RealmSwift也需要Realm
我正在将一个项目迁移到Swift 3,在RealmSwift(2.6.1)和Genome(3.2.0)方面遇到了一些问题。我在Xcode中得到了关于Realm的错误,它说我需要这些初始化:RealmSwift也需要Realm,swift,realm,genome,Swift,Realm,Genome,我正在将一个项目迁移到Swift 3,在RealmSwift(2.6.1)和Genome(3.2.0)方面遇到了一些问题。我在Xcode中得到了关于Realm的错误,它说我需要这些初始化: required convenience init(realm: RLMRealm, schema: RLMObjectSchema) { self.init(realm: realm, schema: schema) } required convenience init(value: Any,
required convenience init(realm: RLMRealm, schema: RLMObjectSchema) {
self.init(realm: realm, schema: schema)
}
required convenience init(value: Any, schema: RLMSchema) {
self.init(value: value, schema: schema)
}
然而,这需要在RealmSwift之外导入Realm,当我的类初始化时,它试图使用RLMRealm而不是Realm。警告说“必需的”初始值设定项“init(realm:schema:)”必须由“Object”的子类提供,但是必需的init使用RLMRealm而不是realm。有什么建议吗 我也在使用基因组,这需要初始化,这就是为什么Realm首先要求初始化者的原因:
required convenience init(node: Node, in context: Context) throws {
self.init()
}
所以init看起来是这样的:
class BaseModel : RealmSwift.Object, MappableBase, Identifiable {
required init() {
super.init()
}
required convenience init(node: Node, in context: Context) throws {
self.init()
}
required convenience init(realm: RLMRealm, schema: RLMObjectSchema) {
self.init(realm: realm, schema: schema)
}
required convenience init(value: Any, schema: RLMSchema) {
self.init(value: value, schema: schema)
}
在Swift 2.3中(使用相应的Swift 2.3版本的Realm和Genome),没有任何初始值设定项,一切都正常工作,但现在它不工作了
整个模型:
import RealmSwift
import Genome
import Realm
protocol Identifiable {
var identifier: String { get set }
}
class BaseModel : RealmSwift.Object, MappableBase, Identifiable {
required init() {
super.init()
}
required convenience init(node: Node, in context: Context) throws {
try self.init(node: node, in: context)
}
required convenience init(realm: RLMRealm, schema: RLMObjectSchema) {
self.init(realm: realm, schema: schema)
}
required convenience init(value: Any, schema: RLMSchema) {
self.init(value: value, schema: schema)
}
dynamic var identifier = ""
dynamic var updatedAt: Date?
override static func primaryKey() -> String {
return "identifier"
}
static func newInstance(_ node: Node, context: Context = EmptyNode) throws -> Self {
let map = Map(node: node, in: context)
let new = self.init()
try new.sequence(map)
return new
}
func sequence(_ map: Map) throws {
switch map.type {
case .fromNode:
if self.identifier.isEmpty {
// only map id if there isn't one, otherwise Realm complains about modified primaryKey
try self.identifier <~ map["id"]
}
updatedAt = Date()
case .toNode:
if !self.identifier.isEmpty {
try self.identifier ~> map["id"]
}
}
}
func objectRepresentation() -> [String : AnyObject] {
if let result = try? self.toObject() {
return result as? [String : AnyObject] ?? [:]
} else {
return [:]
}
}
static func objectInRealm(_ realm: Realm, identifier: String?) -> Self? {
if let identifier = identifier {
return realm.object(ofType: self, forPrimaryKey: identifier)
} else {
return nil
}
}
static func createOrFindObject(inRealm realm: Realm, identifier: String) -> Self {
if let foundObject = realm.object(ofType: self, forPrimaryKey: identifier) {
return foundObject
} else {
return realm.create(self, value: ["identifier" : identifier], update: false)
}
}
}
导入RealmSwift
导入基因组
进口领域
协议可识别{
变量标识符:字符串{get set}
}
类BaseModel:RealmSwift.Object,MappableBase,可识别{
必需的init(){
super.init()
}
必需的便利初始化(节点:节点,在上下文:上下文中)抛出{
尝试self.init(节点:节点,在:上下文中)
}
必需的便利初始化(领域:RLMRealm,架构:RLMObjectSchema){
init(领域:领域,模式:模式)
}
必需的便利初始化(值:Any,模式:RLMSchema){
init(值:value,模式:schema)
}
动态变量标识符=“”
动态变量更新日期:日期?
重写静态func primaryKey()->String{
返回“标识符”
}
静态func newInstance(uNode:node,context:context=EmptyNode)抛出->Self{
让map=map(节点:节点,在:上下文中)
让new=self.init()
尝试新建。序列(映射)
还新
}
func序列(u-map:map)抛出{
开关映射类型{
case.fromNode:
如果self.identifier.isEmpty{
//若并没有映射id,则仅映射id,否则域会抱怨修改了primaryKey
尝试self.identifier映射[“id”]
}
}
}
func objectRepresentation()->[字符串:AnyObject]{
如果let result=try?self.toObject(){
返回结果为?[String:AnyObject]??[:]
}否则{
返回[:]
}
}
静态func objectInRealm(urealm:realm,标识符:String?)->Self{
如果let identifier=identifier{
返回realm.object(类型:self,forPrimaryKey:identifier)
}否则{
归零
}
}
静态func createOrFindObject(在realm领域:领域,标识符:字符串)->Self{
如果让foundObject=realm.object(of type:self,forPrimaryKey:identifier){
返回foundObject
}否则{
返回realm.create(self,值:[“identifier”:identifier],更新:false)
}
}
}
您不需要重写init(领域:schema:)
和init(领域:schema:)
,只需定义便利性所需的init(节点:in:)抛出,如下所示
class BaseModel : RealmSwift.Object, MappableBase, Identifiable {
convenience required init(node: Node, in context: Context) throws {
try self.init(node: node, in: context)
}
...
}
您是否在类中声明了任何非可选的、未初始化的属性?没有,我已经检查过了,但考虑得很好。通常,只有当类中的某些内容需要初始化时,才需要重写必需的初始值设定项,如属性。警告显示“必需的”初始值设定项“init(领域:架构:)'必须由'Object'的子类提供,但所需的init使用的是RLMRealm,而不是Realm@WillowPuge您或Realm的其他人对此有什么见解吗?