(Ruby) Twitter - Get Follower IDs

Demonstrates how to get a list of follower IDs for a Twitter user. If the number of followers is more than can be returned in a single response, this example will use cursors to page through the followers.

Note: Rate limits will prevent a program from paging through huge lists of followers. In general, a maximum of 16 GET requests (pages) can be retrieved in a short period of time.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

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

# ----------------------------------------------------------------------
# This initial setup, which involves setting the OAuth1 properties and connecting
# to api.twitter.com, is only required once at the beginning.  Once connected, the same
# object instance may be re-used, and if necessary, it will automatically reconnect
# as needed.

# Assume we've previously obtained an access token and saved it to a JSON file..
json = Chilkat::CkJsonObject.new()
success = json.LoadFile("qa_data/tokens/twitter.json")

rest = Chilkat::CkRest.new()
oauth1 = Chilkat::CkOAuth1.new()

oauth1.put_ConsumerKey("TWITTER_CONSUMER_KEY")
oauth1.put_ConsumerSecret("TWITTER_CONSUMER_SECRET")
oauth1.put_Token(json.stringOf("oauth_token"))
oauth1.put_TokenSecret(json.stringOf("oauth_token_secret"))
oauth1.put_SignatureMethod("HMAC-SHA1")
oauth1.GenNonce(16)

rest.SetAuthOAuth1(oauth1,false)

bAutoReconnect = true
success = rest.Connect("api.twitter.com",443,true,bAutoReconnect)
if (success != true)
    print rest.lastErrorText() + "\n";
    exit
end

# This ends the initial setup...
# ----------------------------------------------------------------------

# This Twitter user has about 77.5K followers..
rest.AddQueryParam("screen_name","MarcusMiller959")

jsonResponse = Chilkat::CkJsonObject.new()
jsonResponse.put_EmitCompact(false)

# Get the 1st page of results using a cursor of "-1".
sbNextCursor = Chilkat::CkStringBuilder.new()
sbNextCursor.SetString("-1")

pageNum = 1
caseSensitive = false
bContinue = true
# Get a maximum of 5 pages (of 5000 ids each).
while bContinue == true

    if (sbNextCursor.ContentsEqual("0",caseSensitive) == true)
        # This will cause the loop to exit..
        bContinue = false
    else
        # Adds or replaces the query param.
        rest.AddQueryParam("cursor",sbNextCursor.getAsString())

        # Get the next page of follower IDs
        resp = rest.fullRequestNoBody("GET","/1.1/followers/ids.json")
        if (rest.get_LastMethodSuccess() != true)
            print rest.lastErrorText() + "\n";
            exit
        end

        jsonResponse.Load(resp)

        if (rest.get_ResponseStatusCode() != 200)
            print jsonResponse.emit() + "\n";
            exit
        end

        # Show the number of IDs returned in this 
        numIds = jsonResponse.SizeOfArray("ids")
        print "Page " + pageNum.to_s() + ", Number of Ids: " + numIds.to_s() + "\n";

        # Show the 1st 10 ids in this page.
        i = 0
        while i < numIds
            jsonResponse.put_I(i)
            print "    " + i.to_s() + ": " + jsonResponse.stringOf("ids[i]") + "\n";

            i = i + 1
            if (i > 10)
                # Force the loop to exit.
                i = numIds
            end

        end

        pageNum = pageNum + 1
        if (pageNum > 5)
            bContinue = false
        else
            sbNextCursor.SetString(jsonResponse.stringOf("next_cursor_str"))
        end

    end

end

# A successful JSON response for the 1st page looks like this:

# 	{
# 	  "ids": [
# 	    3140496044,
# 	    793204773751324672,
# 	    789951187781050369,
# 	    763520773587922945,
# 	    ...
# 	    15031286,
# 	    2668251246,
# 	    3751659443
# 	  ],
# 	  "next_cursor": 1531680438812851153,
# 	  "next_cursor_str": "1531680438812851153",
# 	  "previous_cursor": 0,
# 	  "previous_cursor_str": "0"
# 	}

# The output of this program looks like this:

# 	Page 1, Number of Ids: 5000
# 	    0: 931953350
# 	    1: 786708055
# 	    2: 560845700
# 	    3: 3140496044
# 	    4: 793204773751324672
# 	    5: 789951187781050369
# 	    6: 763520773587922945
# 	    7: 793143274059988992
# 	    8: 793139683412762624
# 	    9: 1588222783
# 	    10: 703821370778451968
# 	Page 2, Number of Ids: 5000
# 	    0: 15031286
# 	    1: 2668251246
# 	    2: 3751659443
# 	    3: 3324584493
# 	    4: 2440214809
# 	    5: 1322335441
# 	    6: 4439178393
# 	    7: 4911573711
# 	    8: 720792880080560128
# 	    9: 720805087124267008
# 	    10: 172926330
# 	Page 3, Number of Ids: 5000
# 	    0: 93867176
# 	    1: 2992946183
# 	    2: 2825296077
# 	    3: 3784572861
# 	    4: 2150051321
# 	    5: 2460881603
# 	    6: 4128849341
# 	    7: 2234697931
# 	    8: 2379418164
# 	    9: 3425171542
# 	    10: 325759186
# 	Page 4, Number of Ids: 5000
# 	    0: 22793412
# 	    1: 3347750489
# 	    2: 316923043
# 	    3: 2481719196
# 	    4: 3363591905
# 	    5: 3238116492
# 	    6: 58467130
# 	    7: 3015182362
# 	    8: 2985342719
# 	    9: 3095965720
# 	    10: 17505957
# 	Page 5, Number of Ids: 5000
# 	    0: 2541434684
# 	    1: 140022957
# 	    2: 134845054
# 	    3: 772810508
# 	    4: 16979294
# 	    5: 2320540225
# 	    6: 105439442
# 	    7: 2796744529
# 	    8: 251128801
# 	    9: 350229758
# 	    10: 2683994716
#