Restkit returning nil response from Foursquare API - ios

Question

I am trying to learn RestKit through "http://www.raywenderlich.com/58682/introduction-restkit-tutorial" and was simultaneously trying out the sample code provided on the site. Well my main problem is that the RestKit is not returning the response even though the request I send to API is correct and I get the response when I test it through browser.
Here is the code from the site (only change is I am sending in some other param):
- (void)configureRestKit
{
// initialize AFNetworking HTTPClient
NSURL *baseURL = [NSURL URLWithString:#"https://api.foursquare.com"];
AFHTTPClient *client = [[AFHTTPClient alloc] initWithBaseURL:baseURL];
// initialize RestKit
RKObjectManager *objectManager = [[RKObjectManager alloc] initWithHTTPClient:client];
// setup object mappings
RKObjectMapping *venueMapping = [RKObjectMapping mappingForClass:[Venue class]];
[venueMapping addAttributeMappingsFromArray:#[#"name"]];
// register mappings with the provider using a response descriptor
RKResponseDescriptor *responseDescriptor =
[RKResponseDescriptor responseDescriptorWithMapping:venueMapping
method:RKRequestMethodGET
pathPattern:#"/v2/venues/search"
keyPath:#"response.venues"
statusCodes:[NSIndexSet indexSetWithIndex:200]];
[objectManager addResponseDescriptor:responseDescriptor];
}
- (void)loadVenues
{
NSString *near = #"Chicago, IL";
NSString *clientID = kCLIENTID;
NSString *clientSecret = kCLIENTSECRET;
NSDictionary *queryParams = #{#"near" : near,
#"client_id" : clientID,
#"client_secret" : clientSecret,
#"categoryId" : #"4bf58dd8d48988d1e0931735",
#"v" : #"20140118"};
[[RKObjectManager sharedManager] getObjectsAtPath:#"/v2/venues/search"
parameters:queryParams
success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
_venues = mappingResult.array;
[self.tableView reloadData];
}
failure:^(RKObjectRequestOperation *operation, NSError *error) {
NSLog(#"What do you mean by 'there is no coffee?': %#", error);
}];
}
Here is the API request URL:
https://api.foursquare.com/v2/venues/search?categoryId=4bf58dd8d48988d1e0931735&client_id=kCLIENTID&client_secret=kCLIENTSECRET&near=Chicago%2C%20IL&v=20150110
My 'mappingResult' object in the success block is coming out to be:
<RKMappingResult: 0x7cb4f6d0, results={
"response.venues" = (
);
}>
and 'operation' object is:
<RKObjectRequestOperation: 0x78e697c0, state: Successful, isCancelled=NO, request: <NSMutableURLRequest: 0x78e4f2f0> { URL: https://api.foursquare.com/v2/venues/search?categoryId=4bf58dd8d48988d1e0931735&client_id=kCLIENTID&client_secret=kCLIENTSECRET&near=Chicago%2C%20IL&v=20150110 }, response: <NSHTTPURLResponse: 0x79a46e40 statusCode=200 MIMEType=application/json length=35120>>
Any idea what is going on?
P.S. To test the URL I provided, you will need to replace kCLIENTID and kCLIENTSECRET with your client id and client secret info.

Answer 1

Change the queryParams to
NSString *ll = #"40.7,-74.20";
NSDictionary *queryParams = #{#"ll": ll,
#"client_id" : clientID,
#"client_secret" : clientSecret,
#"categoryId" : #"4bf58dd8d48988d1e0931735",
#"v": #"20140118"
};