领域列表不保存数据

Question

我正在从 FireBase 获取数据并将其保存在我的领域中，但它没有按预期工作：

for doc in docs {
    let shopData = doc.data()
    let newShop = RLMShop()
    newShop.shopName = shopData["name"] as? String ?? "Empty Name"
    self.saveShop(shop: newShop) // My issue is here 
}

我的存档功能：

    func saveShop(shop: RLMShop) {
       do {
          try realm.write {
            realm.add(shop)
          }
       } catch {
        print("Error saving shop \(error)")
    }
}

调用保存函数并没有保存我的对象。

Answer 1

您遇到的问题是您正在创建一个RLMShop 对象，但它没有链接到RLMShopsCategory 对象，因此您的shopsList 将不包含新对象。

// Fetch the RLMShopsCategory that you wish to add the RLMShop too
// Using Primary Key here just as an example
let shopsCategory = realm.object(ofType: RLMShopsCategory.self, forPrimaryKey: "YourKey")

for doc in docs {
    let shopData = doc.data()
    let newShop = RLMShop()
    newShop.shopName = // setting the properties etc

    // This is the part you are missing
    // You need to append the newShop to your shopsCategory object
    try! realm.write {
       shopsCategory.shopsList.append(newShop)
    }
}