_TypeError（类型 'List<SupportTicket>' 不是类型 'List<SupportTicket>' 的子类型
_TypeError (type 'List<SupportTicket>' is not a subtype of type 'List<SupportTicket>'
_TypeError（类型 'List' 不是类型 'List' 的子类型，其中
SupportTicket 来自包：shopping_app_ui/OdooApiCall_DataMapping//SupportTicket.dart
SupportTicket 来自包：shopping_app_ui/OdooApiCall_DataMapping/SupportTicket.dart )
大家好，如果你们确实需要我遗漏的额外信息，请告诉我。
目前，我与未来的建设者有这个问题，
我正在尝试在脚手架中调用未来构建器的未来功能。然后我将使用列表视图生成器。
但是我有一个我无法解决的问题，根据错误，它似乎表明我重复了一些东西？
这是我的 SupportTicket class 代码，其中涉及 json 反序列化。
class SupportTicket {
final String ticket_number;
final String ticket_id;
final String assigned_user;
final String check_in;
final String check_out;
final String check_in_address;
final String check_out_address;
final String subject;
final String created_date;
final String rating;
final String customer_name;
final String equipment_location;
const SupportTicket({
required this.ticket_number,required this.ticket_id,required this.assigned_user,
required this.check_in,required this.check_out,required this.check_in_address, required this.check_out_address,
required this.subject, required this.created_date, required this.rating, required this.customer_name,
required this.equipment_location,
});
static SupportTicket fromJson(Map<String, dynamic> json) => SupportTicket(
// if it returns false, because idontknow, odoo return false for null in JSON,
//then set it as ' ', otherwise, set it as its normal value, which is usually String
ticket_number : json['ticket_number'] == false ? json['ticket_number'] = '' : json['ticket_number'].toString(),
ticket_id : json['id'].toString(),
assigned_user: json['user_id'] == false ? json['user_id'] = '' : json['user_id'][1].toString(),
check_in: json['check_in'].toString(),
check_out: json['check_out'].toString(),
check_in_address: json['check_in_address'].toString(),
check_out_address: json['check_out_address'].toString(),
created_date: json['created_date'] == false ? json['created_date'] = '' : json['created_date'].toString(),
subject: json['subject'] == false ? json['subject'] = '' : json['subject'].toString(),
rating: json['rating'] == null ? json['rating'] = '0' : json['rating'].toString(),
customer_name: json['customer_name'] == null ? json['customer_name'] = 'Not Defined' : json['customer_name'].toString(),
equipment_location: json['equipment_location'] == null ? json['equipment_location'] = 'Not Defined' : json['equipment_location'].toString(),
);
}
这是我的 API 调用 class，它有未来的静态调用，请注意我在这里使用 odoo RPC，如果有人想知道它是一个 xml-rpc JSON 调用了数据。
import 'package:flutter/widgets.dart';
import 'package:odoo_rpc/odoo_rpc.dart';
import 'package:shopping_app_ui/OdooApiCall_DataMapping/ResPartner.dart';
import '../OdooApiCall_DataMapping//SupportTicket.dart';
import '../screens/authentication/LoginScreen.dart';
//might need to import session id here, to get user id, to get to filter.
class AllTicketsApi {
static Future <List<SupportTicket>> getAllSupportTickets() async{
var fetchTicketData = await globalClient.callKw({ //might need to be changed to widget.client.callkw later because of passing user id session.
'model': 'website.supportzayd.ticket',
'method': 'search_read',
'args': [],
'kwargs': {
'context': {}, //because by default odoo fields.char return False when its null, therefore we change the default return '' rather than false
'domain': [['state.name','!=','Staff Closed']],
'fields':[],
},
});
List listTicket = [];
listTicket = fetchTicketData; //fetchticketdata(var dynamic) is assigned to List,
print ('Get All Support Ticket: '+ fetchTicketData.toString());
return listTicket.map((json) => SupportTicket.fromJson(json)).toList();
//listTicket = fetchTicketData.map((json) => SupportTicket.fromJson(json)).toList(); //convert our json data from odoo to list.
}
static Future<int> countOpenSupportTickets(OdooClient client) async {
var fetchTicketData = await client.callKw({ //might need to be changed to widget.client.callkw later because of passing user id session.
'model': 'website.supportzayd.ticket',
'method': 'search_read',
'args': [],
'kwargs': {
'context': {}, //because by default odoo fields.char return False when its null, therefore we change the default return '' rather than false
'domain': [['state.name','=','Staff Closed']],
'fields': [
'ticket_number',
'state'
],
},
});
List listTicket = [];
listTicket = fetchTicketData; //fetchticketdata(var dynamic) is assigned to List,
//listTicket = fetchTicketData.map((json) => ClosedClosedSupportTicket.fromJson(json)).toList(); //convert our json data from odoo to list.
return listTicket.map((json) => SupportTicket.fromJson(json)).toList().length;
}
static Future <List<ResPartner>> getPartnerImage(String supporticketID) async{
var fetchTicketData = await globalClient.callKw({
'model': 'res.partner',
'method': 'search_read',
'args': [],
'kwargs': {
'context': {'bin_size': true},
'domain': [['id','=',supporticketID as int]],
'fields': ['id', 'name', 'email', '__last_update', 'image_128'],
},
});
List listTicket = [];
listTicket = fetchTicketData; //fetchticketdata(var dynamic) is assigned to List,
print (fetchTicketData.toString());
//listTicket = fetchTicketData.map((json) => SupportTicket.fromJson(json)).toList(); //convert our json data from odoo to list.
return listTicket.map((json) => ResPartner.fromJson(json)).toList();
}
/*
static Future<dynamic> combined() async {
List supportticketID = await getAllSupportTickets();
FutureBuilder(
future: AllTicketsApi.getAllSupportTickets(),
builder: (context, snapshot) {
final tickets = snapshot.data;
snapshot.data.value('ticket_id');
getPartnerImage(snapshot.data.value('ticket_id'));
return
}
);
}
*/
}
下面是我用于 listviewbuilder 的 buildsupporttickets 小部件。
Widget buildSupportTickets(List<SupportTicket> supporttickets) =>
ListView.builder(
physics: BouncingScrollPhysics(),
itemCount: supporttickets.length,
controller: scrollcontroller,
itemBuilder: (context, index){
var supportticket = supporttickets[index];
print('is the problem here before getpartnerimage?');
var respartnerlist = AllTicketsApi.getPartnerImage(supportticket.customer_id); //fetch partner image data based on support ticket ID.
print (respartnerlist.toString());
//create a futurebuilder here for respartner, so we will have kind of a nested future builder. i dont know what makes sense anymore, but let us try.
final avatarUrl ='${globalClient.baseURL}/web/image?model=res.partner&field=image_128&id=${supportticket.customer_id}&unique=${respartnerlist}';
return Padding(
padding: EdgeInsets.symmetric(
horizontal: getProportionateScreenWidth(16),
vertical: getProportionateScreenWidth(4),
),
child: Card(
elevation: 6,
color: isDarkMode(context) ? darkGreyColor : Colors.white,
shadowColor: Colors.grey.withOpacity(0.15),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
),
child: Padding(
padding: EdgeInsets.all(getProportionateScreenWidth(8)),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
/*Image.asset(
'$productImagesPath/${product.productImage}',
height: getProportionateScreenWidth(80),
width: getProportionateScreenWidth(80),
),*/
SizedBox(width: getProportionateScreenWidth(10)),
Row(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.start,
children: [
Container(
width: SizeConfig.screenWidth / 2,
child: Text(
'testingproductname',
overflow: TextOverflow.ellipsis,
maxLines: 1,
style: Theme.of(context).textTheme.subtitle2,
),
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
Text(
/*'$' +
(product.originalPrice -
(product.originalPrice *
product.discountPercent /
100))
.toStringAsFixed(2),
*/
'yo',
style: Theme.of(context).textTheme.subtitle1.copyWith(
fontWeight: Theme.of(context).textTheme.subtitle2.fontWeight),
),
SizedBox(
width: 10,
),
Text(
'$',
style: Theme.of(context)
.textTheme
.caption
.copyWith(
decoration:
TextDecoration.lineThrough,
),
),
SizedBox(
width: 10,
),
Text(
'% off',
style: homeScreensClickableLabelStyle,
),
],
),
],
),
],
)
],
),
InkWell(
child: Container(
padding: EdgeInsets.all(6),
decoration: BoxDecoration(
color: primaryColor.withOpacity(0.1),
borderRadius: BorderRadius.circular(20),
),
child: Icon(
Icons.delete,
size: 22,
color: primaryColor,
),
),
onTap: () {
/*
setState(
() {
myTicketProducts.remove(product);
},
);
*/
},
),
],
),
Divider(),
Align(
alignment: Alignment.centerRight,
child: Padding(
padding: EdgeInsets.symmetric(
vertical: getProportionateScreenWidth(4),
),
child: RichText(
text: TextSpan(
children: [
/*
TextSpan(
text: product.isAddedInCart
? 'Added in cart'
: addToCartLabel,
style: product.isAddedInCart
? Theme.of(context).textTheme.caption
: homeScreensClickableLabelStyle,
recognizer: TapGestureRecognizer()
..onTap = () {
setState(
() {
if (!product.isAddedInCart) {
addProductToCart(product, true);
}
},
);
},
),
*/
],
),
),
),
),
],
),
),
),
//),
);
}
);
恕我直言，如果我需要添加任何其他内容供大家参考，请告诉我。
您在 AllTicketsApi class 中遇到了错误。
更改导入
来自
import '../OdooApiCall_DataMapping//SupportTicket.dart';
要//将双斜杠(//)替换为单斜杠(/)
import '../OdooApiCall_DataMapping/SupportTicket.dart';
_TypeError（类型 'List' 不是类型 'List' 的子类型，其中
SupportTicket 来自包：shopping_app_ui/OdooApiCall_DataMapping//SupportTicket.dart
SupportTicket 来自包：shopping_app_ui/OdooApiCall_DataMapping/SupportTicket.dart )
大家好，如果你们确实需要我遗漏的额外信息，请告诉我。
目前，我与未来的建设者有这个问题， 我正在尝试在脚手架中调用未来构建器的未来功能。然后我将使用列表视图生成器。
但是我有一个我无法解决的问题，根据错误，它似乎表明我重复了一些东西？
这是我的 SupportTicket class 代码，其中涉及 json 反序列化。
class SupportTicket {
final String ticket_number;
final String ticket_id;
final String assigned_user;
final String check_in;
final String check_out;
final String check_in_address;
final String check_out_address;
final String subject;
final String created_date;
final String rating;
final String customer_name;
final String equipment_location;
const SupportTicket({
required this.ticket_number,required this.ticket_id,required this.assigned_user,
required this.check_in,required this.check_out,required this.check_in_address, required this.check_out_address,
required this.subject, required this.created_date, required this.rating, required this.customer_name,
required this.equipment_location,
});
static SupportTicket fromJson(Map<String, dynamic> json) => SupportTicket(
// if it returns false, because idontknow, odoo return false for null in JSON,
//then set it as ' ', otherwise, set it as its normal value, which is usually String
ticket_number : json['ticket_number'] == false ? json['ticket_number'] = '' : json['ticket_number'].toString(),
ticket_id : json['id'].toString(),
assigned_user: json['user_id'] == false ? json['user_id'] = '' : json['user_id'][1].toString(),
check_in: json['check_in'].toString(),
check_out: json['check_out'].toString(),
check_in_address: json['check_in_address'].toString(),
check_out_address: json['check_out_address'].toString(),
created_date: json['created_date'] == false ? json['created_date'] = '' : json['created_date'].toString(),
subject: json['subject'] == false ? json['subject'] = '' : json['subject'].toString(),
rating: json['rating'] == null ? json['rating'] = '0' : json['rating'].toString(),
customer_name: json['customer_name'] == null ? json['customer_name'] = 'Not Defined' : json['customer_name'].toString(),
equipment_location: json['equipment_location'] == null ? json['equipment_location'] = 'Not Defined' : json['equipment_location'].toString(),
);
}
这是我的 API 调用 class，它有未来的静态调用，请注意我在这里使用 odoo RPC，如果有人想知道它是一个 xml-rpc JSON 调用了数据。
import 'package:flutter/widgets.dart';
import 'package:odoo_rpc/odoo_rpc.dart';
import 'package:shopping_app_ui/OdooApiCall_DataMapping/ResPartner.dart';
import '../OdooApiCall_DataMapping//SupportTicket.dart';
import '../screens/authentication/LoginScreen.dart';
//might need to import session id here, to get user id, to get to filter.
class AllTicketsApi {
static Future <List<SupportTicket>> getAllSupportTickets() async{
var fetchTicketData = await globalClient.callKw({ //might need to be changed to widget.client.callkw later because of passing user id session.
'model': 'website.supportzayd.ticket',
'method': 'search_read',
'args': [],
'kwargs': {
'context': {}, //because by default odoo fields.char return False when its null, therefore we change the default return '' rather than false
'domain': [['state.name','!=','Staff Closed']],
'fields':[],
},
});
List listTicket = [];
listTicket = fetchTicketData; //fetchticketdata(var dynamic) is assigned to List,
print ('Get All Support Ticket: '+ fetchTicketData.toString());
return listTicket.map((json) => SupportTicket.fromJson(json)).toList();
//listTicket = fetchTicketData.map((json) => SupportTicket.fromJson(json)).toList(); //convert our json data from odoo to list.
}
static Future<int> countOpenSupportTickets(OdooClient client) async {
var fetchTicketData = await client.callKw({ //might need to be changed to widget.client.callkw later because of passing user id session.
'model': 'website.supportzayd.ticket',
'method': 'search_read',
'args': [],
'kwargs': {
'context': {}, //because by default odoo fields.char return False when its null, therefore we change the default return '' rather than false
'domain': [['state.name','=','Staff Closed']],
'fields': [
'ticket_number',
'state'
],
},
});
List listTicket = [];
listTicket = fetchTicketData; //fetchticketdata(var dynamic) is assigned to List,
//listTicket = fetchTicketData.map((json) => ClosedClosedSupportTicket.fromJson(json)).toList(); //convert our json data from odoo to list.
return listTicket.map((json) => SupportTicket.fromJson(json)).toList().length;
}
static Future <List<ResPartner>> getPartnerImage(String supporticketID) async{
var fetchTicketData = await globalClient.callKw({
'model': 'res.partner',
'method': 'search_read',
'args': [],
'kwargs': {
'context': {'bin_size': true},
'domain': [['id','=',supporticketID as int]],
'fields': ['id', 'name', 'email', '__last_update', 'image_128'],
},
});
List listTicket = [];
listTicket = fetchTicketData; //fetchticketdata(var dynamic) is assigned to List,
print (fetchTicketData.toString());
//listTicket = fetchTicketData.map((json) => SupportTicket.fromJson(json)).toList(); //convert our json data from odoo to list.
return listTicket.map((json) => ResPartner.fromJson(json)).toList();
}
/*
static Future<dynamic> combined() async {
List supportticketID = await getAllSupportTickets();
FutureBuilder(
future: AllTicketsApi.getAllSupportTickets(),
builder: (context, snapshot) {
final tickets = snapshot.data;
snapshot.data.value('ticket_id');
getPartnerImage(snapshot.data.value('ticket_id'));
return
}
);
}
*/
}
下面是我用于 listviewbuilder 的 buildsupporttickets 小部件。
Widget buildSupportTickets(List<SupportTicket> supporttickets) =>
ListView.builder(
physics: BouncingScrollPhysics(),
itemCount: supporttickets.length,
controller: scrollcontroller,
itemBuilder: (context, index){
var supportticket = supporttickets[index];
print('is the problem here before getpartnerimage?');
var respartnerlist = AllTicketsApi.getPartnerImage(supportticket.customer_id); //fetch partner image data based on support ticket ID.
print (respartnerlist.toString());
//create a futurebuilder here for respartner, so we will have kind of a nested future builder. i dont know what makes sense anymore, but let us try.
final avatarUrl ='${globalClient.baseURL}/web/image?model=res.partner&field=image_128&id=${supportticket.customer_id}&unique=${respartnerlist}';
return Padding(
padding: EdgeInsets.symmetric(
horizontal: getProportionateScreenWidth(16),
vertical: getProportionateScreenWidth(4),
),
child: Card(
elevation: 6,
color: isDarkMode(context) ? darkGreyColor : Colors.white,
shadowColor: Colors.grey.withOpacity(0.15),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
),
child: Padding(
padding: EdgeInsets.all(getProportionateScreenWidth(8)),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
/*Image.asset(
'$productImagesPath/${product.productImage}',
height: getProportionateScreenWidth(80),
width: getProportionateScreenWidth(80),
),*/
SizedBox(width: getProportionateScreenWidth(10)),
Row(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.start,
children: [
Container(
width: SizeConfig.screenWidth / 2,
child: Text(
'testingproductname',
overflow: TextOverflow.ellipsis,
maxLines: 1,
style: Theme.of(context).textTheme.subtitle2,
),
),
Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
Text(
/*'$' +
(product.originalPrice -
(product.originalPrice *
product.discountPercent /
100))
.toStringAsFixed(2),
*/
'yo',
style: Theme.of(context).textTheme.subtitle1.copyWith(
fontWeight: Theme.of(context).textTheme.subtitle2.fontWeight),
),
SizedBox(
width: 10,
),
Text(
'$',
style: Theme.of(context)
.textTheme
.caption
.copyWith(
decoration:
TextDecoration.lineThrough,
),
),
SizedBox(
width: 10,
),
Text(
'% off',
style: homeScreensClickableLabelStyle,
),
],
),
],
),
],
)
],
),
InkWell(
child: Container(
padding: EdgeInsets.all(6),
decoration: BoxDecoration(
color: primaryColor.withOpacity(0.1),
borderRadius: BorderRadius.circular(20),
),
child: Icon(
Icons.delete,
size: 22,
color: primaryColor,
),
),
onTap: () {
/*
setState(
() {
myTicketProducts.remove(product);
},
);
*/
},
),
],
),
Divider(),
Align(
alignment: Alignment.centerRight,
child: Padding(
padding: EdgeInsets.symmetric(
vertical: getProportionateScreenWidth(4),
),
child: RichText(
text: TextSpan(
children: [
/*
TextSpan(
text: product.isAddedInCart
? 'Added in cart'
: addToCartLabel,
style: product.isAddedInCart
? Theme.of(context).textTheme.caption
: homeScreensClickableLabelStyle,
recognizer: TapGestureRecognizer()
..onTap = () {
setState(
() {
if (!product.isAddedInCart) {
addProductToCart(product, true);
}
},
);
},
),
*/
],
),
),
),
),
],
),
),
),
//),
);
}
);
恕我直言，如果我需要添加任何其他内容供大家参考，请告诉我。
您在 AllTicketsApi class 中遇到了错误。
更改导入 来自
import '../OdooApiCall_DataMapping//SupportTicket.dart';
要//将双斜杠(//)替换为单斜杠(/)
import '../OdooApiCall_DataMapping/SupportTicket.dart';