Rust
Get Individual Photo Info

Assuming we have the ID of a Photo, this example demonstrates how to retrieve the photo information and parse the JSON.
Chilkat Rust Downloads

Rust

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// This example assumes a previously obtained an access token
let oauth2 = chilkat::OAuth2::new();
oauth2.set_access_token("FACEBOOK-ACCESS-TOKEN");

let rest = chilkat::Rest::new();

// Connect to Facebook...
if rest.connect("graph.facebook.com", 443, true, true).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

// Provide the authentication credentials (i.e. the access key)
let _ = rest.set_auth_o_auth2(&oauth2);

// Assumes we've already obtained a Photo ID.
let photo_id = "10210199026347451".to_string();

let sb_path = chilkat::StringBuilder::new();
let _ = sb_path.append("/v2.7/");
let _ = sb_path.append(&photo_id);

// Select the fields we want.
// This example will select many of the possible fields.
// See https://developers.facebook.com/docs/graph-api/reference/photo/
let _ = rest.add_query_param("fields", "id,album,can_delete,can_tag,from,height,width,images,link,name,name_tags,picture,place,target");

let Ok(response_json) = rest.full_request_no_body("GET", &sb_path.get_as_string().unwrap_or_default()) else {
    println!("{}", rest.last_error_text());
    return;
};

let json = chilkat::JsonObject::new();
json.set_emit_compact(false);
let _ = json.load(&response_json);

// Show the JSON in human-readable format.
println!("{}", json.emit().unwrap_or_default());

// A sample response is shown below.
// Demonstrate how to parse values from the JSON.
println!("Album name: {}", json.string_of("album.name").unwrap_or_default());
let can_delete = json.bool_of("can_delete");
println!("Can Delete: {}", can_delete);
println!("From Name: {}", json.string_of("from.name").unwrap_or_default());
let height = json.int_of("height");
let width = json.int_of("width");
println!("Dimensions: {}x{}", width, height);
println!("First Image Source: {}", json.string_of("images[0].source").unwrap_or_default());

// A sample JSON response is shown here.  
// { 
//   "id": "10210199026347451",
//   "album": { 
//     "created_time": "2009-10-19T00:06:46+0000",
//     "name": "Timeline Photos",
//     "id": "1237223526054"
//   },
//   "can_delete": true,
//   "can_tag": true,
//   "from": { 
//     "name": "Matt Smith",
//     "id": "10224048320139890"
//   },
//   "height": 120,
//   "width": 120,
//   "images": [
//     { 
//       "height": 120,
//       "source": "https:\/\/scontent.xx.fbcdn.net\/v\/t1.0-9\/14462791_10210199026347451_7830642117574407060_n.jpg?oh=a7f9ed10cf9cd81a82adeb541c60e2e2&oe=58ABB195",
//       "width": 120
//     }
//   ],
//   "link": "https:\/\/www.facebook.com\/photo.php?fbid=10210199026347451&set=a.1237223526054.2038240.1093202869&type=3",
//   "name": "Ignore my posts -- I'm doing some testing for Facebook related programming...",
//   "picture": "https:\/\/scontent.xx.fbcdn.net\/v\/t1.0-9\/14462791_10210199026347451_7830642117574407060_n.jpg?oh=a7f9ed10cf9cd81a82adeb541c60e2e2&oe=58ABB195"
// }
//