Adding paginate and simplePagination

lib/src/database/pagination.dart

@@ -0,0 +1,41 @@
+class PaginationResult {
+  final int total;
+  final int perPage;
+  final int page;
+  final int lastPage;
+  final int? previousPage;
+  final int? nextPage;
+  final String nextLink;
+  final String previousLink;
+  final String lastLink;
+  final String firstLink;
+  final List<dynamic> data;
+
+  PaginationResult({
+    required this.total,
+    required this.perPage,
+    required this.page,
+    required this.lastPage,
+    required this.previousPage,
+    required this.nextPage,
+    required this.nextLink,
+    required this.previousLink,
+    required this.lastLink,
+    required this.firstLink,
+    required this.data,
+  });
+
+  Map response() => {
+        'total': total,
+        'perPage': perPage,
+        'page': page,
+        'lastPage': lastPage,
+        'previousPage': previousPage,
+        'nextPage': nextPage,
+        'nextLink': nextLink,
+        'previousLink': previousLink,
+        'lastLink': lastLink,
+        'firstLink': firstLink,
+        'data': data,
+      };
+}

lib/src/database/simple_pagination.dart

@@ -0,0 +1,26 @@
+class SimplePaginationResult {
+  final int? next;
+  final int? previous;
+  final int last;
+  final int first;
+  final int total;
+  final List<dynamic> data;
+
+  SimplePaginationResult({
+    required this.next,
+    required this.previous,
+    required this.last,
+    this.first = 1,
+    required this.total,
+    required this.data,
+  });
+
+  Map response() => {
+        'next': next,
+        'previous': previous,
+        'last': last,
+        'first': first,
+        'total': total,
+        'data': data, // Serialize data objects to JSON
+      };
+}

lib/src/extensions/pagination_extension.dart

@@ -0,0 +1,25 @@
+import 'package:vania/src/database/pagination.dart';
+import 'package:vania/vania.dart';
+
+extension Pagination on QueryBuilder {
+  Future<Map> paginate([int perPage = 15, int page = 1]) async {
+    final String basePath = Config().get('url');
+    final total = await count();
+    final lastPage = (total / perPage).ceil();
+    final data = await limit(perPage).offset((page - 1) * perPage).get();
+
+    return PaginationResult(
+      total: total,
+      perPage: perPage,
+      page: page,
+      lastPage: lastPage,
+      previousPage: page > 1 ? page - 1 : null,
+      nextPage: page < lastPage ? page + 1 : null,
+      nextLink: page < lastPage ? '$basePath?page=${page + 1}' : '',
+      previousLink: page > 1 ? '$basePath?page=${page - 1}' : '',
+      lastLink: '$basePath?page=$lastPage',
+      firstLink: '$basePath?page=1',
+      data: data,
+    ).response();
+  }
+}

lib/src/extensions/simple_paginate_extension.dart

@@ -0,0 +1,18 @@
+import 'package:vania/src/database/simple_pagination.dart';
+import 'package:vania/vania.dart';
+
+extension SimplePagination on QueryBuilder {
+  Future<Map> simplePagination([int perPage = 15, int page = 1]) async {
+    final total = await count();
+    final lastPage = (total / perPage).ceil();
+    final data = await limit(perPage).offset((page - 1) * perPage).get();
+
+    return SimplePaginationResult(
+      next: page < lastPage ? page + 1 : null,
+      previous: page > 1 ? page - 1 : null,
+      last: lastPage,
+      total: total,
+      data: data,
+    ).response();
+  }
+}

lib/vania.dart

@@ -37,6 +37,8 @@ export 'src/database/mysql_driver.dart';
 export 'src/database/postgresql_driver.dart';
 export 'src/database/migration.dart';
 export 'src/enum/column_index.dart';
+export 'src/extensions/pagination_extension.dart';
+export 'src/extensions/simple_paginate_extension.dart';
 export 'package:eloquent/src/query/query_builder.dart';
 
 export 'src/authentication/authentication.dart';