Invoking Rails Action from an iOS App

Question

I have a very simple Rails action as shown below:

def create 
    @story = Story.new(story_params)
    if(@story.save)
      render :json => {:success => 'true', :message => 'Story saved successfully!'}
    else 
      render :json => {:success => 'true', :message  => 'Error creating story'}
    end 
  end

I invoke the above method from my iPhone app using AFNetworking:

 [self POST:@"stories/create" parameters:@{@"story[title]":story.title,@"story[abstract]":story.abstract} success:^(NSURLSessionDataTask *task, id responseObject) {

        if(success) success(task,responseObject);

    } failure:^(NSURLSessionDataTask *task, NSError *error) {

        if(failure) failure(task,error);

    }];

I get the following message:

 "The operation couldn’t be completed. (Cocoa error 3840.)" (JSON text did not start with array or object and option to allow fragments not set.) UserInfo=0x8ca3500 {NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set.}

I used Charles to see the network traffic and I get the following:

story[abstract] Asd
story[title]    asdas

What does it mean and how can I get to work?

UPDATE:

I tried the other approach mentioned below but still the same issues:

 [self POST:@"stories/create" parameters:@{@"story": @{
                                                      @"title": story.title,
                                                      @"abstract": story.abstract
                                                      }
                                              }
     success:^(NSURLSessionDataTask *task, id responseObject) {

         NSLog(@"Success");

     } failure:^(NSURLSessionDataTask *task, NSError *error) {

         NSLog(@"%@",error.description);

         NSLog(@"FAILED");

     }];

This question might help explain: http://stackoverflow.com/questions/14171111/cocoa-error-3840-using-json-ios — Jim, Jan 17 '14 at 20:30
@Jim It is not the response that is causing the problem. It is the request. The data is not even reaching the rails action. — john doe, Jan 17 '14 at 20:33

score 0 · Answer 1 · answered Jan 17 '14 at 21:00

0

Not sure but this seems wrong for me :

@{@"story[title]":story.title,@"story[abstract]":story.abstract

What about

@{@"story": @{
            @"title": story.title,
            @"abstract": story.abstract
            }
 }

?

answered Jan 17 '14 at 21:00

rmonjo

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I tried your approach but get the same error. I updated the code in the original question. – john doe Jan 17 '14 at 23:31

Invoking Rails Action from an iOS App

1 Answers1