Hi Readers,

Mantle is latest and reliable framework which we can use while parsing JSON objects coming from server end. We can do this by simply initialize a class of type MTLModel.

We can understand framework working with following examples:

{
    "string": "Click Here",
    "style": "bold",
    "name": "text1",
    "alignment": "center",
}

Now create a objective-c class and in .h file implement following code:

@interface TextDataModel : MTLModel<MTLJSONSerializing>

@property (nonatomic, copy, readwrite) NSString *string;
@property (nonatomic, copy, readwrite) NSString *style;
@property (nonatomic, copy, readwrite) NSString *name;
@property (nonatomic, copy, readwrite) NSString *alignment;
@end

and in .m file add following:

@implementation TextDataModel

+ (NSDictionary *)JSONKeyPathsByPropertyKey
{
    // model_property_name : json_field_name
    return @{
             @"string":@"string",
             @"style":@"style",
             @"name":@"name",
             @"alignment":@"alignment",
             };
}
@end

This way you can simply create mantle objects and can assign these property from data coming from server.

Now we can move to more complex JSON like:

{
    widget": {
            "debug": "on",
            "window": {
                                "title": "Sample Konfabulator Widget",
                                "name": "main_window",
                            }

                   }
}

For that you have to include code in .h as following:

@interface WidgetModel : MTLModel<MTLJSONSerializing>

@property (nonatomic, copy, readwrite) NSString *debug;
@property (nonatomic, copy, readwrite) NSString *title;
@property (nonatomic, copy, readwrite) NSString *name;
@end

and in .m file add following:

@implementation WidgetModel

+ (NSDictionary *)JSONKeyPathsByPropertyKey
{
    // model_property_name : json_field_name
    return @{
             @"debug":@"debug",
             @"title":@"window.title",
             @"name":@"window.name",
             };
}
@end

You can notice a change here as window.title and window.name which we parse into json object with key name "window". 

Now server end response dictionary can be used to get required objects as :

NSError *error = nil;
id model = [MTLJSONAdapter modelOfClass:NSClassFromString(className) fromJSONDictionary:JSON error:&error];

Here className is class of model as we previously used WidgetModel and JSON is dictionary coming from server.

HAPPY CODING :)