"results" empty in response

Transloadit
1

Archived from the Transloadit support forum. Originally posted on February 10, 2011; details may be outdated, see our docs for current behavior. Original thread

Hi, I was testing transloadit from an iPhone Xcode project. I was able to send a request to create a thumbnail image, but the response I received differs from the response logged at your site.

The main difference is that the “results” field was empty, e.g. “results = { }”, whereas the “results” field reported at your site for the assembly contains a lot of information.

This is the full response I obtained, versus the one at your site (omitting sensible info).

Response I obtained:
{

"assembly_id" = ...;
"assembly_url" = "http://api2.vivian.transloadit.com/assemblies/aa158...";
"bytes_expected" = 192394;
"bytes_received" = 192394;
"client_agent" = "Transloadit 1.0 (iPhone Simulator; iPhone OS 4.0.2; en_US)";
"client_ip" = "...";
"client_referer" = "";
"execution_duration" = "";
fields =     {
};
message = "The assembly is currently being executed.";
ok = "ASSEMBLY_EXECUTING";
results =     {
};
"start_date" = "2011/02/07 20:14:11 GMT";
"upload_duration" = "3.433";
uploads =     (
            {
        basename = "iphone_image";
        ext = jpg;
        field = "upload_1";
        id = ...;
        meta =             {
            aperture = "";
            city = "";
            country = "";
            "country_code" = "";
            "date_file_created" = "";
            "date_file_modified" = "2011/02/07 20:14:14 GMT";
            "date_recorded" = "";
            description = "";
            "device_name" = "";
            "device_software" = "";
            "device_vendor" = "";
            "exposure_compensation" = "";
            "exposure_mode" = "";
            "exposure_time" = "";
            "f_number" = "";
            flash = "";
            "focal_length" = "";
            "frame_count" = "";
            height = 768;
            iso = "";
            keywords = "";
            latitude = "";
            "light_value" = "";
            location = "";
            longitude = "";
            "metering_mode" = "";
            "shutter_speed" = "";
            state = "";
            title = "";
            "white_balance" = "";
            width = 1024;
        };
        mime = "image/jpeg";
        name = "iphone_image.jpg";
        "original_id" = ...;
        size = 191927;
        type = image;
        url = "http://tmp.vivian.transloadit.com/upload/....jpg";
    }
);

}

Response reported at your site:

{ ok, assembly_id, assembly_url, bytes_received, bytes_expected, client_ip, client_referer, upload_duration, execution_duration, fields, uploads

  "id":"...",
  "name":"iphone_image.jpg",
  "basename":"iphone_image",
  "ext":"jpg",
  "size":191927,
  "mime":"image/jpeg",
  "type":"image",
  "field":"upload_1",
  "original_id":"...",
  "url":"http://tmp.vivian.transloadit.com/upload/....jpg",
  "meta":{
    "width":1024,
    "height":768,
    "date_recorded":null,
    "date_file_created":null,
    "date_file_modified":"2011/02/07 20:14:14 GMT",
    "title":null,
    "description":null,
    "location":null,
    "city":null,
    "state":null,
    "country":null,
    "country_code":null,
    "keywords":null,
    "aperture":null,
    "exposure_compensation":null,
    "exposure_mode":null,
    "exposure_time":null,
    "flash":null,
    "focal_length":null,
    "f_number":null,
    "iso":null,
    "light_value":null,
    "metering_mode":null,
    "shutter_speed":null,
    "white_balance":null,
    "device_name":null,
    "device_vendor":null,
    "device_software":null,
    "latitude":null,
    "longitude":null,
    "frame_count":null
  }
}

], results

"thumb":[{
    "id":"...",
    "name":"iphone_image.jpg",
    "basename":"iphone_image",
    "ext":"jpg",
    "size":3557,
    "mime":"image/jpeg",
    "type":"image",
    "field":"upload_1",
    "original_id":"...",
    "url":"http://tmp.vivian.transloadit.com/scratch/...",
    "meta":{
      "width":88,
      "height":88,
      "date_recorded":null,
      "date_file_created":null,
      "date_file_modified":"2011/02/07 20:14:14 GMT",
      "title":null,
      "description":null,
      "location":null,
      "city":null,
      "state":null,
      "country":null,
      "country_code":null,
      "keywords":null,
      "aperture":null,
      "exposure_compensation":null,
      "exposure_mode":null,
      "exposure_time":null,
      "flash":null,
      "focal_length":null,
      "f_number":null,
      "iso":null,
      "light_value":null,
      "metering_mode":null,
      "shutter_speed":null,
      "white_balance":null,
      "device_name":null,
      "device_vendor":null,
      "device_software":null,
      "latitude":null,
      "longitude":null,
      "frame_count":null
    }
  }
]

} }

Thanks for your help.

Jose Enrique

2

Hi Jose,

the response you get from the iPhone SDK does not have the result yet, because the assembly is still in ASSEMBLY_EXECUTING status.

To get the final response you need to either poll the assembly_url periodically, or you can also add a parameter called blocking: true. That is only recommended for images so, because the connection will stay open until the assembly has completed.

HTH,
--fg

3

I see, I’ll give it a try. Thanks for prompt your assistance!