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iOS

Posted by Robbert Brouwers
Robbert Brouwers
10,035 Points

iOS blog reader app: access JSON in another category

Hi all,

I'm adjusting the blog reader app code to my own wordpress website.

By using the JSON API plugin, my blog has the correct JSON data. However, my author and date info is not parsing correctly, because the author name is not in the same category as in the tutorial:

tutorial: JSON -> posts -> author

mypage: JSON -> posts -> author -> name

Now how can I change this in my code? 

 NSArray * blogPostsArray = [dataDictionary objectForKey:@"posts"];

    for (NSDictionary *bpDictionary in blogPostsArray) {
        BlogPost *blogPost = [BlogPost blogPostWithTitle: [bpDictionary objectForKey:@"title"]];
        blogPost.author = [bpDictionary objectForKey:@"author"];
        blogPost.thumbnail = [bpDictionary objectForKey:@"thumbnail"];
        blogPost.date = [bpDictionary objectForKey:@"date"];
        blogPost.url = [NSURL URLWithString:[bpDictionary objectForKey:@"url"]];
        [self.blogPosts addObject:blogPost];
    }

basically, for two of the objects i need to 'dig' one level deeper, but I can't find the right syntax to do so.

Any help would be greatly appreciated!

1 Answer

Jason Wayne
Jason Wayne
11,688 Points

Try chaining them. It'll make the code shorter and looks neater. You can try using valueForKeyPath to do so.

So for your case, it should be something like this:

NSArray * blogPostsArray = [dataDictionary objectForKey:@"posts"];

for (NSDictionary *bpDictionary in blogPostsArray) {
    BlogPost *blogPost = [BlogPost blogPostWithTitle: [bpDictionary objectForKey:@"title"]];
    blogpost.authorPostName = [bpDictionary valueForKeyPath: @"author.name"];
    [self.blogPosts addObject:blogPost];
}
Robbert Brouwers
Robbert Brouwers
10,035 Points

Exactly what I needed. Thanks a lot!