Tcl Requires Chilkat v11.0.0+

Read a Single Facebook Post

See more Facebook Examples

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. Tcl

load ./chilkat.dll

set success 0

#  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
set oauth2 [new_CkOAuth2]

CkOAuth2_put_AccessToken $oauth2 "FACEBOOK-ACCESS-TOKEN"

set rest [new_CkRest]

#  Connect to Facebook...
set success [CkRest_Connect $rest "graph.facebook.com" 443 1 1]
if {$success == 0} then {
    puts [CkRest_lastErrorText $rest]
    delete_CkOAuth2 $oauth2
    delete_CkRest $rest
    exit
}

#  Provide the authentication credentials (i.e. the access key)
CkRest_SetAuthOAuth2 $rest $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.

set postId "10224048320139890_10210156138515282"

set sbPath [new_CkStringBuilder]

CkStringBuilder_Append $sbPath "/v2.7/"
CkStringBuilder_Append $sbPath $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/
CkRest_AddQueryParam $rest "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"

set responseJson [CkRest_fullRequestNoBody $rest "GET" [CkStringBuilder_getAsString $sbPath]]
if {[CkRest_get_LastMethodSuccess $rest] == 0} then {
    puts [CkRest_lastErrorText $rest]
    delete_CkOAuth2 $oauth2
    delete_CkRest $rest
    delete_CkStringBuilder $sbPath
    exit
}

set json [new_CkJsonObject]

CkJsonObject_put_EmitCompact $json 0
CkJsonObject_Load $json $responseJson

#  Show the JSON in human-readable format.
puts [CkJsonObject_emit $json]

#  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.
puts "type: [CkJsonObject_stringOf $json type]"
puts "message: [CkJsonObject_stringOf $json message]"
puts "id: [CkJsonObject_stringOf $json id]"
puts "link: [CkJsonObject_stringOf $json link]"
puts "privacy descripton: [CkJsonObject_stringOf $json privacy.description]"

set dtime [new_CkDateTime]

set bLocalTime 1
CkDateTime_SetFromTimestamp $dtime [CkJsonObject_stringOf $json "created_time"]
set dt [new_CkDtObj]

CkDateTime_ToDtObj $dtime $bLocalTime $dt

puts [CkDtObj_get_Month $dt]/[CkDtObj_get_Day $dt]/[CkDtObj_get_Year $dt]  [CkDtObj_get_Hour $dt]:[CkDtObj_get_Minute $dt]

delete_CkOAuth2 $oauth2
delete_CkRest $rest
delete_CkStringBuilder $sbPath
delete_CkJsonObject $json
delete_CkDateTime $dtime
delete_CkDtObj $dt