Mapping array in restkit v.20 - ios

Question

I Read From Google Places API
{
"html_attributions" : [
"Listings by \u003ca href=\"http://www.yellowpages.com.au/\"\u003eYellow Pages\u003c/a\u003e"
],
"results" : [
{
"geometry" : {
"location" : {
"lat" : -33.870540,
"lng" : 151.1988150
}
},
"icon" : "http://maps.gstatic.com/mapfiles/place_api/icons/cafe-71.png",
"id" : "c71365287e7606bd21a3311d21fda087830b7813",
"name" : "Pancakes on the Rocks",
"opening_hours" : {
"open_now" : true
},
"photos" : [
{
"height" : 1224,
"html_attributions" : [
"\u003ca href=\"https://plus.google.com/105663944571530352563\"\u003eJoshua Gilmore\u003c/a\u003e"
],
"photo_reference" : "CnRoAAAADF1JoE-joT2BSN4NEYn2luUF2kdIRjflFvETx0SbCnPyRp0TZz8_x7OlHCpAz2rrNXtQZyp5wd-JEjZh2FSpkM2bDGs_DqmktsClrnYkkirkCOHlnBHxedJf_Etv0DV8y9vnIbFnLJ9995Fk2u98SBIQxjojXwmV45p-9b4SurLQhxoUtErGJpwFe-k0hfgVGapK1FYjnWw",
"width" : 1632
}
],
"price_level" : 2,
"rating" : 3.90,
"reference" : "CoQBcgAAAFakUaktwUsNCr--KIaYu_hS9cbO8uMAwNE2W7xSMEZimIjc6EhMStq2LpVteXf6jy4UqeHGJh0QhDSpKMGK065jlnha2F6bG1zoLDRHtYTqV3PIOMMa8KsjJgmLUU-7GDojLvb6MHVctzMbMeTGtAOq_mm5lS_oymzDtJJsehSkEhCZ-KMMyl3qmYNHkCJ919FRGhSlbP1fVPQ_mLamjx9ELIBulb4ACg",
"types" : [ "cafe", "restaurant", "food", "establishment" ],
"vicinity" : "Harbourside Shopping Centre,Darling Harbour/227 & 229-230 Darling Drive, Sydney"
},
And i have Classes As Flow
Place Class:
#interface Place : NSObject
#property (nonatomic,strong) Geometry * geometry;
#property (nonatomic,strong) NSString * icon;
#property (nonatomic,strong) NSString * placeID;
#property (nonatomic,strong) NSString * name;
#property (nonatomic,strong) OpeningHours * opening_hours;
#property (nonatomic,strong) NSString * price_level;
#property (nonatomic,strong) NSString * rating;
#property (nonatomic,strong) NSString * vicinity;
#property (nonatomic,strong) NSSet *photos;
#property (nonatomic,strong) NSString *reference;
#end
And Photos Class:
#interface Photos : NSObject
#property (nonatomic,strong) NSNumber *height;
#property (nonatomic,strong) NSString *html_attributions;
#property (nonatomic,strong) NSString *photo_reference;
#property (nonatomic,strong) NSNumber *width;
#end
and i map With Follwoing:
RKObjectMapping *placeMapping = [RKObjectMapping mappingForClass:[Place class]];
[placeMapping addAttributeMappingsFromDictionary:#{
#"icon" : #"icon",
#"id" : #"placeID",
#"name" : #"name",
#"reference" : #"reference",
#"price_level" : #"price_level",
#"rating" : #"rating",
#"vicinity" : #"vicinity",
}];
// Create our new Author mapping
RKObjectMapping* geomtryMapping = [RKObjectMapping mappingForClass:[Geometry class]];
RKObjectMapping* locationMapping = [RKObjectMapping mappingForClass:[Location class]];
[locationMapping addAttributeMappingsFromArray:#[ #"lat", #"lng" ]];
[geomtryMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:#"location"
toKeyPath:#"location"
withMapping:locationMapping]];
[placeMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:#"geometry"
toKeyPath:#"geometry"
withMapping:geomtryMapping]];
RKObjectMapping* openingHoursMapping = [RKObjectMapping mappingForClass:[OpeningHours class]];
[openingHoursMapping addAttributeMappingsFromArray:#[#"open_now"]];
[placeMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:#"opening_hours" toKeyPath:#"opening_hours" withMapping:openingHoursMapping]];
RKObjectMapping* photosMapping = [RKObjectMapping mappingForClass:[Photos class]];
[photosMapping addAttributeMappingsFromArray:#[#"height",#"photo_reference",#"html_attributions",#"width"]];
[photosMapping setForceCollectionMapping:YES];
[placeMapping addPropertyMapping:[RKRelationshipMapping relationshipMappingFromKeyPath:#"photos"
toKeyPath:#"photos"
withMapping:photosMapping]];
RKResponseDescriptor * responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:placeMapping
pathPattern:nil
keyPath:#""
statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)];
[objectManager addResponseDescriptor:responseDescriptor];
first Question
I Photos Alawys have value Nil.
Second Question How I get "html_attributions" in the beginning of json.

Answer 1

keyPaths is the bit you're missing. When you say Photos is always nil, I guess you don't really get any meaningful data? To get the places you need to specify the keyPath of #"results" on your responseDescriptor.
In a similar way, you can get the html_attributions by using it as the keyPath on another set of mappings and response descriptor.