Lua 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. Lua

local chilkat = require("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
local oauth2 = chilkat.OAuth2.new()
oauth2.access_token = "FACEBOOK-ACCESS-TOKEN"

local rest = chilkat.Rest.new()

-- Connect to Facebook...
local success = rest:connect("graph.facebook.com", 443, true, true)
if not success then
    print(rest.last_error_text)
    return
end

-- Provide the authentication credentials (i.e. the access key)
rest:set_auth_oauth2(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.

local postId = "10224048320139890_10210156138515282"

local sbPath = chilkat.StringBuilder.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:add_query_param("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")

local responseJson = rest:full_request_no_body("GET", sbPath:get_as_string())
if not rest.last_method_success then
    print(rest.last_error_text)
    return
end

local json = chilkat.JsonObject.new()
json.emit_compact = false
json:load(responseJson)

-- Show the JSON in human-readable format.
print(json:emit())

-- 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:string_of("type"))
print("message: " .. json:string_of("message"))
print("id: " .. json:string_of("id"))
print("link: " .. json:string_of("link"))
print("privacy descripton: " .. json:string_of("privacy.description"))

local dtime = chilkat.DateTime.new()
local bLocalTime = true
dtime:set_from_timestamp(json:string_of("created_time"))
local dt = chilkat.DtObj.new()
dtime:to_dt_obj(bLocalTime, dt)

print(dt.month .. "/" .. dt.day .. "/" .. dt.year .. "  " .. dt.hour .. ":" .. dt.minute)