How to update and delete a data in a list according to it's document id - flutter, firebase 2021
449
Solution 1
I don't know how you have saved the data. But I got an issue like this and what I did was, I added a variable as "id" to database while saving the data. There is an auto generated id plugin for flutter (nanoid). You can add that and save the data as following.
var id = nanoid(10) //10 is the length of the id. You can give as you wish
create() async {
try {
FirebaseFirestore.instance
.collection("address")
.doc(id)
.set({
"id":id,
//other inputs
});
} catch (e) {
print(e);
}
}
Then you can use that id as a key to update ad delete.
For example according to you code to delete you can use like this in the onPress(){} of delete button,
FirebaseFirestore.instance.collection("address").doc(x['id']).delete();
So the data related to id will be deleted. Also better to use proper name rather than "x".
Solution 2
Can you please try this
delete(String docId) async {
try {
FirebaseFirestore.instance
.collection("address")
.doc(docId)
.delete();
} catch (e) {
print(e);
}
}
Your delete function call
delete(snapshot.data!.docs[index].id);
Update document
void update(String docId){
FirebaseFirestore.instance.collection("address").doc(docId) .update({"field1":"fieldValue1","field2":"fieldValue2"});
}
Let me know if you find any issues in comment
Author by
Sinduja
Updated on January 01, 2023Comments
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Sinduja over 1 year
I am trying to delete and update a list of details in flutter. For that i used
doc('document_id')which was given as a solution in another stackoverflow question. I tried some another solutions given in stacker flow too. But nothing fork for me. But if I give a specific documentID I am able to delete that. Also how can I pass the selected data to update page too.class addressProfile extends StatefulWidget { const addressProfile({Key? key}) : super(key: key); @override _addressProfileState createState() => _addressProfileState(); } class _addressProfileState extends State<addressProfile> { var Default = 'unDefault'; delete() async { try { FirebaseFirestore.instance .collection("address") .doc('document_id') .delete(); } catch (e) { print(e); } } @override Widget build(BuildContext context) { return Scaffold( backgroundColor: Colors.grey.shade100, appBar: AppBar( centerTitle: true, backgroundColor: Theme.of(context).scaffoldBackgroundColor, title: Text( 'My Addresses', style: TextStyle(color: Colors.black), ), leading: IconButton( icon: Icon( Icons.arrow_back_ios, color: Colors.black, ), onPressed: () { Navigator.of(context).pushNamed('/profilePage'); }, ), ), body: ListView( padding: EdgeInsets.all(16), children: [ StreamBuilder<QuerySnapshot>( stream: FirebaseFirestore.instance.collection("address").snapshots(), builder: (context, snapshot) { if (snapshot.hasData) { return Expanded( child: SizedBox( height: 700, child: ListView.builder( itemCount: snapshot.data!.docs.length, itemBuilder: (context, index) { QueryDocumentSnapshot x = snapshot.data!.docs[index]; return Container( child: Card( child: Padding( padding: EdgeInsets.all(12), child: Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ Row( children: [ Text(x['firstName']), Text(' '), Text(x['lastName']), ], ), Text(""), Row( children: [ Text(x['primaryPhone']), Text(" / "), Text(x['secondaryPhone']), ], ), Text(''), Row( children: [ Text(x['address1']), Text(', '), Text(x['address2']), Text(', '), Text(x['city']), Text(', '), Text(x['region']), ], ), Divider( color: Colors.black, ), Row( children: [ Container( child: Radio( value: 'default', groupValue: Default, onChanged: (String? val) { setState(() { if (val != null) Default = val; }); }), ), Container( child: Text("Default"), ), Container( padding: EdgeInsets.only(left: 60), child: Align( child: ElevatedButton.icon( onPressed: () { if (snapshot.data!.docs.length > 1) { delete(); Fluttertoast.showToast( msg: "Address deleted successfully", toastLength: Toast.LENGTH_SHORT, gravity: ToastGravity.BOTTOM, textColor: Colors.black, backgroundColor: Colors.green.shade400, ); } else { Fluttertoast.showToast( msg: "Main address cannot be deleted", toastLength: Toast.LENGTH_SHORT, gravity: ToastGravity.BOTTOM, textColor: Colors.black, backgroundColor: Colors.green.shade400, ); } }, label: Text('Delete'), style: ElevatedButton.styleFrom( fixedSize: Size(90, 20), primary: Colors.red.shade500, padding: EdgeInsets.symmetric( horizontal: 5, ), shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular( 10))), icon: Icon( Icons.delete_outline_sharp), ), ), ), Container( padding: EdgeInsets.only(left: 14), child: Align( child: ElevatedButton.icon( onPressed: () { Navigator.push( context, MaterialPageRoute( builder: (builder) => updateAddress(), ), ); }, label: Text('Update'), style: ElevatedButton.styleFrom( fixedSize: Size(90, 20), primary: Colors.green.shade500, padding: EdgeInsets.symmetric( horizontal: 5, ), shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular( 10))), icon: Icon(Icons.edit), ), ), ), ], ), ], ), ), ), ); }, ), ), ); } else { return Center( child: CircularProgressIndicator(), ); } }), Align( alignment: AlignmentDirectional.bottomCenter, child: ElevatedButton( onPressed: () { Navigator.of(context).pushNamed('/addNewAddress'); }, child: Text( "Add New Address", style: TextStyle( fontSize: 15, letterSpacing: 2, color: Colors.black, ), ), style: ElevatedButton.styleFrom( fixedSize: Size(250, 40), primary: Colors.green.shade500, padding: EdgeInsets.symmetric( horizontal: 50, ), shape: RoundedRectangleBorder( borderRadius: BorderRadius.circular(10))), ), ), ], ), ); } }This is so far I did. Please help me to continue.
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Frank van Puffelen over 2 yearsThe Firebase Realtime Database and Cloud Firestore are two separate databases. Please only mark your question with the relevant tag, not with both.
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Deepika over 2 years@Mofidul Islam 's answer is the better and easiest option. But not deleting my answer because it might help someone else too. -
Sinduja over 2 yearsThankyou so much. This is the the easiest solution I found. Can I also know how I can pass the data for updating. Like when I select the update button for a data in the list, how can I pass the relevant data to update form. Can I do it in the on press of update?
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Mofidul Islam over 2 yearsYou can update as well like this FirebaseFirestore.instance .collection("address") .doc(docId) .update({"field1":"fieldValue1","field2":"fieldValue2"});
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Sinduja over 2 yearsFirst I want to pass the value for view page to update page. When I select the OnPress() of update button in this page, it need to navigate to Update page. They I need to show the relevant fields of this id in text field. There I need to be able to update
