Latest 1.0.4
Homepage https://github.com/ibireme/YYModel
License MIT
Platforms ios 6.0, osx 10.7, watchos 2.0, tvos 9.0, requires ARC
Frameworks Foundation, CoreFoundation
Authors

YYModel

License MIT 
Carthage compatible 
[CocoaPods](http://cocoapods.org/?q= YYModel) 
[CocoaPods](http://cocoapods.org/?q= YYModel) 
Build Status 
codecov.io

High performance model framework for iOS/OSX.
(It’s a component of YYKit)

Performance

Time cost (process GithubUser 10000 times on iPhone 6):

Benchmark result

See Benchmark/ModelBenchmark.xcodeproj for more benchmark case.

Features

  • High performance: The conversion performance is close to handwriting code.
  • Automatic type conversion: The object types can be automatically converted.
  • Type Safe: All data types will be verified to ensure type-safe during the conversion process.
  • Non-intrusive: There is no need to make the model class inherit from other base class.
  • Lightwight: This library contains only 5 files.
  • Docs and unit testing: 100% docs coverage, 99.6% code coverage.

Usage

Simple model json convert

// JSON:
{
    "uid":123456,
    "name":"Harry",
    "created":"1965-07-31T00:00:00+0000"
}

// Model:
@interface User : NSObject
@property UInt64 uid;
@property NSString *name;
@property NSDate *created;
@end
@implementation User
@end

// Convert json to model:
User *user = [User yy_modelWithJSON:json];

// Convert model to json:
NSDictionary *json = [user yy_modelToJSONObject];

If the type of an object in JSON/Dictionary cannot be matched to the property of the model, the following automatic conversion is performed. If the automatic conversion failed, the value will be ignored.

JSON/Dictionary Model
NSString NSNumber,NSURL,SEL,Class
NSNumber NSString
NSString/NSNumber C number (BOOL,int,float,NSUInteger,UInt64,…)
NaN and Inf will be ignored
NSString NSDate parsed with these formats:
yyyy-MM-dd
yyyy-MM-dd HH:mm:ss
yyyy-MM-dd’T’HH:mm:ss
yyyy-MM-dd’T’HH:mm:ssZ
EEE MMM dd HH:mm:ss Z yyyy
NSDate NSString formatted with ISO8601:
“YYYY-MM-dd’T’HH:mm:ssZ”
NSValue struct (CGRect,CGSize,…)
NSNull nil,0
“no”,”false”,… @(NO),0
“yes”,”true”,… @(YES),1

Match model property to different JSON key

// JSON:
{
    "n":"Harry Pottery",
    "p": 256,
    "ext" : {
        "desc" : "A book written by J.K.Rowing."
    },
    "ID" : 100010
}

// Model:
@interface Book : NSObject
@property NSString *name;
@property NSInteger page;
@property NSString *desc;
@property NSString *bookID;
@end
@implementation Book
+ (NSDictionary *)modelCustomPropertyMapper {
    return @{@"name" : @"n",
             @"page" : @"p",
             @"desc" : @"ext.desc",
             @"bookID" : @[@"id",@"ID",@"book_id"]};
}
@end

You can map a json key (key path) or an array of json key (key path) to one or multiple property name. If there’s no mapper for a property, it will use the property’s name as default.

Nested model

// JSON
{
    "author":{
        "name":"J.K.Rowling",
        "birthday":"1965-07-31T00:00:00+0000"
    },
    "name":"Harry Potter",
    "pages":256
}

// Model: (no need to do anything)
@interface Author : NSObject
@property NSString *name;
@property NSDate *birthday;
@end
@implementation Author
@end

@interface Book : NSObject
@property NSString *name;
@property NSUInteger pages;
@property Author *author;
@end
@implementation Book
@end

Container property

@class Shadow, Border, Attachment;

@interface Attributes
@property NSString *name;
@property NSArray *shadows; //Array<Shadow>
@property NSSet *borders; //Set<Border>
@property NSMutableDictionary *attachments; //Dict<NSString,Attachment>
@end

@implementation Attributes
+ (NSDictionary *)modelContainerPropertyGenericClass {
    // value should be Class or Class name.
    return @{@"shadows" : [Shadow class],
             @"borders" : Border.class,
             @"attachments" : @"Attachment" };
}
@end

Whitelist and blacklist

@interface User
@property NSString *name;
@property NSUInteger age;
@end

@implementation Attributes
+ (NSArray *)modelPropertyBlacklist {
    return @[@"test1", @"test2"];
}
+ (NSArray *)modelPropertyWhitelist {
    return @[@"name"];
}
@end

Data validate and custom transform

// JSON:
{
    "name":"Harry",
    "timestamp" : 1445534567
}

// Model:
@interface User
@property NSString *name;
@property NSDate *createdAt;
@end

@implementation User
- (BOOL)modelCustomTransformFromDictionary:(NSDictionary *)dic {
    NSNumber *timestamp = dic[@"timestamp"];
    if (![timestamp isKindOfClass:[NSNumber class]]) return NO;
    _createdAt = [NSDate dateWithTimeIntervalSince1970:timestamp.floatValue];
    return YES;
}
- (BOOL)modelCustomTransformToDictionary:(NSMutableDictionary *)dic {
    if (!_createdAt) return NO;
    dic[@"timestamp"] = @(n.timeIntervalSince1970);
    return YES;
}
@end

Coding/Copying/hash/equal/description

@interface YYShadow :NSObject <NSCoding, NSCopying>
@property (nonatomic, copy) NSString *name;
@property (nonatomic, assign) CGSize size;
@end

@implementation YYShadow
- (void)encodeWithCoder:(NSCoder *)aCoder { [self yy_modelEncodeWithCoder:aCoder]; }
- (id)initWithCoder:(NSCoder *)aDecoder { self = [super init]; return [self yy_modelInitWithCoder:aDecoder]; }
- (id)copyWithZone:(NSZone *)zone { return [self yy_modelCopy]; }
- (NSUInteger)hash { return [self yy_modelHash]; }
- (BOOL)isEqual:(id)object { return [self yy_modelIsEqual:object]; }
- (NSString *)description { return [self yy_modelDescription]; }
@end

Installation

CocoaPods

  1. Add pod 'YYModel' to your Podfile.
  2. Run pod install or pod update.
  3. Import <YYModel/YYModel.h>.

Carthage

  1. Add github "ibireme/YYModel" to your Cartfile.
  2. Run carthage update --platform ios and add the framework to your project.
  3. Import <YYModel/YYModel.h>.

Manually

  1. Download all the files in the YYModel subdirectory.
  2. Add the source files to your Xcode project.
  3. Import YYModel.h.

Documentation

Full API documentation is available on CocoaDocs.
You can also install documentation locally using appledoc.

Requirements

This library requires iOS 6.0+ and Xcode 7.0+.

License

YYModel is provided under the MIT license. See LICENSE file for details.

中文介绍

高性能 iOS/OSX 模型转换框架。
(该项目是 YYKit 组件之一)

性能

处理 GithubUser 数据 10000 次耗时统计 (iPhone 6):

Benchmark result

更多测试代码和用例见 Benchmark/ModelBenchmark.xcodeproj

特性

  • 高性能: 模型转换性能接近手写解析代码。
  • 自动类型转换: 对象类型可以自动转换,详情见下方表格。
  • 类型安全: 转换过程中,所有的数据类型都会被检测一遍,以保证类型安全,避免崩溃问题。
  • 无侵入性: 模型无需继承自其他基类。
  • 轻量: 该框架只有 5 个文件 (包括.h文件)。
  • 文档和单元测试: 文档覆盖率100%, 代码覆盖率99.6%。

使用方法

简单的 Model 与 JSON 相互转换

// JSON:
{
    "uid":123456,
    "name":"Harry",
    "created":"1965-07-31T00:00:00+0000"
}

// Model:
@interface User : NSObject
@property UInt64 uid;
@property NSString *name;
@property NSDate *created;
@end
@implementation User
@end

// 将 JSON (NSData,NSString,NSDictionary) 转换为 Model:
User *user = [User yy_modelWithJSON:json];

// 将 Model 转换为 JSON 对象:
NSDictionary *json = [user yy_modelToJSONObject];

当 JSON/Dictionary 中的对象类型与 Model 属性不一致时,YYModel 将会进行如下自动转换。自动转换不支持的值将会被忽略,以避免各种潜在的崩溃问题。

JSON/Dictionary Model
NSString NSNumber,NSURL,SEL,Class
NSNumber NSString
NSString/NSNumber 基础类型 (BOOL,int,float,NSUInteger,UInt64,…)
NaN 和 Inf 会被忽略
NSString NSDate 以下列格式解析:
yyyy-MM-dd
yyyy-MM-dd HH:mm:ss
yyyy-MM-dd’T’HH:mm:ss
yyyy-MM-dd’T’HH:mm:ssZ
EEE MMM dd HH:mm:ss Z yyyy
NSDate NSString 格式化为 ISO8601:
“YYYY-MM-dd’T’HH:mm:ssZ”
NSValue struct (CGRect,CGSize,…)
NSNull nil,0
“no”,”false”,… @(NO),0
“yes”,”true”,… @(YES),1

Model 属性名和 JSON 中的 Key 不相同

// JSON:
{
    "n":"Harry Pottery",
    "p": 256,
    "ext" : {
        "desc" : "A book written by J.K.Rowing."
    },
    "ID" : 100010
}

// Model:
@interface Book : NSObject
@property NSString *name;
@property NSInteger page;
@property NSString *desc;
@property NSString *bookID;
@end
@implementation Book
//返回一个 Dict,将 Model 属性名对映射到 JSON 的 Key。
+ (NSDictionary *)modelCustomPropertyMapper {
    return @{@"name" : @"n",
             @"page" : @"p",
             @"desc" : @"ext.desc",
             @"bookID" : @[@"id",@"ID",@"book_id"]};
}
@end

你可以把一个或一组 json key (key path) 映射到一个或多个属性。如果一个属性没有映射关系,那默认会使用相同属性名作为映射。

在 json->model 的过程中:如果一个属性对应了多个 json key,那么转换过程会按顺序查找,并使用第一个不为空的值。

在 model->json 的过程中:如果一个属性对应了多个 json key (key path),那么转换过程仅会处理第一个 json key (key path);如果多个属性对应了同一个 json key,则转换过过程会使用其中任意一个不为空的值。

Model 包含其他 Model

// JSON
{
    "author":{
        "name":"J.K.Rowling",
        "birthday":"1965-07-31T00:00:00+0000"
    },
    "name":"Harry Potter",
    "pages":256
}

// Model: 什么都不用做,转换会自动完成
@interface Author : NSObject
@property NSString *name;
@property NSDate *birthday;
@end
@implementation Author
@end

@interface Book : NSObject
@property NSString *name;
@property NSUInteger pages;
@property Author *author; //Book 包含 Author 属性
@end
@implementation Book
@end

容器类属性

@class Shadow, Border, Attachment;

@interface Attributes
@property NSString *name;
@property NSArray *shadows; //Array<Shadow>
@property NSSet *borders; //Set<Border>
@property NSMutableDictionary *attachments; //Dict<NSString,Attachment>
@end

@implementation Attributes
// 返回容器类中的所需要存放的数据类型 (以 Class 或 Class Name 的形式)。
+ (NSDictionary *)modelContainerPropertyGenericClass {
    return @{@"shadows" : [Shadow class],
             @"borders" : Border.class,
             @"attachments" : @"Attachment" };
}
@end

黑名单与白名单

@interface User
@property NSString *name;
@property NSUInteger age;
@end

@implementation Attributes
// 如果实现了该方法,则处理过程中会忽略该列表内的所有属性
+ (NSArray *)modelPropertyBlacklist {
    return @[@"test1", @"test2"];
}
// 如果实现了该方法,则处理过程中不会处理该列表外的属性。
+ (NSArray *)modelPropertyWhitelist {
    return @[@"name"];
}
@end

数据校验与自定义转换

// JSON:
{
    "name":"Harry",
    "timestamp" : 1445534567
}

// Model:
@interface User
@property NSString *name;
@property NSDate *createdAt;
@end

@implementation User
// 当 JSON 转为 Model 完成后,该方法会被调用。
// 你可以在这里对数据进行校验,如果校验不通过,可以返回 NO,则该 Model 会被忽略。
// 你也可以在这里做一些自动转换不能完成的工作。
- (BOOL)modelCustomTransformFromDictionary:(NSDictionary *)dic {
    NSNumber *timestamp = dic[@"timestamp"];
    if (![timestamp isKindOfClass:[NSNumber class]]) return NO;
    _createdAt = [NSDate dateWithTimeIntervalSince1970:timestamp.floatValue];
    return YES;
}

// 当 Model 转为 JSON 完成后,该方法会被调用。
// 你可以在这里对数据进行校验,如果校验不通过,可以返回 NO,则该 Model 会被忽略。
// 你也可以在这里做一些自动转换不能完成的工作。
- (BOOL)modelCustomTransformToDictionary:(NSMutableDictionary *)dic {
    if (!_createdAt) return NO;
    dic[@"timestamp"] = @(n.timeIntervalSince1970);
    return YES;
}
@end

Coding/Copying/hash/equal/description

@interface YYShadow :NSObject <NSCoding, NSCopying>
@property (nonatomic, copy) NSString *name;
@property (nonatomic, assign) CGSize size;
@end

@implementation YYShadow
// 直接添加以下代码即可自动完成
- (void)encodeWithCoder:(NSCoder *)aCoder { [self yy_modelEncodeWithCoder:aCoder]; }
- (id)initWithCoder:(NSCoder *)aDecoder { self = [super init]; return [self yy_modelInitWithCoder:aDecoder]; }
- (id)copyWithZone:(NSZone *)zone { return [self yy_modelCopy]; }
- (NSUInteger)hash { return [self yy_modelHash]; }
- (BOOL)isEqual:(id)object { return [self yy_modelIsEqual:object]; }
- (NSString *)description { return [self yy_modelDescription]; }
@end

安装

CocoaPods

  1. 在 Podfile 中添加 pod 'YYModel'
  2. 执行 pod installpod update
  3. 导入 <YYModel/YYModel.h>。

Carthage

  1. 在 Cartfile 中添加 github "ibireme/YYModel"
  2. 执行 carthage update --platform ios 并将生成的 framework 添加到你的工程。
  3. 导入 <YYModel/YYModel.h>。

手动安装

  1. 下载 YYModel 文件夹内的所有内容。
  2. 将 YYModel 内的源文件添加(拖放)到你的工程。
  3. 导入 YYModel.h

文档

你可以在 CocoaDocs 查看在线 API 文档,也可以用 appledoc 本地生成文档。

系统要求

该项目最低支持 iOS 6.0Xcode 7.0

许可证

YYModel 使用 MIT 许可证,详情见 LICENSE 文件。

相关链接

iOS JSON 模型转换库评测

Latest podspec

{
    "name": "[email protected]",
    "summary": "High performance model framework for iOS/OSX.",
    "version": "1.0.4",
    "license": {
        "type": "MIT",
        "file": "LICENSE"
    },
    "authors": {
        "ibireme": "[email protected]"
    },
    "social_media_url": "http://blog.ibireme.com",
    "homepage": "https://github.com/ibireme/YYModel",
    "platforms": {
        "ios": "6.0",
        "osx": "10.7",
        "watchos": "2.0",
        "tvos": "9.0"
    },
    "source": {
        "git": "https://github.com/mrdaios/YYModel.git",
        "tag": "1.0.4"
    },
    "requires_arc": true,
    "source_files": "YYModel/*.{h,m}",
    "public_header_files": "YYModel/*.{h}",
    "frameworks": [
        "Foundation",
        "CoreFoundation"
    ]
}

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