Core data 如何使用核心数据添加到。。。自动生成的函数
当我从顶部菜单的编辑器中选择“创建NSManagedObject子类”时,会自动生成代码 我想尝试使用两个函数,但似乎无法访问它们。第一个是Core data 如何使用核心数据添加到。。。自动生成的函数,core-data,swift3,func,nsset,xcode8.2,Core Data,Swift3,Func,Nsset,Xcode8.2,当我从顶部菜单的编辑器中选择“创建NSManagedObject子类”时,会自动生成代码 我想尝试使用两个函数,但似乎无法访问它们。第一个是addToListsRel,另一个是removeFromListsRel 使用点符号,它们似乎不可用,那么我如何使用它们呢 import Foundation import CoreData extension Ent_Catalog { @nonobjc public class func fetchRequest() -> NSFet
addToListsRel
,另一个是removeFromListsRel
使用点符号,它们似乎不可用,那么我如何使用它们呢
import Foundation
import CoreData
extension Ent_Catalog {
@nonobjc public class func fetchRequest() -> NSFetchRequest<Ent_Catalog> {
return NSFetchRequest<Ent_Catalog>(entityName: "Ent_Catalog");
}
@NSManaged public var brand: String?
@NSManaged public var id: Int32
@NSManaged public var image: NSData?
@NSManaged public var name: String?
@NSManaged public var price: NSDecimalNumber?
@NSManaged public var qty: NSDecimalNumber?
@NSManaged public var size: String?
@NSManaged public var itemsRel: Ent_Items?
@NSManaged public var listsRel: NSSet?
@NSManaged public var ingredientsRel: NSSet?
@NSManaged public var sectionsRel: Ent_Sections?
}
// MARK: Generated accessors for listsRel
extension Ent_Catalog {
@objc(addListsRelObject:)
@NSManaged public func addToListsRel(_ value: Ent_Lists)
@objc(removeListsRelObject:)
@NSManaged public func removeFromListsRel(_ value: Ent_Lists)
@objc(addListsRel:)
@NSManaged public func addToListsRel(_ values: NSSet)
@objc(removeListsRel:)
@NSManaged public func removeFromListsRel(_ values: NSSet)
}
// MARK: Generated accessors for ingredientsRel
extension Ent_Catalog {
@objc(addIngredientsRelObject:)
@NSManaged public func addToIngredientsRel(_ value: Ent_Ingredients)
@objc(removeIngredientsRelObject:)
@NSManaged public func removeFromIngredientsRel(_ value: Ent_Ingredients)
@objc(addIngredientsRel:)
@NSManaged public func addToIngredientsRel(_ values: NSSet)
@objc(removeIngredientsRel:)
@NSManaged public func removeFromIngredientsRel(_ values: NSSet)
}
<代码>导入基础
导入CoreData
扩展ENTU目录{
@nonobjc公共类func fetchRequest()->NSFetchRequest{
返回NSFetchRequest(entityName:“Ent_目录”);
}
@NSV管理的公共var品牌:字符串?
@NSManaged公共变量id:Int32
@NSV管理的公共var映像:NSData?
@NSManaged公共变量名称:字符串?
@NSM管理的公共var价格:NSDecimalNumber?
@NSManaged public var数量:NSDecimalNumber?
@NSManaged公共变量大小:字符串?
@NSManaged公共var项目REL:Ent\U项目?
@NSManaged public var listsRel:NSSet?
@NSManaged public var ingredientsRel:NSSet?
@NSL管理的公共var部分REL:Ent_部分?
}
//标记:为listsRel生成的访问器
扩展ENTU目录{
@objc(addListsRelObject:)
@NSManaged public func addToListsRel(u值:Ent_列表)
@objc(移除列表对象:)
@NSManaged public func removeFromListsRel(u值:Ent_列表)
@objc(addListsRel:)
@NSManaged public func addToListsRel(u值:NSSet)
@objc(移除列表:)
@NSManaged public func removeFromListsRel(u值:NSSet)
}
//标记:为IngCreditsRel生成的访问器
扩展ENTU目录{
@objc(添加请求对象:)
@NSManaged public func AddToingCreditsRel(u值:Ent)
@objc(删除请求对象:)
@NSManaged public func RemoveFromingCreditsReel(\uu值:Ent\u成分)
@objc(添加的资源库:)
@NSManaged public func addToIngredientsRel(uu值:NSSet)
@objc(removeIngredientsRel:)
@NSManaged public func RemoveFromingCreditsRel(u值:NSSet)
}
我认为点符号看起来像
Catalog.listsRel.addToListsRel
。事实证明它实际上是Catalog.addToListsRel
希望这对其他人有帮助