JSONModel library / model collection wrong - ios

Question

I'm using JSONMODEl (https://github.com/icanzilb/JSONModel) to parse a wordpress JSON FEED (with json-api).
Everything go's well except if I want the "comments".
my feed is like that :
comments = (
{
content = "<p>My comment</p>\n";
date = "2014-08-29 20:56:29";
id = 97813;
name = johndoe;
parent = 0;
url = "http://www.google.com";
}
);
so I try to make my "newsmodel" like that :
#import "JSONModel.h"
#import "commentmodel.h"
#protocol NewsModel #end
#interface NewsModel : JSONModel
#property (strong, nonatomic) NSString* title;
#property (strong, nonatomic) NSString* content;
#property (strong, nonatomic) NSString* thumbnail_images;
#property (strong, nonatomic) NSString* premium;
#property (strong, nonatomic) NSString* id;
#property (strong, nonatomic) CommentModel* comments;
#end
and my commentmodel like that
#import "JSONModel.h"
#interface CommentModel : JSONModel
#property (assign, nonatomic) int id;
#property (strong, nonatomic) NSString* name;
#property (assign, nonatomic) NSString* content;
#end
But When I try to build my app, my "feed" is empty.
if I comment the "comment" part of the news model, I got the content....
I think I'm stuck somewhere, but where ! If someone ave an idea :)
Many thanks

Answer 1

comments is an array, not a single comment, notice the top level ( and ) which designate an array in a NSDictionary NSLog(). Inside of the is an array element designated by { and }.
But the NewsModel has comments defined as a single comment (CommentModel), not an array. it should probably be declared:
In the docs see Model collections and how products is handled.
You will have to declare a protocol, see the example protocol at the top of the "Model collections" examples.
#protocol CommentModel
#end
Above:
#interface CommentModel : JSONModel
#property (strong, nonatomic) NSArray< CommentModel >* comments;

Answer 2

#protocol CommentModel
#end
#interface CommentModel : JSONModel
#property (assign, nonatomic) int id;
#property (strong, nonatomic) NSString* name;
#property (assign, nonatomic) NSString* content;
#end
#interface NewsModel : JSONModel
#property (strong, nonatomic) NSString* title;
#property (strong, nonatomic) NSString* content;
#property (strong, nonatomic) NSString* thumbnail_images;
#property (strong, nonatomic) NSString* premium;
#property (strong, nonatomic) NSString* id; //int?
#property (strong, nonatomic) NSArray<CommentModel>* comments;
#end

Answer 3

Thanks, got it to build, but now If i try to alloc it with
#try {
_feed = [[NewsFeed alloc] initWithDictionary:obj error:nil];
}
#catch (NSException *e) {
NSLog(#"Parse error : %# reason %#", [e name], [e reason]);
}
I got a Bad property protocol declaration reason is not allowed JSONModel property protocol, and not a JSONModel class.
my news feed is like that
#interface NewsFeed : JSONModel
#property (nonatomic, strong) NSArray <NewsModel> *posts;
#end
And work like a charme without the "comment" part...
Thanks

Answer 4

As an addition to the answers above, since I can't add a comment yet, all you have to do, is add an empty protocol with the same name, like this:
#protocol CommentModel
#end
Then, as noted here JsonModel documentation, notation would be different than a notation. The first one is a protocol declaration needed for JsonModel to work, the other one is an objc compiler helper declaration. You can combine them as noted in the same example:
#property (nonatomic) NSArray<ProductModel *> <ProductModel> *products;