mantle的Array与dictionary

json格式:

NSDictionary *dict = @{

@"name":
@"Bob",

@"cars":
@[

@{
@"make":@"ford",

@"year":
@"1972" },

@{
@"make": @"mazda",

@"year":
@"2000" }

],

@"owner":@{

@"name":@"arthur",

@"gender":@"male",

@"age":
@101,

},

@"date":@"2015-09-02"

};
//.h

#import "MTLModel.h"

#import <Mantle.h>

@interface CarModel :
MTLModel<MTLJSONSerializing>

@property (nonatomic,
copy) NSString *make;

@property (nonatomic,
copy) NSString *year;

@end

@interface Owner :
MTLModel<MTLJSONSerializing>

@property (nonatomic,
copy) NSString *name;

@property (nonatomic,
copy) NSString *gender;

@property (nonatomic)
NSInteger age;

@end

@interface TestModel :
MTLModel<MTLJSONSerializing>

@property (nonatomic,
copy) NSString *name;

@property (nonatomic,
strong) NSArray *cars;

@property (nonatomic,
strong) Owner *owner;

@property (nonatomic,
copy) NSString *ownername;

@property (nonatomic,
copy) NSString *maker;

@end

//.m

#import "TestModel.h"

@implementation CarModel

+ (NSDictionary *)JSONKeyPathsByPropertyKey{

return
@{@"make":@"make",@"year":@"year"};

}

@end

@implementation Owner

+ (NSDictionary*)JSONKeyPathsByPropertyKey{

return
@{@"name":@"name",

@"gender":@"gender",@"age":@"age",

};

}

@end

@implementation TestModel

//指向一个array的映射

+ (NSValueTransformer *)carsJSONTransformer {

return [MTLJSONAdapter
arrayTransformerWithModelClass:CarModel.class];

}

//指向一个dict的映射

+ (NSValueTransformer*)ownerJSONTransformer{

return [MTLJSONAdapter
dictionaryTransformerWithModelClass:Owner.class];

}

+ (NSDictionary *)JSONKeyPathsByPropertyKey

{

return
@{

@"name":@"name",

@"cars":@"cars",

@"owner":@"owner",

@"ownername":@"owner.name",

@"maker":@"cars",

};

}

//找出cars下第一个item的make

+ (NSValueTransformer *)makerJSONTransformer {

return [MTLValueTransformer
transformerUsingForwardBlock:^id(NSArray *cars,
BOOL *success,
NSError **error) {

return [cars.firstObject
valueForKey:@"make"];

}];

}

开始解析:

NSError *error;

TestModel *tm = [MTLJSONAdapter
modelOfClass:[TestModel
class]
fromJSONDictionary:dict error:&error];

NSLog(@"%@",tm);

CarModel *car = [tm.cars
objectAtIndex:1];

NSLog(@"%@",car.make);

Owner *owner = tm.owner;

NSLog(@"%@",owner.name);

NSLog(@"%@",tm.ownername);//直接取子类别下数据