C#•2y ago•

11 replies

System.Text.Json.JsonException: A possible object cycle was detected

I'm working on an API and I have Doctor and Appointment models. The Doctor model has a

List<Appointment>

List<Appointment>

as a prop and Appointment has a Doctor prop too. I understand what's going on but couldn't find a solution for it yet: when I fetch a doctor and

Include(doc => doc.Appointments)

Include(doc => doc.Appointments)

, it seems like, since the Appointment could have a reference to that same Doctor (and it does), they would end up including each other infinitely.

The thing is, if I add a

[JsonIgnore]

[JsonIgnore]

to the Appointment's 'Doctor' property, things start working (since the Doctor won't be present among Appointment's properties) but it won't be serialized when I'm fetching Appointments, even with

Include(appt => appt.Doctor)

Include(appt => appt.Doctor)

. Another odd thing is that Doctor is not added automatically when I fetch an Appointment, but it still complains when

Include(doc => doc.Appointments)

Include(doc => doc.Appointments)

even though I'm not doing

ThenInclude(appt => appt.Doctor)

ThenInclude(appt => appt.Doctor)

right after.

The error code:

System.Text.Json.JsonException: A possible object cycle was detected. This can either be due to a cycle or if the object depth is larger than the maximum allowed depth of 32. Consider using ReferenceHandler.Preserve on JsonSerializerOptions to support cycles. Path: $.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.User.

System.Text.Json.JsonException: A possible object cycle was detected. This can either be due to a cycle or if the object depth is larger than the maximum allowed depth of 32. Consider using ReferenceHandler.Preserve on JsonSerializerOptions to support cycles. Path: $.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.User.

The

ReferenceHandler.Preserve

ReferenceHandler.Preserve

made it work but it adds $id and $values to the json object and, at first, seemed like a hack (I'm ok with it in case it's not). Any ideas?

System.Text.Json.JsonException: A possible object cycle was detected

I'm working on an API and I have Doctor and Appointment models. The Doctor model has a

List<Appointment>

List<Appointment>

as a prop and Appointment has a Doctor prop too. I understand what's going on but couldn't find a solution for it yet: when I fetch a doctor and

Include(doc => doc.Appointments)

Include(doc => doc.Appointments)

, it seems like, since the Appointment could have a reference to that same Doctor (and it does), they would end up including each other infinitely.

The thing is, if I add a

[JsonIgnore]

[JsonIgnore]

to the Appointment's 'Doctor' property, things start working (since the Doctor won't be present among Appointment's properties) but it won't be serialized when I'm fetching Appointments, even with

Include(appt => appt.Doctor)

Include(appt => appt.Doctor)

. Another odd thing is that Doctor is not added automatically when I fetch an Appointment, but it still complains when

Include(doc => doc.Appointments)

Include(doc => doc.Appointments)

even though I'm not doing

ThenInclude(appt => appt.Doctor)

ThenInclude(appt => appt.Doctor)

right after.

The error code:

System.Text.Json.JsonException: A possible object cycle was detected. This can either be due to a cycle or if the object depth is larger than the maximum allowed depth of 32. Consider using ReferenceHandler.Preserve on JsonSerializerOptions to support cycles. Path: $.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.User.

System.Text.Json.JsonException: A possible object cycle was detected. This can either be due to a cycle or if the object depth is larger than the maximum allowed depth of 32. Consider using ReferenceHandler.Preserve on JsonSerializerOptions to support cycles. Path: $.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.Appointments.Doctor.User.

The

ReferenceHandler.Preserve

ReferenceHandler.Preserve

made it work but it adds $id and $values to the json object and, at first, seemed like a hack (I'm ok with it in case it's not). Any ideas?

System.Text.Json.JsonException: A possible object cycle was detected

Similar Threads

System.Text.Json.JsonException: A possible object cycle was detected

Similar Threads

Similar Threads

Similar Threads