I am using JsonPatchDocument to update my entities, this works well if the JSON looks like the following
[{ "op": "replace", "path": "/leadStatus", "value": "2" },]When i create the object it converts it with the Operations node
var patchDoc = new JsonPatchDocument<LeadTransDetail>();patchDoc.Replace("leadStatus", statusId); {"Operations": [{"value": 2,"path": "/leadStatus","op": "replace","from": "string"}]}if the JSON object looks like that the Patch does not work. I believe that i need to convert it using
public static void ConfigureApis(HttpConfiguration config){config.Formatters.Add(new JsonPatchFormatter());}And that should sort it out, the problem is i am using .net core so not 100% sure where to add the JsonPatchFormatter
Best Answer
I created the following sample controller using the version 1.0 of ASP.NET Core. If I send your JSON-Patch-Request
[{ "op": "replace", "path": "/leadStatus", "value": "2" },]then after calling ApplyTo the property leadStatus will be changed. No need to configure JsonPatchFormatter. A good blog post by Ben Foster helped me a lot in gaining a more solid understanding - http://benfoster.io/blog/aspnet-core-json-patch-partial-api-updates
public class PatchController : Controller{[HttpPatch]public IActionResult Patch([FromBody] JsonPatchDocument<LeadTransDetail> patchDocument){if (!ModelState.IsValid){return new BadRequestObjectResult(ModelState);}var leadTransDetail = new LeadTransDetail{LeadStatus = 5};patchDocument.ApplyTo(leadTransDetail, ModelState);if (!ModelState.IsValid){return new BadRequestObjectResult(ModelState);}return Ok(leadTransDetail);}}public class LeadTransDetail{public int LeadStatus { get; set; }}Hope this helps.