JDCJsonExtension

Example

Let's say you have a json text like this.

{
    "p_name":"jack",
    "p_text":"Hello world",
    "p_url":"https://github.com",
    "items":[
        {
        "id":1,
        "title":"test1"
        },
        {
        "id":2,
        "title":"test2"
        },
        {
        "id":3,
        "title":"test3"
        }
    ]
}

You could define models as follows.

@interface JDCCustomModel : NSObject

@property (nonatomic,strong) NSString *name;
@property (nonatomic,strong) NSString *text;
@property (nonatomic,strong) NSString *coverUrl;

@property (nonatomic,strong) NSArray *submodels;


+ (NSDictionary *)jdc_KeyPathToClassNameMapper;
+ (NSDictionary *)jdc_jsonSerializationKeyMapper;

@end

@interface JDCCustomSubModel : NSObject

@property (nonatomic,strong) NSString *mid;
@property (nonatomic,strong) NSString *title;

+ (NSDictionary *)jdc_jsonSerializationKeyMapper;

@end

Then you just needs to add some mapping to the keys and custom class type.

@implementation JDCCustomModel
+ (NSDictionary *)jdc_jsonSerializationKeyMapper
{
    return @{
        @"name":@"p_name",
        @"text":@"p_text",
        @"coverUrl":@"p_url",
        @"submodels":@"items",
    };
}

+ (NSDictionary *)jdc_KeyPathToClassNameMapper
{
    return @{
        @"submodels":NSStringFromClass([JDCCustomSubModel class])
    };
}
@end

@implementation JDCCustomSubModel
+ (NSDictionary *)jdc_jsonSerializationKeyMapper
{
    return @{@"mid":@"id"};
}

@end

Models are all set, let's initialize it with json data.

    NSString *path = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"json"];
    NSError *err = nil;
    NSString *jsonStr = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:&err];
    if (!err) {
        JDCCustomModel *model = [[JDCCustomModel alloc] initWithJsonString:jsonStr error:&err];
    if (err) {
        NSLog(@"Failed !");
    }else{
        //NSCoding stuff.
        NSData *archived = [NSKeyedArchiver archivedDataWithRootObject:model];
        JDCCustomModel *unarchivedModel = [NSKeyedUnarchiver unarchiveObjectWithData:archived];
    }

To run the example project, clone the repo, and run pod install from the Example directory first.

Requirements

Installation

JDCJsonExtension is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod "JDCJsonExtension"

Author

Jidong Chen jidongchen93@gmail.com

License

JDCJsonExtension is available under the MIT license. See the LICENSE file for more info.