I've got an object in my project with circular references. I've put [JsonIgnore] above the field like so:
[JsonIgnore]
public virtual Foobar ChildObject { get; set; }
I'm still getting circular reference errors when I serialize the object. The only fields that do not have JsonIgnore are string fields and should not cause this. Is there something else I need to do to get JsonIgnore to work?
I had incorrectly resolved the JsonIgnore reference.
Note that this attribute exists in more than one namespace:
I had resolved this in VS to System.Text.Json.Serialization.JsonIgnore - however I was using the Newtonsoft library for my actual Serialise/Deserialise - and hence the attribute was ignored. Changing the reference to Newtonsoft.Json.JsonIgnore resolved.
Json(model) from an MVC ActionYou likely have some other property that links back to its parent. Use the ReferenceLoopHandling.Ignore setting to prevent self-referencing loops.
using Newtonsoft.Json;
JsonSerializerSettings jsSettings = new JsonSerializerSettings();
jsSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
string json = JsonConvert.SerializeObject(foobars, Formatting.None, jsSettings);
JSon(models,"text/json",JsonRequestBehavior.AlloGet) ?
return Content(JsonConvert.SerializeObject(foobars, Formatting.None, jsSettings), "application/json");
If anyone needs an ASP.Net Core implementation of ignore child references, here it is.
public void ConfigureServices(IServiceCollection services)
{
...
services.AddMvc()
.AddJsonOptions(
options => options.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore
);
...
}
src: https://learn.microsoft.com/en-us/ef/core/querying/related-data
Using this one solved my issue
using System.Text.Json.Serialization;
Newtonsoft.JsonIn case it helps anyone, I'm on .NET 8 and Newtonsoft.Json isn't supported yet. So, "explicitly" adding this help:
using System.Text.Json.Serialization;
