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Vorhandene News & Bürgerforumnews & Mängel können mit einem swipe nach rechts gelöscht werden, es werden nun auch die Bilder aus den jeweilligen Firebase Ordnern gelöscht

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This commit is contained in:
Schummi C
2023-05-04 16:42:47 +02:00
parent fe448299cb
commit b59147e27f
1 changed files with 98 additions and 40 deletions
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lib/UserDefinedList.dart
+98 -40
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@@ -1,5 +1,6 @@
import 'package:cached_network_image/cached_network_image.dart';
import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_storage/firebase_storage.dart';
import 'package:flutter/material.dart';
import 'DetailPage.dart';
import 'package:intl/intl.dart';
@@ -27,13 +28,12 @@ class UserDefinedItem extends StatelessWidget {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) =>
DetailPage(
title: title,
datum: datum,
description: description,
imageUrl: imageUrl,
),
builder: (context) => DetailPage(
title: title,
datum: datum,
description: description,
imageUrl: imageUrl,
),
),
);
},
@@ -54,8 +54,6 @@ class UserDefinedItem extends StatelessWidget {
),
errorWidget: (context, url, error) => Icon(Icons.error),
),
),
Flexible(
flex: 1,
@@ -72,8 +70,7 @@ class UserDefinedItem extends StatelessWidget {
title,
overflow: TextOverflow.ellipsis,
style: const TextStyle(
fontSize: 20,
fontWeight: FontWeight.bold),
fontSize: 20, fontWeight: FontWeight.bold),
),
),
Text(
@@ -110,14 +107,13 @@ class UserDefinedItem extends StatelessWidget {
// Ändern Sie die Verwendung von Image.network in UserDefinedItem-Widgets in Ihren ListView.builder-Aufrufen:
class NewsList extends StatefulWidget {
const NewsList({Key? key}) : super(key: key);
@override
_NewsListState createState() => _NewsListState();
}
class _NewsListState extends State<NewsList> {
final FirebaseFirestore firestore = FirebaseFirestore.instance;
late Stream<QuerySnapshot> newsStream;
@@ -130,7 +126,8 @@ class _NewsListState extends State<NewsList> {
firestore.enablePersistence();
// Enable network
firestore.settings = Settings(cacheSizeBytes: Settings.CACHE_SIZE_UNLIMITED);
firestore.settings =
Settings(cacheSizeBytes: Settings.CACHE_SIZE_UNLIMITED);
// Configure the stream to use the cache first and then the server
newsStream = firestore
@@ -139,8 +136,13 @@ class _NewsListState extends State<NewsList> {
.snapshots(includeMetadataChanges: true);
}
Future<void> _deleteNews(String newsId) async {
Future<void> _deleteNews(String newsId, String? imageUrl) async {
try {
if (imageUrl != null) {
// Löschen Sie das Bild vom Firebase Storage
await FirebaseStorage.instance.refFromURL(imageUrl).delete();
}
// Löschen Sie das Dokument von der Firestore-Kollektion
await firestore.collection('News').doc(newsId).delete();
} catch (e) {
print('Error deleting news: $e');
@@ -164,20 +166,20 @@ class _NewsListState extends State<NewsList> {
itemCount: documents.length,
itemBuilder: (BuildContext context, int index) {
final Map<String, dynamic> data =
documents[index].data()! as Map<String, dynamic>;
documents[index].data()! as Map<String, dynamic>;
final String newsId = documents[index].id;
final DateTime createdDate = data['createdDate'].toDate();
final formattedDate =
DateFormat('dd.MM.yyyy').format(createdDate);
DateFormat('dd.MM.yyyy').format(createdDate);
return Dismissible(
key: UniqueKey(),
direction: DismissDirection.endToStart,
onDismissed: (direction) {
_deleteNews(newsId);
_deleteNews(newsId, data['imageUrl']);
},
background: Container(
color: Colors.red,
child: Align(
child: const Align(
alignment: Alignment.centerRight,
child: Padding(
padding: EdgeInsets.only(right: 16),
@@ -200,13 +202,13 @@ class _NewsListState extends State<NewsList> {
}
}
class IssueList extends StatefulWidget {
const IssueList({Key? key}) : super(key: key);
@override
_IssueListState createState() => _IssueListState();
}
class _IssueListState extends State<IssueList> {
final FirebaseFirestore firestore = FirebaseFirestore.instance;
late Stream<QuerySnapshot> issueStream;
@@ -219,7 +221,8 @@ class _IssueListState extends State<IssueList> {
firestore.enablePersistence();
// Enable network
firestore.settings = Settings(cacheSizeBytes: Settings.CACHE_SIZE_UNLIMITED);
firestore.settings =
Settings(cacheSizeBytes: Settings.CACHE_SIZE_UNLIMITED);
// Configure the stream to use the cache first and then the server
issueStream = firestore
@@ -228,6 +231,16 @@ class _IssueListState extends State<IssueList> {
.snapshots(includeMetadataChanges: true);
}
Future<void> _deleteIssue(String issueId, String imageUrl) async {
try {
final Reference ref = FirebaseStorage.instance.refFromURL(imageUrl);
await ref.delete();
await firestore.collection('Issues').doc(issueId).delete();
} catch (e) {
print('Error deleting issue: $e');
}
}
@override
Widget build(BuildContext context) {
return StreamBuilder<QuerySnapshot>(
@@ -245,16 +258,33 @@ class _IssueListState extends State<IssueList> {
itemCount: documents.length,
itemBuilder: (BuildContext context, int index) {
final Map<String, dynamic> data =
documents[index].data()! as Map<String, dynamic>;
final DateTime createdDate =
data['createdDate'].toDate();
documents[index].data()! as Map<String, dynamic>;
final String issueId = documents[index].id;
final DateTime createdDate = data['createdDate'].toDate();
final formattedDate =
DateFormat('dd.MM.yyyy').format(createdDate);
return UserDefinedItem(
title: data['title'] ?? '',
datum: formattedDate,
description: data['description'] ?? '',
imageUrl: data['imageUrl'] ?? '',
DateFormat('dd.MM.yyyy').format(createdDate);
return Dismissible(
key: UniqueKey(),
direction: DismissDirection.endToStart,
onDismissed: (direction) {
_deleteIssue(issueId, data['imageUrl']);
},
background: Container(
color: Colors.red,
child: const Align(
alignment: Alignment.centerRight,
child: Padding(
padding: EdgeInsets.only(right: 16),
child: Icon(Icons.delete, color: Colors.white),
),
),
),
child: UserDefinedItem(
title: data['title'] ?? '',
datum: formattedDate,
description: data['description'] ?? '',
imageUrl: data['imageUrl'] ?? '',
),
);
},
);
@@ -263,6 +293,7 @@ class _IssueListState extends State<IssueList> {
);
}
}
class CitizensForum extends StatefulWidget {
const CitizensForum({Key? key}) : super(key: key);
@@ -282,7 +313,8 @@ class _CitizensForumState extends State<CitizensForum> {
firestore.enablePersistence();
// Enable network
firestore.settings = Settings(cacheSizeBytes: Settings.CACHE_SIZE_UNLIMITED);
firestore.settings =
Settings(cacheSizeBytes: Settings.CACHE_SIZE_UNLIMITED);
// Configure the stream to use the cache first and then the server
citizenStream = firestore
@@ -291,11 +323,22 @@ class _CitizensForumState extends State<CitizensForum> {
.snapshots(includeMetadataChanges: true);
}
Future<void> deleteDocument(String documentId, String? imageUrl) async {
// Delete document
await firestore.collection('CitizensForum').doc(documentId).delete();
// Delete image file
if (imageUrl != null) {
await FirebaseStorage.instance.refFromURL(imageUrl).delete();
}
}
@override
Widget build(BuildContext context) {
return StreamBuilder<QuerySnapshot<Map<String, dynamic>>>(
stream: citizenStream,
builder: (BuildContext context, AsyncSnapshot<QuerySnapshot<Map<String, dynamic>>> snapshot) {
builder: (BuildContext context,
AsyncSnapshot<QuerySnapshot<Map<String, dynamic>>> snapshot) {
if (snapshot.hasError) {
return Text('Error: ${snapshot.error}');
}
@@ -303,18 +346,33 @@ class _CitizensForumState extends State<CitizensForum> {
case ConnectionState.waiting:
return const Text('Loading...');
default:
final List<QueryDocumentSnapshot<Map<String, dynamic>>> documents = snapshot.data!.docs;
final List<QueryDocumentSnapshot<Map<String, dynamic>>> documents =
snapshot.data!.docs;
return ListView.builder(
itemCount: documents.length,
itemBuilder: (BuildContext context, int index) {
final Map<String, dynamic> data = documents[index].data();
final String documentId = documents[index].id;
final DateTime createdDate = data['createdDate'].toDate();
final formattedDate = DateFormat('dd.MM.yyyy').format(createdDate);
return UserDefinedItem(
title: data['title'] ?? '',
datum: formattedDate,
description: data['description'] ?? '',
imageUrl: data['imageUrl'] ?? '',
final formattedDate =
DateFormat('dd.MM.yyyy').format(createdDate);
return Dismissible(
key: Key(documentId),
direction: DismissDirection.endToStart,
background: Container(
alignment: Alignment.centerRight,
padding: const EdgeInsets.only(right: 16.0),
color: Colors.red,
child: const Icon(Icons.delete, color: Colors.white),
),
onDismissed: (_) =>
deleteDocument(documentId, data['imageUrl']),
child: UserDefinedItem(
title: data['title'] ?? '',
datum: formattedDate,
description: data['description'] ?? '',
imageUrl: data['imageUrl'] ?? '',
),
);
},
);
@@ -322,4 +380,4 @@ class _CitizensForumState extends State<CitizensForum> {
},
);
}
}
}