使用嵌套贴图检索数据并将其保存到Firebase-Flatter
我有三个模型,用于检索数据并将数据写入我的云Firestore使用嵌套贴图检索数据并将其保存到Firebase-Flatter,firebase,flutter,google-cloud-firestore,flutter-dependencies,Firebase,Flutter,Google Cloud Firestore,Flutter Dependencies,我有三个模型,用于检索数据并将数据写入我的云Firestore //Sales model class Sales { String id; String userId; SalesDetails salesDetails; Timestamp createdAt; Timestamp updatedAt; Sales(); Sales.fromMap(Map<String, dynamic> data) { id = data['id'];
//Sales model
class Sales {
String id;
String userId;
SalesDetails salesDetails;
Timestamp createdAt;
Timestamp updatedAt;
Sales();
Sales.fromMap(Map<String, dynamic> data) {
id = data['id'];
userId = data['user_id'];
salesDetails = SalesDetails.fromMap(data['sales_details']);
createdAt = data['created_at'];
updatedAt = data['updated_at'];
}
Map<String, dynamic> toMap() {
return {
'id': id,
'user_id': userId,
'sales_details': salesDetails,
'created_at': createdAt,
'updated_at': updatedAt,
};
}
}
//销售模式
班级销售{
字符串id;
字符串用户标识;
销售详情销售详情;
时间戳createdAt;
时间戳更新数据;
销售();
Sales.fromMap(地图数据){
id=数据['id'];
userId=data['user_id'];
salesDetails=salesDetails.fromMap(数据['sales_details']);
createdAt=data['created_at'];
updatedAt=数据['updated_at'];
}
映射toMap(){
返回{
“id”:id,
“用户id”:用户id,
“销售详细信息”:销售详细信息,
“created_at”:createdAt,
'updated_at':updatedAt,
};
}
}
//SalesDetails模型
class SalesDetails {
String id;
PurchasedItems purchaseItems;
String bankTransferSenderName;
String chequeInfo;
String creditPayLaterInfo;
String customerId;
String customerFirstName;
String customerLastName;
double subTotalAmount;
double totalAmount;
double taxesDue;
bool isComplete;
Timestamp createdAt;
Timestamp updatedAt;
SalesDetails();
SalesDetails.fromMap(Map<String, dynamic> data) {
id = data['id'];
purchaseItems = PurchasedItems.fromMap(data['purchased_items']);
bankTransferSenderName = data['bank_transfer_sender_name'];
chequeInfo = data['cheque_info'];
creditPayLaterInfo = data['credit_pay_later_info'];
customerId = data['customer_id'];
customerFirstName = data['customer_first_name'];
customerLastName = data['customer_last_name'];
subTotalAmount = data['sub_total_amount'];
totalAmount = data['total_amount'];
taxesDue = data['taxes_due'];
isComplete = data['is_complete'];
createdAt = data['created_at'];
updatedAt = data['updated_at'];
}
Map<String, dynamic> toMap() {
return {
'id': id,
'purchased_items': purchaseItems,
'bank_transfer_sender_name': bankTransferSenderName,
'cheque_info': chequeInfo,
'credit_pay_later_info': creditPayLaterInfo,
'customer_id': customerId,
'customer_first_name': customerFirstName,
'customer_last_name': customerLastName,
'sub_total_amount': subTotalAmount,
'total_amount': totalAmount,
'taxes_due': taxesDue,
'is_complete': isComplete,
'created_at': createdAt,
'updated_at': updatedAt,
};
}
}
类销售详情{
字符串id;
PurchasedItems采购项目;
字符串bankTransferSenderName;
字符串支票信息;
字符串creditPayLaterInfo;
字符串customerId;
字符串customerFirstName;
字符串customerLastName;
双倍小计金额;
双倍总额;
双重征税;
布尔完成;
时间戳createdAt;
时间戳更新数据;
销售详情();
SalesDetails.fromMap(地图数据){
id=数据['id'];
purchaseItems=PurchasedItems.fromMap(数据['PurchasedItems']);
bankTransferSenderName=数据['bank_transfer_sender_name'];
chequeInfo=数据['check_info'];
creditPayLaterInfo=数据['credit_pay_later_info'];
customerId=数据['customer_id'];
customerFirstName=数据['customer_first_name'];
customerLastName=数据['customer_last_name'];
小计金额=数据[“小计总额”];
totalAmount=数据[“总金额];
taxesDue=数据[‘到期税款’];
isComplete=数据['is_complete'];
createdAt=data['created_at'];
updatedAt=数据['updated_at'];
}
映射toMap(){
返回{
“id”:id,
“已购买物品”:已购买物品,
“银行转账发送方名称”:银行转账发送方名称,
“支票信息”:支票信息,
“信用支付日后信息”:信用支付日后信息,
“客户id”:客户id,
“customer\u first\u name”:customer firstname,
“客户姓氏”:客户姓氏,
“小计总额”:小计金额,
“总金额”:总金额,
“应交税费”:应交税费,
'is_complete':isComplete,
“created_at”:createdAt,
'updated_at':updatedAt,
};
}
}
//采购模式
class PurchasedItems {
String itemId;
String itemName;
String itemDescription;
int itemQuantity;
PurchasedItems();
PurchasedItems.fromMap(Map<String, dynamic> data) {
itemId = data['item_id'];
itemName = data['item_name'];
itemDescription = data['item_description'];
itemQuantity = data['itemQuantity'];
}
Map<String, dynamic> toMap() {
return {
'id': itemId,
'user_id': itemName,
'item_quantity': itemQuantity,
'item_description': itemDescription,
};
}
}
类PurchasedItems{
字符串itemId;
字符串itemName;
字符串项描述;
整数项数量;
PurchasedItems();
PurchasedItems.fromMap(地图数据){
itemId=数据['item_id'];
itemName=数据['item_name'];
itemDescription=数据['item_description'];
itemQuantity=数据['itemQuantity'];
}
映射toMap(){
返回{
“id”:itemId,
“用户id”:itemName,
“项目数量”:项目数量,
“项目描述”:项目描述,
};
}
}
在观看了Firestore在地图、阵列和集合/文档上的官方视频后,我决定,由于我在应用程序上显示信息的方式,子集合/文档可能是最适合我的
谢谢我真的很感激。