Flutter web:从 Firestore 地图检索的值在添加到列表时被截断
Flutter web: Values retrieved from Firestore map are truncated when added to List
在我的 Flutter Web 应用程序中,我正在从 Firestore 中的地图 timeslots
中检索值。
这是数据的样子:
但是,我没有检索整个值列表,而是得到了一个截断的列表,如下所示:
[Mo-Washing-(09:00-10:00, 10:00-11:00, 11:00-12:00, ..., 20:00-21:00, 21:00-22:00)]
下面我包含了负责检索数据并将其添加到列表中的 2 个函数 object
static List object = [];
static Map<String, dynamic> timeDetails = {};
static Map<String, dynamic> userDetails = {};
checkExists(docuID) async {
return await firestore()
.collection('environments')
.doc(docuID)
.get()
.then((val) {
userDetails.addAll(val.data());
}).whenComplete(() async {
fs.DocumentSnapshot snapShot = await firestore()
.collection('environments')
.doc(docuID)
.collection('Washing')
.doc('monday')
.get();
if (snapShot == null || !snapShot.exists) {
print('does not exist');
} else {
await getData(docuID, 'Washing');
}
setState(() {});
});
}
getData(docuID, machineName) async {
return await firestore()
.collection('environments')
.doc(docuID)
.collection(machineName)
.doc('monday')
.get()
.then((val) {
timeDetails.addAll(val.data());
}).whenComplete(() {
object.add('Mo-$machineName-${timeDetails['timeslots'].values}');
print(object);
setState(() {});
});
}
这也发生在 debugPrint
。有谁知道为什么会这样以及我该如何解决?如有任何帮助,我们将不胜感激!
Github 中提到的 workaround 和 debugPrint
都不适合我,但我设法通过将 .toList()
添加到我的 getData 函数来解决这个问题:
getData(docuID, machineName) async {
return await firestore()
.collection('environments')
.doc(docuID)
.collection(machineName)
.doc('monday')
.get()
.then((val) {
timeDetails.addAll(val.data());
}).whenComplete(() {
//toList() is added here to .add
object.add('Mo-$machineName-${timeDetails['timeslots'].values.toList()}');
print(object);
setState(() {});
});
}
输出:
[Mo-Washing-[09:00-10:00, 10:00-11:00, 11:00-12:00, 12:00-13:00, 13:00-14:00, 14:00-15:00, 15:00-16:00, 16:00-17:00, 17:00-18:00, 18:00-19:00, 19:00-20:00, 20:00-21:00, 21:00-22:00]
在我的 Flutter Web 应用程序中,我正在从 Firestore 中的地图 timeslots
中检索值。
这是数据的样子:
但是,我没有检索整个值列表,而是得到了一个截断的列表,如下所示:
[Mo-Washing-(09:00-10:00, 10:00-11:00, 11:00-12:00, ..., 20:00-21:00, 21:00-22:00)]
下面我包含了负责检索数据并将其添加到列表中的 2 个函数 object
static List object = [];
static Map<String, dynamic> timeDetails = {};
static Map<String, dynamic> userDetails = {};
checkExists(docuID) async {
return await firestore()
.collection('environments')
.doc(docuID)
.get()
.then((val) {
userDetails.addAll(val.data());
}).whenComplete(() async {
fs.DocumentSnapshot snapShot = await firestore()
.collection('environments')
.doc(docuID)
.collection('Washing')
.doc('monday')
.get();
if (snapShot == null || !snapShot.exists) {
print('does not exist');
} else {
await getData(docuID, 'Washing');
}
setState(() {});
});
}
getData(docuID, machineName) async {
return await firestore()
.collection('environments')
.doc(docuID)
.collection(machineName)
.doc('monday')
.get()
.then((val) {
timeDetails.addAll(val.data());
}).whenComplete(() {
object.add('Mo-$machineName-${timeDetails['timeslots'].values}');
print(object);
setState(() {});
});
}
这也发生在 debugPrint
。有谁知道为什么会这样以及我该如何解决?如有任何帮助,我们将不胜感激!
Github 中提到的 workaround 和 debugPrint
都不适合我,但我设法通过将 .toList()
添加到我的 getData 函数来解决这个问题:
getData(docuID, machineName) async {
return await firestore()
.collection('environments')
.doc(docuID)
.collection(machineName)
.doc('monday')
.get()
.then((val) {
timeDetails.addAll(val.data());
}).whenComplete(() {
//toList() is added here to .add
object.add('Mo-$machineName-${timeDetails['timeslots'].values.toList()}');
print(object);
setState(() {});
});
}
输出:
[Mo-Washing-[09:00-10:00, 10:00-11:00, 11:00-12:00, 12:00-13:00, 13:00-14:00, 14:00-15:00, 15:00-16:00, 16:00-17:00, 17:00-18:00, 18:00-19:00, 19:00-20:00, 20:00-21:00, 21:00-22:00]