Create an IRecord interface and have Record satisfy it.

SurrealDb.Net/Internals/SurrealDbEngine.Http.cs

@@ -133,7 +133,7 @@ public async Task Connect(CancellationToken cancellationToken)
     }
 
     public async Task<T> Create<T>(T data, CancellationToken cancellationToken)
-        where T : Record
+        where T : IRecord
     {
         if (data.Id is null)
             throw new SurrealDbException("Cannot create a record without an Id");
@@ -310,7 +310,7 @@ public async Task<TOutput> Merge<TMerge, TOutput>(
         TMerge data,
         CancellationToken cancellationToken
     )
-        where TMerge : Record
+        where TMerge : IRecord
     {
         if (data.Id is null)
             throw new SurrealDbException("Cannot create a record without an Id");
@@ -679,7 +679,7 @@ CancellationToken cancellationToken
     }
 
     public async Task<T> Upsert<T>(T data, CancellationToken cancellationToken)
-        where T : Record
+        where T : IRecord
     {
         if (data.Id is null)
             throw new SurrealDbException("Cannot create a record without an Id");

SurrealDb.Net/Internals/SurrealDbEngine.Interface.cs

@@ -16,14 +16,14 @@ public interface ISurrealDbEngine : IDisposable
     void Configure(string? ns, string? db, string? token = null);
     Task Connect(CancellationToken cancellationToken);
     Task<T> Create<T>(T data, CancellationToken cancellationToken)
-        where T : Record;
+        where T : IRecord;
     Task<T> Create<T>(string table, T? data, CancellationToken cancellationToken);
     Task<TOutput> Create<TData, TOutput>(
         StringRecordId recordId,
         TData? data,
         CancellationToken cancellationToken
     )
-        where TOutput : Record;
+        where TOutput : IRecord;
     Task Delete(string table, CancellationToken cancellationToken);
     Task<bool> Delete(Thing thing, CancellationToken cancellationToken);
     Task<bool> Delete(StringRecordId recordId, CancellationToken cancellationToken);
@@ -51,7 +51,7 @@ Task<SurrealDbLiveQuery<T>> LiveTable<T>(
         CancellationToken cancellationToken
     );
     Task<TOutput> Merge<TMerge, TOutput>(TMerge data, CancellationToken cancellationToken)
-        where TMerge : Record;
+        where TMerge : IRecord;
     Task<T> Merge<T>(
         Thing thing,
         Dictionary<string, object> data,
@@ -125,13 +125,13 @@ Task<Jwt> SignUp<T>(T scopeAuth, CancellationToken cancellationToken)
     Task<IEnumerable<T>> UpdateAll<T>(string table, T data, CancellationToken cancellationToken)
         where T : class;
     Task<T> Upsert<T>(T data, CancellationToken cancellationToken)
-        where T : Record;
+        where T : IRecord;
     Task<TOutput> Upsert<TData, TOutput>(
         StringRecordId recordId,
         TData data,
         CancellationToken cancellationToken
     )
-        where TOutput : Record;
+        where TOutput : IRecord;
     Task Use(string ns, string db, CancellationToken cancellationToken);
     Task<string> Version(CancellationToken cancellationToken);
 }

SurrealDb.Net/Internals/SurrealDbEngine.Ws.cs

@@ -345,7 +345,7 @@ await Authenticate(new Jwt { Token = bearerAuth.Token }, cancellationToken)
     }
 
     public async Task<T> Create<T>(T data, CancellationToken cancellationToken)
-        where T : Record
+        where T : IRecord
     {
         if (data.Id is null)
             throw new SurrealDbException("Cannot create a record without an Id");
@@ -607,7 +607,7 @@ public async Task<TOutput> Merge<TMerge, TOutput>(
         TMerge data,
         CancellationToken cancellationToken
     )
-        where TMerge : Record
+        where TMerge : IRecord
     {
         if (data.Id is null)
             throw new SurrealDbException("Cannot create a record without an Id");
@@ -923,7 +923,7 @@ CancellationToken cancellationToken
     }
 
     public async Task<T> Upsert<T>(T data, CancellationToken cancellationToken)
-        where T : Record
+        where T : IRecord
     {
         if (data.Id is null)
             throw new SurrealDbException("Cannot create a record without an Id");

SurrealDb.Net/Models/Record.cs

@@ -5,9 +5,23 @@
 namespace SurrealDb.Net.Models;
 
 /// <summary>
-/// The base record type.
+/// The abstract class for Record type.
 /// </summary>
-public abstract class Record
+public abstract class Record : IRecord
+{
+    /// <summary>
+    /// The id of the record
+    /// </summary>
+    [JsonConverter(typeof(ThingConverter))]
+    [JsonPropertyName("id")]
+    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)] // 💡 ignore null value to prevent failure on Create operation
+    public Thing? Id { get; set; }
+}
+
+/// <summary>
+/// The interface for Record type.
+/// </summary>
+public interface IRecord
 {
     /// <summary>
     /// The id of the record

SurrealDb.Net/SurrealDbClient.Interface.cs

@@ -76,7 +76,7 @@ public interface ISurrealDbClient : IDisposable
     /// <exception cref="InvalidOperationException"></exception>
     /// <exception cref="SurrealDbException"></exception>
     Task<T> Create<T>(T data, CancellationToken cancellationToken = default)
-        where T : Record;
+        where T : IRecord;
 
     /// <summary>
     /// Creates a record in a table in the database.
@@ -276,7 +276,7 @@ Task<SurrealDbLiveQuery<T>> LiveTable<T>(
     /// <exception cref="InvalidOperationException"></exception>
     /// <exception cref="SurrealDbException"></exception>
     Task<TOutput> Merge<TMerge, TOutput>(TMerge data, CancellationToken cancellationToken = default)
-        where TMerge : Record;
+        where TMerge : IRecord;
 
     /// <summary>
     /// Modifies the specified record in the database.
@@ -772,7 +772,7 @@ Task<IEnumerable<T>> UpdateAll<T>(
     /// <exception cref="InvalidOperationException"></exception>
     /// <exception cref="SurrealDbException"></exception>
     Task<T> Upsert<T>(T data, CancellationToken cancellationToken = default)
-        where T : Record;
+        where T : IRecord;
 
     /// <summary>
     /// Updates or creates the specified record in the database.

SurrealDb.Net/SurrealDbClient.cs

@@ -181,7 +181,7 @@ public Task Connect(CancellationToken cancellationToken = default)
     }
 
     public Task<T> Create<T>(T data, CancellationToken cancellationToken = default)
-        where T : Record
+        where T : IRecord
     {
         return _engine.Create(data, cancellationToken);
     }
@@ -288,7 +288,7 @@ public Task<TOutput> Merge<TMerge, TOutput>(
         TMerge data,
         CancellationToken cancellationToken = default
     )
-        where TMerge : Record
+        where TMerge : IRecord
     {
         return _engine.Merge<TMerge, TOutput>(data, cancellationToken);
     }
@@ -573,7 +573,7 @@ public Task<IEnumerable<T>> UpdateAll<T>(
     }
 
     public Task<T> Upsert<T>(T data, CancellationToken cancellationToken = default)
-        where T : Record
+        where T : IRecord
     {
         return _engine.Upsert(data, cancellationToken);
     }