Avance practica 6 Listado de categorias

lib/model/category_model.dart

+// lib/src/models/category_model.dart
+
+class CategoryModel {
+  int id;
+  int? version;
+  String? key;
+  String? name;
+  int? createdDate;
+  CategoryModel? parentCategory;
+  List<CategoryModel>? subCategories;
+  bool? active;
+
+  CategoryModel({
+    required this.id,
+    this.version,
+    this.key,
+    this.name,
+    this.createdDate,
+    this.parentCategory,
+    this.subCategories,
+    this.active,
+  });
+
+  // Método para crear una instancia de CategoryModel desde un JSON
+  factory CategoryModel.fromJson(Map<String, dynamic> json) {
+    return CategoryModel(
+      id: json['id'],
+      version: json['version'],
+      key: json['clave'],
+      name: json['nombre'],
+      createdDate: json['fechaCreado'],
+      parentCategory: json['categoria'] != null
+          ? CategoryModel.fromJson(json['categoria'])
+          : null,
+      subCategories: json['categorias'] != null
+          ? CategoryModel.fromJsonArray(json['categorias'])
+          : [],
+      active: json['activo'],
+    );
+  }
+
+  // Este metodo sirve para para convertir una instancia de CategoryModel a JSON
+  Map<String, dynamic> toJson() {
+    return {
+      "id": id,
+      "version": version,
+      "clave": key,
+      "nombre": name,
+      "fechaCreado": createdDate,
+      "categoria": parentCategory?.toJson(),
+      "categorias": subCategories != null
+          ? CategoryModel.toJsonArray(subCategories!)
+          : [],
+      "activo": active,
+    };
+  }
+
+  // Método para crear una lista de CategoryModel desde un JSON
+  static List<CategoryModel> fromJsonArray(json) {
+    if (json == null) return [];
+    var list = json as List;
+    List<CategoryModel> listResult =
+    list.map((data) => CategoryModel.fromJson(data)).toList();
+    return listResult;
+  }
+
+  static toJsonArray(List<CategoryModel> list) {
+    List<Map<String, dynamic>> listMap = [];
+    for (CategoryModel item in list) {
+      listMap.add(item.toJson());
+    }
+    return listMap;
+  }
+}

lib/src/http_api/categorias.dart

+import 'dart:async';
+import 'dart:convert';
+import 'package:flutter/cupertino.dart';
+
+class Categorias extends StatelessWidget{
+  @override
+  Widget build(BuildContext context) {
+    // TODO: implement build
+    throw UnimplementedError();
+  }
+}
\ No newline at end of file

pubspec.lock

@@ -66,15 +66,31 @@ packages:
     dependency: "direct dev"
     description:
       name: flutter_lints
-      sha256: "9e8c3858111da373efc5aa341de011d9bd23e2c5c5e0c62bccf32438e192d7b1"
+      sha256: "3f41d009ba7172d5ff9be5f6e6e6abb4300e263aab8866d2a0842ed2a70f8f0c"
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.2"
+    version: "4.0.0"
   flutter_test:
     dependency: "direct dev"
     description: flutter
     source: sdk
     version: "0.0.0"
+  http:
+    dependency: "direct main"
+    description:
+      name: http
+      sha256: b9c29a161230ee03d3ccf545097fccd9b87a5264228c5d348202e0f0c28f9010
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.2.2"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "2aa08ce0341cc9b354a498388e30986515406668dbcc4f7c950c3e715496693b"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.0.2"
   leak_tracker:
     dependency: transitive
     description:
@@ -103,10 +119,10 @@ packages:
     dependency: transitive
     description:
       name: lints
-      sha256: cbf8d4b858bb0134ef3ef87841abdf8d63bfc255c266b7bf6b39daa1085c4290
+      sha256: "976c774dd944a42e83e2467f4cc670daef7eed6295b10b36ae8c85bcbf828235"
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.0"
+    version: "4.0.0"
   matcher:
     dependency: transitive
     description:
@@ -192,6 +208,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.0"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: facc8d6582f16042dd49f2463ff1bd6e2c9ef9f3d5da3d9b087e244a7b564b3c
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.3.2"
   vector_math:
     dependency: transitive
     description:
@@ -208,6 +232,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "14.2.1"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: d43c1d6b787bf0afad444700ae7f4db8827f701bc61c255ac8d328c6f4d52062
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.0.0"
 sdks:
   dart: ">=3.4.4 <4.0.0"
   flutter: ">=3.18.0-18.0.pre.54"

pubspec.yaml

@@ -22,34 +22,18 @@ version: 1.0.0+1
 environment:
   sdk: '>=3.4.4 <4.0.0'
 
-# Dependencies specify other packages that your package needs in order to work.
-# To automatically upgrade your package dependencies to the latest versions
-# consider running `flutter pub upgrade --major-versions`. Alternatively,
-# dependencies can be manually updated by changing the version numbers below to
-# the latest version available on pub.dev. To see which dependencies have newer
-# versions available, run `flutter pub outdated`.
 dependencies:
   flutter:
     sdk: flutter
-  # The following adds the Cupertino Icons font to your application.
-  # Use with the CupertinoIcons class for iOS style icons.
+  http: ^1.2.2
   cupertino_icons: ^1.0.6
 
 dev_dependencies:
   flutter_test:
     sdk: flutter
 
-  # The "flutter_lints" package below contains a set of recommended lints to
-  # encourage good coding practices. The lint set provided by the package is
-  # activated in the `analysis_options.yaml` file located at the root of your
-  # package. See that file for information about deactivating specific lint
-  # rules and activating additional ones.
-  flutter_lints: ^3.0.0
+  flutter_lints: ^4.0.0
 
-# For information on the generic Dart part of this file, see the
-# following page: https://dart.dev/tools/pub/pubspec
-
-# The following section is specific to Flutter packages.
 flutter:
 
   # The following line ensures that the Material Icons font is