add reference from log to meal

lib/models/nutrition/log.dart

@@ -31,6 +31,9 @@ class Log {
   @JsonKey(required: true)
   int? id;
 
+  @JsonKey(required: false, name: 'meal')
+  late int? mealId;
+
   @JsonKey(required: true, name: 'plan')
   int planId;
 
@@ -56,6 +59,7 @@ class Log {
 
   Log({
     this.id,
+    required this.mealId,
     required this.ingredientId,
     required this.weightUnitId,
     required this.amount,
@@ -70,6 +74,7 @@ class Log {
     weightUnitId = mealItem.weightUnitId;
     datetime = dateTime ?? DateTime.now();
     amount = mealItem.amount;
+    mealId = mealItem.id;
   }
 
   // Boilerplate

lib/models/nutrition/log.g.dart

@@ -8,13 +8,14 @@ part of 'log.dart';
 
 Log _$LogFromJson(Map<String, dynamic> json) {
   $checkKeys(json,
-      requiredKeys: const ['id', 'plan', 'datetime', 'ingredient', 'weight_unit', 'amount']);
+      requiredKeys: const ['id', 'meal', 'plan', 'datetime', 'ingredient', 'weight_unit', 'amount']);
   return Log(
     id: json['id'] as int?,
     ingredientId: json['ingredient'] as int,
     weightUnitId: json['weight_unit'] as int?,
     amount: stringToNum(json['amount'] as String?),
     planId: json['plan'] as int,
+    mealId: json['meal'] as int,
     datetime: DateTime.parse(json['datetime'] as String),
     comment: json['comment'] as String?,
   );
@@ -22,6 +23,7 @@ Log _$LogFromJson(Map<String, dynamic> json) {
 
 Map<String, dynamic> _$LogToJson(Log instance) => <String, dynamic>{
       'id': instance.id,
+      'meal': instance.mealId,
       'plan': instance.planId,
       'datetime': instance.datetime.toIso8601String(),
       'comment': instance.comment,