Twitter API: Sending a Tweet

This example shows how to use the Twitter API to send a tweet. This example is the implementation of the "tweet" function of The Flatterist.

Script Code

This script looks up a compliment from the list of The Flatterist's compliments and tweets it to the designated user as both text and a link to The Flatterist.

This script already contains Twitter OAuth credentials for the user (@flatterist). To learn about how to obtain OAuth credentials for a Twitter user, see the Twitter authentication example. If you just need to obtain OAuth credentials for your own user (as in this example), you can do this directly on dev.twitter.com.

flatterist.webscript.io/tweet

local TWITTER_CREDS = {
	oauth={
		consumertoken='<twitter consumer key>',
		consumersecret='<twitter consumer secret>',
		accesstoken='<twitter access token>',
		tokensecret='<twitter access token secret>'
	}
}
local underscore = require 'underscore'
local username = request.form.username
-- Twitter usernames can't contain spaces
if username == nil or string.find(username, ' ') then return 400 end
local id = request.form.id
if id == nil then return 400 end
local from = request.form.from
if from ~= nil and string.find(from, ' ') then return 400 end
-- fetch JSON-encoded compliments
local data = json.parse(http.request {
	url = 'http://www.flatterist.com/compliments.json'
}.content)
-- find the matching compliment
-- JSON for a compliment looks like ["<id>", "<compliment text>"]
local compliment = underscore.detect(data.compliments,
	function(compliment) return compliment[1] == id end)
if compliment == nil then return 400 end
local tweet = string.format(
	'@%s %s http://www.flatterist.com/#%s',
	username, compliment[2], id)
if from ~= nil and from ~= '' then tweet = tweet .. ' (from @'..from..')' end
local response = http.request {
	url = 'https://api.twitter.com/1.1/statuses/update.json',
	data = { status = tweet },
	auth = TWITTER_CREDS
}
if response.statuscode == 200 then
	return 302, '', {
		Location = 'https://twitter.com/flatterist/status/'
		.. json.parse(response.content).id_str
	}
else
	return 400, 'Tweet failed. :-('
end

Try It!

Try it out on The Flatterist.