Flutter, How to search instantly in sqflite database? - flutter

Question

When I search for any poet it always gives me the first records. it does not show the exact record that I am searching for.
My TasksPage:
TextEditingController _searchInputController = TextEditingController();
var list = [];
var filteredList = [];
bool doItJustOnce = false;
void _filterList(value) {
setState(() {
filteredList = list
.where((text) => text.name.toLowerCase().contains(value.toLowerCase())).toList();
});}
The TextField through which I search the desired record
TextField(
onChanged: (value) {
setState(() {
// _filterList(value);
});
},
),
The FutureBuilder
FutureBuilder<List<Poets>>(
//we call the method, which is in the folder db file database.dart
future: DatabaseHelper.instance.getPoets(),
builder: (BuildContext context, AsyncSnapshot<List<Poets>> snapshot) {
if (snapshot.hasData) {
if (!doItJustOnce) {
//You should define a bool like (bool doItJustOnce = false;) on your state.
list = snapshot.data!;
filteredList = list;
doItJustOnce = !doItJustOnce; //this line helps to do just once.
}
return ListView.builder(
padding: EdgeInsets.symmetric(horizontal: 0, vertical: 7),
physics: BouncingScrollPhysics(),
reverse: false,
//Count all records
itemCount: snapshot.data!.length,
// itemCount: filteredList.length, // snapshot.data!.length, //filterLis.length,
//all the records that are in the Student table are passed to an item Poet item = snapshot.data [index];
itemBuilder: (BuildContext context, int index) {
Poets item = snapshot.data![index];
//delete one register for id
return Dismissible(
key: UniqueKey(),
background: Container(
color: Colors.red,
child: Padding(
padding: const EdgeInsets.fromLTRB(338, 30, 0, 0),
child: Text(
'Delete',
style: TextStyle(
color: Colors.white,
fontSize: 20,
fontWeight: FontWeight.bold),
),
),
),
onDismissed: (direction) {
setState(() {
DatabaseHelper.instance.remove(item.id);
});
},
//Now we paint the list with all the records, which will have a number, name, phone
child: Card(
elevation: 15.0,
color: Colors.white12,
child: Container(
decoration: BoxDecoration(
// color: Color.fromRGBO(64, 75, 96, .9,),
color: Colors.white70,
borderRadius: BorderRadius.only(
topLeft: Radius.circular(20.0),
topRight: Radius.circular(20.0),
bottomLeft: Radius.circular(20.0),
bottomRight: Radius.circular(20.0),
),
),
child: ListTile(
leading: CircleAvatar(
child: Text(item.id.toString()),
backgroundColor: Color.fromRGBO(
64,
75,
96,
.9,
),
foregroundColor: Colors.white,
),
title: Text(
item.name,
style: TextStyle(fontWeight: FontWeight.bold),
),
subtitle: Text(item.f_name),
trailing: Text(item.serial_no.toString()),
//If we press one of the cards, it takes us to the page to edit, with the data onTap:
//This method is in the file add_editclient.dart
onTap: () {
Navigator.of(context).push(MaterialPageRoute(
builder: (context) => AddEditClient(
true,
//Here is the record that we want to edit
poet: item,
)));
},
// onLongPress: () {
// setState(() {
// DatabaseHelper.instance.remove(item.id);
// });
// },
),
),
),
);
},
);
} else {
return Center(child: CircularProgressIndicator());
}
},
),
My Question is How to search in sqflite database,please help me.

Answer 1

you can use this sqflite package that will make your task very easy on the query side. you can find an example on its repository(GitHub).
or you can try this,
Future getSearch async(){try {
var mapList = await DbHelper.getTaskDetail(
table: 'CustomerDetails', where: 'name= joe');
if (mapList != null && mapList.isNotEmpty) {
yourlist.clear()
yourlist
.addAll(mapList.map((e) => yourmodel.fromJson(e)).toList());
}
}catch(Exception e){
}}
static Future<List<Map<String, dynamic>>?> getTaskDetail(
{required String table,
String? query,
String? orderBy,
String? where,
int? limit}) async {
final db = await instance.taskDatabase;
return db?.query(table, orderBy: orderBy, limit: limit, where: where);}
put your result in setState().