        foreach (var param in fromUriParams)
        {
            var fromUriAttribute = param.GetCustomAttributes<FromUriAttribute>().FirstOrDefault();

            // Check
            if (fromUriAttribute != null)
            {
                var operationParam = operation.parameters;

                foreach (var item in operationParam)
                {
                    if (item.name.Contains(param.ParameterName))
                    {
                        splitter = item.name.Split('.');
                        item.name = splitter[splitter.Length - 1];
                    }
                }
            }
        }
    }
}