Home

Awesome

YYModel

License MIT  Carthage compatible  CocoaPods  CocoaPods  Build Status  codecov.io

High performance model framework for iOS/OSX.<br/> (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

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.

<table> <thead> <tr> <th>JSON/Dictionary</th> <th>Model</th> </tr> </thead> <tbody> <tr> <td>NSString</td> <td>NSNumber,NSURL,SEL,Class</td> </tr> <tr> <td>NSNumber</td> <td>NSString</td> </tr> <tr> <td>NSString/NSNumber</td> <td>C number (BOOL,int,float,NSUInteger,UInt64,...)<br/> NaN and Inf will be ignored</td> </tr> <tr> <td>NSString</td> <td>NSDate parsed with these formats:<br/> yyyy-MM-dd<br/> yyyy-MM-dd HH:mm:ss<br/> yyyy-MM-dd'T'HH:mm:ss<br/> yyyy-MM-dd'T'HH:mm:ssZ<br/> EEE MMM dd HH:mm:ss Z yyyy </td> </tr> <tr> <td>NSDate</td> <td>NSString formatted with ISO8601:<br/> "YYYY-MM-dd'T'HH:mm:ssZ"</td> </tr> <tr> <td>NSValue</td> <td>struct (CGRect,CGSize,...)</td> </tr> <tr> <td>NSNull</td> <td>nil,0</td> </tr> <tr> <td>"no","false",...</td> <td>@(NO),0</td> </tr> <tr> <td>"yes","true",...</td> <td>@(YES),1</td> </tr> </tbody> </table>

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.<br/> You can also install documentation locally using appledoc.

Requirements

This library requires iOS 6.0+ and Xcode 8.0+.

License

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

<br/><br/>

中文介绍

高性能 iOS/OSX 模型转换框架。<br/> (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

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。

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

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 8.0

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