Iphone 如何在CoreData中保存一对多关系？_Iphone_Ios_Core Data_Sqlite_One To Many

Iphone 如何在CoreData中保存一对多关系？

iphone ios core-data sqlite

Iphone 如何在CoreData中保存一对多关系？,iphone,ios,core-data,sqlite,one-to-many,Iphone,Ios,Core Data,Sqlite,One To Many,我有一张桌子，如下所示 @implementation ClubDetails @dynamic clubarea; @dynamic clubdealhere; @dynamic clubdescription; @dynamic clubdistance; @dynamic clubemail; @dynamic clubfacility; @dynamic clubfav; @dynamic clubid; @dynamic clublat; @dynamic clublogopath;

我有一张桌子，如下所示

@implementation ClubDetails

@dynamic clubarea;
@dynamic clubdealhere;
@dynamic clubdescription;
@dynamic clubdistance;
@dynamic clubemail;
@dynamic clubfacility;
@dynamic clubfav;
@dynamic clubid;
@dynamic clublat;
@dynamic clublogopath;
@dynamic clubname;
@dynamic clubphone;
@dynamic cluburl;
@dynamic clubvenutype;
@dynamic clublong;
@dynamic clubdetailsimages;


    - (void)addClubdetailsimagesObject:(ClubDetailsImages *)value {
        NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
        [[self primitiveValueForKey:@"ClubDetailsImages"] addObject:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    }

    - (void)removeClubdetailsimagesObject:(ClubDetailsImages *)value {
        NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
        [[self primitiveValueForKey:@"ClubDetailsImages"] removeObject:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    }

    - (void)addClubdetailsimages:(NSSet *)value {
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
        [[self primitiveValueForKey:@"ClubDetailsImages"] unionSet:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
    }

    - (void)removeClubdetailsimages:(NSSet *)value {
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
        [[self primitiveValueForKey:@"ClubDetailsImages"] minusSet:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
    }


***ClubDetailsImages.h*** looks like

    @class ClubDetails;

    @interface ClubDetailsImages : NSManagedObject

    @property (nonatomic, retain) NSString * images;
    @property (nonatomic, retain) ClubDetails *clubdetailed;


***ClubDetailsImages.m*** looks like

    @implementation ClubDetailsImages

    @dynamic images;
    @dynamic clubdetailed;



For Saving, I wrote code like this



-(void)saveClubDetails:(NSMutableArray*)allClubs{


    NSError *error;
    NSManagedObjectContext *context = [self managedObjectContext];

    NSFetchRequest * fetchRequest = [[NSFetchRequest alloc] init];

    [fetchRequest setEntity:[NSEntityDescription entityForName:@"ClubDetails" inManagedObjectContext:context]];

    [fetchRequest setIncludesPropertyValues:NO]; //only fetch the managedObjectID

    NSArray *allObject = [context executeFetchRequest:fetchRequest error:&error];

    for (NSManagedObject * obj in allObject) {
        [context deleteObject:obj];
    }
    NSError *saveError = nil;
    [context save:&saveError]; // NO MORE VALUE IS DB



    for (int x = 0; x<[allClubs count]; x++) {

        ClubDetails *club = [NSEntityDescription insertNewObjectForEntityForName:@"ClubDetails"
                                                    inManagedObjectContext:context];


        ClubDetails2 *ob = (ClubDetails2*)[allClubs objectAtIndex:x];

        club.clubarea = [NSString stringWithFormat:@"%@", ob.clubarea];
        club.clubdealhere = [NSString stringWithFormat:@"%@", ob.clubdealhere];
        club.clubdescription = [NSString stringWithFormat:@"%@", ob.clubdescription];
        club.clubdistance = [NSString stringWithFormat:@"%@", ob.clubdistance];
        club.clubemail = [NSString stringWithFormat:@"%@", ob.clubemail];
        club.clubfacility = [NSString stringWithFormat:@"%@", ob.clubfacility];
        club.clubfav = [NSString stringWithFormat:@"%@", ob.clubfav];

        club.clubid = [NSString stringWithFormat:@"%@", ob.clubid];
        club.clublat = [NSString stringWithFormat:@"%@", ob.clublat];
        club.clublogopath = [NSString stringWithFormat:@"%@", ob.clublogopath];
        club.clubname = [NSString stringWithFormat:@"%@", ob.clubname];
        club.clubphone = [NSString stringWithFormat:@"%@", ob.clubphone];
        club.cluburl = [NSString stringWithFormat:@"%@", ob.cluburl];

        club.clubvenutype = [NSString stringWithFormat:@"%@", ob.clubvenutype];
        club.clublong = [NSString stringWithFormat:@"%@", ob.clublong];


        ClubDetailsImages *clubImages = [NSEntityDescription insertNewObjectForEntityForName:@"ClubDetailsImages"
                                                          inManagedObjectContext:context];


        clubImages.images = [NSString stringWithFormat:@"veer url image"];
        [club addClubdetailsimagesObject:clubImages];

    }

    if (![context save:&error]) {
        NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]);
    }


    //  NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"Clubs"
                                              inManagedObjectContext:context];

    [fetchRequest setEntity:entity];

    NSArray *fetchedArray = [context executeFetchRequest:fetchRequest error:&error];

    NSLog(@"COUNT of arary is %d", [fetchedArray count]);


    for (Clubs *info in fetchedArray) {
        NSLog(@" Duaan Name  ~~~~ : %@", info.clubname);
    }


}

我有一个XML，其中提供了俱乐部的详细信息。每个标记都有一个值，但图像标记包含动态图像

在此之后，我的对象如下所示

@implementation ClubDetails

@dynamic clubarea;
@dynamic clubdealhere;
@dynamic clubdescription;
@dynamic clubdistance;
@dynamic clubemail;
@dynamic clubfacility;
@dynamic clubfav;
@dynamic clubid;
@dynamic clublat;
@dynamic clublogopath;
@dynamic clubname;
@dynamic clubphone;
@dynamic cluburl;
@dynamic clubvenutype;
@dynamic clublong;
@dynamic clubdetailsimages;


    - (void)addClubdetailsimagesObject:(ClubDetailsImages *)value {
        NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
        [[self primitiveValueForKey:@"ClubDetailsImages"] addObject:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    }

    - (void)removeClubdetailsimagesObject:(ClubDetailsImages *)value {
        NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
        [[self primitiveValueForKey:@"ClubDetailsImages"] removeObject:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    }

    - (void)addClubdetailsimages:(NSSet *)value {
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
        [[self primitiveValueForKey:@"ClubDetailsImages"] unionSet:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
    }

    - (void)removeClubdetailsimages:(NSSet *)value {
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
        [[self primitiveValueForKey:@"ClubDetailsImages"] minusSet:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
    }


***ClubDetailsImages.h*** looks like

    @class ClubDetails;

    @interface ClubDetailsImages : NSManagedObject

    @property (nonatomic, retain) NSString * images;
    @property (nonatomic, retain) ClubDetails *clubdetailed;


***ClubDetailsImages.m*** looks like

    @implementation ClubDetailsImages

    @dynamic images;
    @dynamic clubdetailed;



For Saving, I wrote code like this



-(void)saveClubDetails:(NSMutableArray*)allClubs{


    NSError *error;
    NSManagedObjectContext *context = [self managedObjectContext];

    NSFetchRequest * fetchRequest = [[NSFetchRequest alloc] init];

    [fetchRequest setEntity:[NSEntityDescription entityForName:@"ClubDetails" inManagedObjectContext:context]];

    [fetchRequest setIncludesPropertyValues:NO]; //only fetch the managedObjectID

    NSArray *allObject = [context executeFetchRequest:fetchRequest error:&error];

    for (NSManagedObject * obj in allObject) {
        [context deleteObject:obj];
    }
    NSError *saveError = nil;
    [context save:&saveError]; // NO MORE VALUE IS DB



    for (int x = 0; x<[allClubs count]; x++) {

        ClubDetails *club = [NSEntityDescription insertNewObjectForEntityForName:@"ClubDetails"
                                                    inManagedObjectContext:context];


        ClubDetails2 *ob = (ClubDetails2*)[allClubs objectAtIndex:x];

        club.clubarea = [NSString stringWithFormat:@"%@", ob.clubarea];
        club.clubdealhere = [NSString stringWithFormat:@"%@", ob.clubdealhere];
        club.clubdescription = [NSString stringWithFormat:@"%@", ob.clubdescription];
        club.clubdistance = [NSString stringWithFormat:@"%@", ob.clubdistance];
        club.clubemail = [NSString stringWithFormat:@"%@", ob.clubemail];
        club.clubfacility = [NSString stringWithFormat:@"%@", ob.clubfacility];
        club.clubfav = [NSString stringWithFormat:@"%@", ob.clubfav];

        club.clubid = [NSString stringWithFormat:@"%@", ob.clubid];
        club.clublat = [NSString stringWithFormat:@"%@", ob.clublat];
        club.clublogopath = [NSString stringWithFormat:@"%@", ob.clublogopath];
        club.clubname = [NSString stringWithFormat:@"%@", ob.clubname];
        club.clubphone = [NSString stringWithFormat:@"%@", ob.clubphone];
        club.cluburl = [NSString stringWithFormat:@"%@", ob.cluburl];

        club.clubvenutype = [NSString stringWithFormat:@"%@", ob.clubvenutype];
        club.clublong = [NSString stringWithFormat:@"%@", ob.clublong];


        ClubDetailsImages *clubImages = [NSEntityDescription insertNewObjectForEntityForName:@"ClubDetailsImages"
                                                          inManagedObjectContext:context];


        clubImages.images = [NSString stringWithFormat:@"veer url image"];
        [club addClubdetailsimagesObject:clubImages];

    }

    if (![context save:&error]) {
        NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]);
    }


    //  NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"Clubs"
                                              inManagedObjectContext:context];

    [fetchRequest setEntity:entity];

    NSArray *fetchedArray = [context executeFetchRequest:fetchRequest error:&error];

    NSLog(@"COUNT of arary is %d", [fetchedArray count]);


    for (Clubs *info in fetchedArray) {
        NSLog(@" Duaan Name  ~~~~ : %@", info.clubname);
    }


}

ClubDetails.h

#导入
#进口
#导入“ClubDetailsImages.h”
@接口ClubDetails:NSManagedObject
@属性（非原子，保留）NSString*clubarea；
@属性（非原子，保留）NSString*clubdealhere；
@属性（非原子，保留）NSString*clubdescription；
@属性（非原子，保留）NSString*clubdistance；
@属性（非原子，保留）NSString*clubemail；
@属性（非原子，保留）NSString*clubfacility；
@属性（非原子，保留）NSString*clubfav；
@属性（非原子，保留）NSString*clubid；
@属性（非原子，保留）NSString*clublat；
@属性（非原子，保留）NSString*clublogopath；
@属性（非原子，保留）NSString*clubname；
@属性（非原子，保留）NSString*clubphone；
@属性（非原子，保留）NSString*cluburl；
@属性（非原子，保留）NSString*clubvenutype；
@属性（非原子，保留）NSString*clublong；
@属性（非原子，保留）NSSet*clubdetailsimages；
@结束
@接口ClubDetails（CoreDataGeneratedAccessor）
-（void）addClubDetailsAgeSObject:（ClubDetailsAges*）值；
-（void）RemoveClubDetailsAgeSObject:（ClubDetailsAges*）值；
-（void）addClubdetailsimages:（NSSet*）值；
-（void）RemoveClubDetailsAges:（NSSet*）值；

其.m文件如下所示

@implementation ClubDetails

@dynamic clubarea;
@dynamic clubdealhere;
@dynamic clubdescription;
@dynamic clubdistance;
@dynamic clubemail;
@dynamic clubfacility;
@dynamic clubfav;
@dynamic clubid;
@dynamic clublat;
@dynamic clublogopath;
@dynamic clubname;
@dynamic clubphone;
@dynamic cluburl;
@dynamic clubvenutype;
@dynamic clublong;
@dynamic clubdetailsimages;


    - (void)addClubdetailsimagesObject:(ClubDetailsImages *)value {
        NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
        [[self primitiveValueForKey:@"ClubDetailsImages"] addObject:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    }

    - (void)removeClubdetailsimagesObject:(ClubDetailsImages *)value {
        NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
        [[self primitiveValueForKey:@"ClubDetailsImages"] removeObject:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    }

    - (void)addClubdetailsimages:(NSSet *)value {
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
        [[self primitiveValueForKey:@"ClubDetailsImages"] unionSet:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
    }

    - (void)removeClubdetailsimages:(NSSet *)value {
        [self willChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
        [[self primitiveValueForKey:@"ClubDetailsImages"] minusSet:value];
        [self didChangeValueForKey:@"ClubDetailsImages" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
    }


***ClubDetailsImages.h*** looks like

    @class ClubDetails;

    @interface ClubDetailsImages : NSManagedObject

    @property (nonatomic, retain) NSString * images;
    @property (nonatomic, retain) ClubDetails *clubdetailed;


***ClubDetailsImages.m*** looks like

    @implementation ClubDetailsImages

    @dynamic images;
    @dynamic clubdetailed;



For Saving, I wrote code like this



-(void)saveClubDetails:(NSMutableArray*)allClubs{


    NSError *error;
    NSManagedObjectContext *context = [self managedObjectContext];

    NSFetchRequest * fetchRequest = [[NSFetchRequest alloc] init];

    [fetchRequest setEntity:[NSEntityDescription entityForName:@"ClubDetails" inManagedObjectContext:context]];

    [fetchRequest setIncludesPropertyValues:NO]; //only fetch the managedObjectID

    NSArray *allObject = [context executeFetchRequest:fetchRequest error:&error];

    for (NSManagedObject * obj in allObject) {
        [context deleteObject:obj];
    }
    NSError *saveError = nil;
    [context save:&saveError]; // NO MORE VALUE IS DB



    for (int x = 0; x<[allClubs count]; x++) {

        ClubDetails *club = [NSEntityDescription insertNewObjectForEntityForName:@"ClubDetails"
                                                    inManagedObjectContext:context];


        ClubDetails2 *ob = (ClubDetails2*)[allClubs objectAtIndex:x];

        club.clubarea = [NSString stringWithFormat:@"%@", ob.clubarea];
        club.clubdealhere = [NSString stringWithFormat:@"%@", ob.clubdealhere];
        club.clubdescription = [NSString stringWithFormat:@"%@", ob.clubdescription];
        club.clubdistance = [NSString stringWithFormat:@"%@", ob.clubdistance];
        club.clubemail = [NSString stringWithFormat:@"%@", ob.clubemail];
        club.clubfacility = [NSString stringWithFormat:@"%@", ob.clubfacility];
        club.clubfav = [NSString stringWithFormat:@"%@", ob.clubfav];

        club.clubid = [NSString stringWithFormat:@"%@", ob.clubid];
        club.clublat = [NSString stringWithFormat:@"%@", ob.clublat];
        club.clublogopath = [NSString stringWithFormat:@"%@", ob.clublogopath];
        club.clubname = [NSString stringWithFormat:@"%@", ob.clubname];
        club.clubphone = [NSString stringWithFormat:@"%@", ob.clubphone];
        club.cluburl = [NSString stringWithFormat:@"%@", ob.cluburl];

        club.clubvenutype = [NSString stringWithFormat:@"%@", ob.clubvenutype];
        club.clublong = [NSString stringWithFormat:@"%@", ob.clublong];


        ClubDetailsImages *clubImages = [NSEntityDescription insertNewObjectForEntityForName:@"ClubDetailsImages"
                                                          inManagedObjectContext:context];


        clubImages.images = [NSString stringWithFormat:@"veer url image"];
        [club addClubdetailsimagesObject:clubImages];

    }

    if (![context save:&error]) {
        NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]);
    }


    //  NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
    NSEntityDescription *entity = [NSEntityDescription entityForName:@"Clubs"
                                              inManagedObjectContext:context];

    [fetchRequest setEntity:entity];

    NSArray *fetchedArray = [context executeFetchRequest:fetchRequest error:&error];

    NSLog(@"COUNT of arary is %d", [fetchedArray count]);


    for (Clubs *info in fetchedArray) {
        NSLog(@" Duaan Name  ~~~~ : %@", info.clubname);
    }


}

@实现ClubDetails
@动态球团；
@动态集群；
@动态聚类描述；
@动态俱乐部距离；
@动态集群邮件；
@动态俱乐部设施；
@动态clubfav；
@动态俱乐部投标；
@动态集群；
@动态Clublogpath；
@动态集群名称；
@动态集群电话；
@动态俱乐部；
@动态clubvenutype；
@动态聚类；
@动态聚类分析；
-（void）addClubDetailsAgeSObject:（ClubDetailsAges*）值{
NSSet*changedObjects=[[NSSet alloc]initWithObjects:&值计数：1]；
[self-willChangeValueForKey:@“ClubDetailsAges”带有设置突变：NSKeyValueUnionSetMutation使用对象：changedObjects]；
[[self-primitiveValueForKey:@“ClubDetailsAges”]addObject:value]；
[self-didChangeValueForKey:@“ClubDetailsAges”带有设置突变：NSKeyValueUnionSetMutation使用对象：changedObjects]；
}
-（void）RemoveClubDetailsAgeSObject:（ClubDetailsAges*）值{
NSSet*changedObjects=[[NSSet alloc]initWithObjects:&值计数：1]；
[self Will ChangeValueForkey:@“ClubDetailsAges”带有设置突变：NSKeyValueMinssSetMutation使用对象：changedObjects]；
[[self-primitiveValueForKey:@“ClubDetailsAges”]removeObject:value]；
[self-didChangeValueForKey:@“ClubDetailsAges”带有设置突变：NSKeyValueMinssSetMutation使用对象：changedObjects]；
}
-（void）addClubDetailsAges:（NSSet*）值{
[self-willChangeValueForKey:@“ClubDetailsAges”带有setMutation:NSKeyValueUnionSetMutation使用对象：值]；
[[self-primitiveValueForKey:@“ClubDetailsAges”]unionSet:value]；
[self-didChangeValueForKey:@“ClubDetailsAges”带有setMutation:NSKeyValueUnionSetMutation UsingObject:value]；
}
-（无效）RemoveClubDetailsAges:（NSSet*）值{
[self-willChangeValueForKey:@“ClubDetailsAges”带有setMutation:nsKeyValueMinssSetMutation使用对象：value]；
[[self-primitiveValueForKey:@“ClubDetailsAges”]最小集：值]；
[self-didChangeValueForKey:@“ClubDetailsAges”带有setObstation:nsKeyValueMinssSetObstation使用对象：value]；
}
***ClubDetailsImages.h***看起来像
@类簇尾；
@接口ClubDetailsImages:NSManagedObject
@属性（非原子，保留）NSString*图像；
@属性（非原子，保留）ClubDetails*clubdetailed；
***ClubDetailsImages.m***看起来像
@实现ClubDetailsImages
@动态图像；
@动态聚类分析；
为了节省时间，我编写了如下代码
-（void）saveClubDetails:（NSMutableArray*）所有俱乐部{
n错误*错误；
NSManagedObjectContext*上下文=[self-managedObjectContext]；
NSFetchRequest*fetchRequest=[[NSFetchRequest alloc]init]；
[fetchRequest setEntity:[NSEntityDescription entityForName:@“ClubDetails”inManagedObjectContext:context]]；
[fetchRequest SetIncludePropertyValue:否]；//仅获取managedObjectID
NSArray*allObject=[context executeFetchRequest:fetchRequest错误：&错误]；
用于（NSManagedObject*allObject中的对象）{
[上下文删除对象：obj]；
}
NSError*saveError=nil；
[context save:&saveError]；//没有更多的值是DB
对于（int x=0；x
只需不断添加对象并将它们链接到ClubDetails，例如，假设您有一个来自某处的图像字符串数组
for (NSString *image in images)
{
    ClubDetailsImages *clubImages = [NSEntityDescription insertNewObjectForEntityForName:@"ClubDetailsImages" inManagedObjectContext:context];

    clubDetailsImages.image = image;
    clubDetailsImages.clubdetailed = club;
}


不确定您在这里要问什么，但给出了一个ClubDetails实例：
NSSet *images = club.clubdetailsimages;


另外，为什么要实现addClubdetailsimagesObject等。这不是必需的。使用XCode生成实体类，您将看到这些方法没有创建
只需不断添加对象并将它们链接到ClubDetails，例如，假设您有一个来自某处的图像字符串数组
for (NSString *image in images)
{
    ClubDetailsImages *clubImages = [NSEntityDescription insertNewObjectForEntityForName:@"ClubDetailsImages" inManagedObjectContext:context];

    clubDetailsImages.image = image;
    clubDetailsImages.clubdetailed = club;
}


不确定您在这里要问什么，但给出了一个ClubDetails实例：
NSSet *images = club.clubdetailsimages;


另外，为什么要实现addClubdetailsimagesObject等。这不是必需的。使用XCode生成实体类，您将看到这些方法没有创建。
不确定问题出在哪里？您只向ClubDetailsImages
对象添加了一个图像（手动）。要在接收的数据上添加更多迭代，并根据需要创建clubdeailsimages
对象。获取应与访问关系和迭代集合一样简单。不确定问题出在哪里？您只添加了一个