Merge pull request #537 from appwrite/feat-fix-flutter-realtime-model

fix realtime timestamp data type

Author: christyjacob4

templates/dart/lib/src/models/model.dart.twig

@@ -35,7 +35,7 @@ class {{ definition.name | caseUcfirst | overrideIdentifier }} implements Model
     Map<String, dynamic> toMap() {
         return {
 {% for property in definition.properties %}
-            "{{ property.name | escapeDollarSign }}": {% if property.sub_schema %}{% if property.type == 'array' %}{{property.name | escapeKeyword}}.map((p) => p.toMap()){% else %}{{property.name | escapeKeyword}}.toMap(){% endif %}{% else %}{{property.name | escapeKeyword }}{% endif %},
+            "{{ property.name | escapeDollarSign }}": {% if property.sub_schema %}{% if property.type == 'array' %}{{property.name | escapeKeyword}}.map((p) => p.toMap()).toList(){% else %}{{property.name | escapeKeyword}}.toMap(){% endif %}{% else %}{{property.name | escapeKeyword }}{% endif %},
 {% endfor %}
 {% if definition.additionalProperties %}
             "data": data,

templates/flutter/lib/src/realtime_message.dart.twig

@@ -5,7 +5,7 @@ class RealtimeMessage {
   final List<String> events;
   final Map<String, dynamic> payload;
   final List<String> channels;
-  final int timestamp;
+  final String timestamp;
   RealtimeMessage({
     required this.events,
     required this.payload,
@@ -17,7 +17,7 @@ class RealtimeMessage {
     List<String>? events,
     Map<String, dynamic>? payload,
     List<String>? channels,
-    int? timestamp,
+    String? timestamp,
   }) {
     return RealtimeMessage(
       events: events ?? this.events,