我是新手。 如何从Firestore检索数据并与集合中的每个孩子一起形成新的个人资料?第二个问题是如何在另一个Dart文件中使用此列表?谢谢 谢谢。
final List<Profile> demoProfiles = [
Profile (
photos: [
"https://",
],
name: "abc",
),
Profile (
photos: [
"https://",
],
name: "abc",
)
];
答案 0 :(得分:1)
假设您有一个这样的消防站结构:
Profile
photos: []
name: ""
age: ""
distance: ""
education: ""
您可以使用以下代码段获取数据并将其构建到对象中:
fetchData() async{
final db = await Firestore.instance;
List<Profile> demoProfiles = []
db.collection("Profile").get().then(function(snapshot){
snapshot.forEach((document) {
demoProfiles.add(Profile(
photos: document.data.photos,
name: document.data.name,
age: document.data.age,
distance: document.data.distance,
education: document.data.education
))
})
})
}
编辑:
1)从个人档案类中删除个人档案的模型列表,该列表不应存在
2)将mainController编辑为以下内容:
class _MainControllerState extends State<MainController> {
List<Profile> demoProfiles = [];
demoProfiles = fetchData();
Final MatchEngine match Engine = MatchEngine (
matches:demoProfiles.map((Profile profile) => Match(profile: profile)).toList();
);
fetchData() async{
final db = await Firestore.instance;
List<Profile> list = [];
db.collection("Profile").get().then(function(snapshot){
snapshot.forEach((document) {
list.add(Profile(
photos: document.data.photos,
name: document.data.name,
age: document.data.age,
distance: document.data.distance,
education: document.data.education
))
})
});
return list;
}
}