How to send recursive json request with nsmutableurlrequest in ios? - ios

Question

in iOS to create this
"{
"email":string,
"password":string
}"
json request body, i am passing the nsdata that i create from the string
email=myname#domain.com&password=mypassword
to the setHTTPBody method of the NSMutableURLRequest.This works fine im ok with this.
But what if i want to create this
"{
"post":
{
"title":string,
"room_id":int,
"content":string,
}
}"
json request body? i tried to make some string combinations to solve this recursion but didnt work out really. I also checked the methods of NSMutableURLRequest but i couldnt find something related to solve this.
edit:
This creates the post as it should be its fine, but i need an equivalent to the string email=myname#domain.com&password=mypassword for the recursive case. When i send the data as it should be it does not work. When i send as the string that i provided it works.
NSString *usertoken = [appDelegate token];
NSString *posttopic = #"111testtopic";
NSString *postbody = #"111testbody";
NSDictionary *dict = #{#"post":#{#"title":posttopic,#"room_id":#"246",#"content":postbody}};
NSData *body = [NSJSONSerialization dataWithJSONObject:dict
options:NSJSONWritingPrettyPrinted
error:nil];
NSString *postLength = [NSString stringWithFormat:#"%d", [body length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
//send the post
NSString *urlstring = [NSString stringWithFormat:#"http://mydomain.com/posts.json?auth_token=%#", usertoken];
[request setURL:[NSURL URLWithString:urlstring]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setValue:#"application/x-www-form-urlencoded;charset=UTF-8" forHTTPHeaderField:#"Content-Type"];
[request setHTTPBody:body];
NSURLResponse *response;
NSData *POSTReply = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:nil];

Answer 1

Try this
NSDictionary *dict = #{#"post":#{#"title":string,#"room_id":int,#"content":string}};
NSData *body = [NSJSONSerialization dataWithJSONObject:dict
options:NSJSONWritingPrettyPrinted
error:&error];
the idea is to use some nested dictionaries to describe your json and serialize them to get your jsonData to pass to the request.