(Perl) Read a Single Facebook Post

Demonstrates how to read the contents of a single Facebook post. A post is an individual entry in a profile's feed. The profile could be a user, page, app, or group.

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

# 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
$oauth2 = chilkat::CkOAuth2->new();
$oauth2->put_AccessToken("FACEBOOK-ACCESS-TOKEN");

$rest = chilkat::CkRest->new();

# Connect to Facebook...
$success = $rest->Connect("graph.facebook.com",443,1,1);
if ($success != 1) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

# Provide the authentication credentials (i.e. the access key)
$rest->SetAuthOAuth2($oauth2);

# This example assumes a post id was already retrieved.
# For example, it could've been retrieved by reading the user's feed:
# See Parsing the Facebook User Feed for code showing how to parse the JSON feed content.

$postId = "10224048320139890_10210156138515282";

$sbPath = chilkat::CkStringBuilder->new();
$sbPath->Append("/v2.7/");
$sbPath->Append($postId);

# Select the fields we want.
# This example will select almost all the possible fields.
# See https://developers.facebook.com/docs/graph-api/reference/post/
$rest->AddQueryParam("fields","id,message,created_time,caption,description,from,link,name,object_id,picture,place,privacy,properties,shares,source,status_type,story,targeting,to,type,updated_time,with_tags");

$responseJson = $rest->fullRequestNoBody("GET",$sbPath->getAsString());
if ($rest->get_LastMethodSuccess() != 1) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

$json = chilkat::CkJsonObject->new();
$json->put_EmitCompact(0);
$json->Load($responseJson);

# Show the JSON in human-readable format.
print $json->emit() . "\r\n";

# A sample JSON response is shown here.  
# { 
#   "id": "12345678901234567_12345678900000004",
#   "message": "Ignore my posts -- I'm doing some testing for Facebook related programming...",
#   "created_time": "2016-09-29T20:46:18+0000",
#   "from": { 
#     "name": "John Doe",
#     "id": "12345678901234567"
#   },
#   "link": "https:\/\/www.facebook.com\/photo.php?fbid=10210199026247451&set=a.1237223526054.2038240.1094202869&type=3",
#   "object_id": "10210139026347451",
#   "picture": "https:\/\/scontent.xx.fbcdn.net\/v\/t1.0-9\/14462791_10210199026647451_7830642117574407060_n.jpg?oh=a7f9ed10ce9cd81a82adeb541c60e2e2&oe=58ABB195",
#   "privacy": { 
#     "allow": "",
#     "deny": "",
#     "description": "Public",
#     "friends": "",
#     "value": "EVERYONE"
#   },
#   "status_type": "added_photos",
#   "type": "photo",
#   "updated_time": "2016-09-29T20:46:18+0000"
# }

# This is the code to parse some fields in the JSON response.
print "type: " . $json->stringOf("type") . "\r\n";
print "message: " . $json->stringOf("message") . "\r\n";
print "id: " . $json->stringOf("id") . "\r\n";
print "link: " . $json->stringOf("link") . "\r\n";
print "privacy descripton: " . $json->stringOf("privacy.description") . "\r\n";

$dtime = chilkat::CkDateTime->new();
$bLocalTime = 1;
$dtime->SetFromTimestamp($json->stringOf("created_time"));
# dt is a DtObj
$dt = $dtime->GetDtObj($bLocalTime);
print $dt->get_Month() . "/" . $dt->get_Day() . "/" . $dt->get_Year() . "  " . $dt->get_Hour() . ":"
     . $dt->get_Minute() . "\r\n";