Patch REST API to Partial Update MongoDB in .NET

Question

I have an object

{
  \"_id\": \"testobject\",
  \"A\": \"First line\",
  \"B\": \"Second line\",
  \"C\": \"Third line\"
}

I want to send a RE

Answer 1

In ASP.net core 3.1 you can use the JsonPatchDocument and do a replace in mongodb

JsonPatch in ASP.NET Core web API

[HttpPatch]
public IActionResult JsonPatchWithModelState(
    [FromBody] JsonPatchDocument patchDoc)
{
    if (patchDoc != null)
    {
        var customer = CreateCustomer();

        patchDoc.ApplyTo(customer, ModelState);

        if (!ModelState.IsValid)
        {
            return BadRequest(ModelState);
        }

        return new ObjectResult(customer);
    }
    else
    {
        return BadRequest(ModelState);
    }
}