Implement session creation

pkg/model/ent/schema/codesSequence.go

@@ -0,0 +1,10 @@
+package schema
+
+import (
+	"entgo.io/ent"
+)
+
+// Provides a DBMS independent way of obtaining unique values
+type CodesSequence struct {
+	ent.Schema
+}

pkg/model/ent/schema/game.go

@@ -17,6 +17,7 @@ func (Game) Fields() []ent.Field {
 		field.Text("name").MaxLen(64),
 		field.Time("created").Immutable(),
 		field.Text("author").MaxLen(64),
+		field.Text("code").MinLen(1).Unique(),
 	}
 }
 

pkg/model/ent/schema/session.go

@@ -16,7 +16,7 @@ func (Session) Fields() []ent.Field {
 		field.UUID("id", uuid.Nil).Immutable(),
 		field.Time("created").Immutable(),
 		field.Time("started").Nillable().Optional(),
-		field.String("code").MinLen(6).MaxLen(6).Immutable().Unique(),
+		field.String("code").MinLen(1).Immutable().Unique(),
 	}
 }