= fgraph

• http://github.com/jugend/fgraph

== Description

Facebook Graph Ruby API implementation with Ruby magic (http://graph.facebook.com).

== Installation

sudo gem install fgraph

== Rails Plugin Installation

Gem Plugin installation:

sudo gem install fgraph

Edit [RAILS_ROOT]/config/environment.rb

config.gem 'fgraph', :version => ">=0.2.0"

Edit [RAILS_ROOT]/Rakefile

require 'tasks/fgraph'

Create fgraph.yml config in [RAILS_ROOT]/config

rake fgraph:setup

Normal Plugin Installation:

script/plugin install http://github.com/jugend/fgraph.git

=== Facebook Graph Cheat Sheet

sudo gem install cheat cheat fbgraph

=== Single object query

Users: https://graph.facebook.com/btaylor (Bret Taylor)

FGraph.object('btaylor')

Pages: https://graph.facebook.com/cocacola (Coca-Cola page)

FGraph.object('cocacola')

Fields selection with metadata

FGraph.object('btaylor', :fields => 'id,name,picture', :metadata => 1)

Page photos

FGraph.object('/cocacola/photos') FGraph.object_photos('cocacola')

Passing object hash as id

friend = { 'name' => 'Mark Zuckerberg', 'id' => '4'} friend_details = FGraph.object(friend)

Current user: https://graph.facebook.com/me?access_token=...

FGraph.me(:access_token => '...')

Current user's friends: https://graph.facebook.com/me/friends?access_token=...

FGraph.me('friends', :access_token => '...') FGraph.me_friends(:access_token => '...')

=== Multiple objects query

Multiple users select: https://graph.facebook.com?ids=arjun,vernal

FGraph.objects('arjun', 'herryanto')

Filter fields: https://graph.facebook.com?ids=arjun,vernal&fields=id,name,picture

FGraph.objects('arjun', 'herryanto', :fields => 'id,name,picture')

Passing hash objects

FGraph.objects([{:name => 'Arjun Banker', :id => 'arjun'}, {:name => 'Herryanto Siatono', :id => 'herryanto'}])

=== Collection Response

friends = FGraph.me_friends(:limit => 5, :access_token => '...') friends.each do |friend| puts friend['name'] puts friend['id'] end

Other convenient methods

friends.next? friends.next_url friends.next_options

=== OAuth

OAuth authorization URL:

https://graph.facebook.com/oauth/authorize?

client_id=...&

redirect_uri=http://www.example.com/oauth_redirect&

scope=publish_stream

FGraph.oauth_authorize_url('[client id]', 'http://www.example.com/oauth_redirect', :scope => 'publish_stream')

OAuth Access Token:

https://graph.facebook.com/oauth/access_token?

client_id=...&

client_secret=...&

redirect_uri=http://www.example.com/oauth_redirect&

code=...

FGraph.oauth_access_token('[client id]', '[client secret]', :redirect_uri => ''http://www.example.com/oauth_redirect', :code => '[authorization code]')

OAuth Application Access Token, required to access application anlytics data:

https://graph.facebook.com/oauth/access_token?

client_id=...&

client_secret=...&

type=client_cred

FGraph.oauth_access_token('[client id]', '[client secret]', :type => 'client_cred')

=== Publish to Facebook Graph

Post to user's feed.

curl -F 'access_token=...' \

-F 'message=Hello, Arjun. I like this new API.' \

https://graph.facebook.com/arjun/feed

FGraph.publish('arjun/feed', :message => 'Hello, Arjun. I like this n ew API.', :access_token => '...') FGraph.publish_feed('arjun', :message => '...', :access_token => '... ') FGraph.publish_feed('me', :message => '...', :access_token => '...')

=== Remove from Facebook Graph

DELETE https://graph.facebook.com/ID?access_token=... HTTP/1.1

FGraph.remove('[ID]') FGraph.remove('[ID]/likes') FGraph.remove_likes('[ID]')

=== Search

https://graph.facebook.com/search?q=watermelon&type=post

FGraph.search('watermelon', :type => 'post') FGraph.search_post('watermelon')

=== Insights

https://graph.facebook.com/client_id/insights?access_token=...

FGraph.insights('[client_id]', '[app_access_token]')

https://graph.facebook.com/client_id/insights/application_api_call/day?access_token=...

FGraph.insights('[client_id]', '[app_access_token]', :metric_path => 'application_api_call/day')

=== FGraph::Client

Initialize with default options

fg_client = FGraph::Client.new(:client_id => '...', :client_secret => '...') fg_client.oauth_authorize_url('[redirect uri]', :scope => 'publish_stream') fg_client.oauth_access_token('[redirect uri]', '[authorization code]')

Intialize with access token

fg_client = FGraph::Client.new(:access_token => '...') fg_client.me fg.client.publish_feed('herryanto', :message => 'Cool!')

=== Pagination Options

• limit - max no of records
• offset - offset
• until - since (a unix timestamp or any date accepted by strtotime, e.g. yesterday)

=== Rails Helper

Sample codes:

<%= fgraph_javascript_init_tag %>

<fb:login-button autologoutlink="true" scope="email,publish_stream"></fb:login-button>

<% if fgraph_logged_in? %>
Hello <%= fgraph_user['name'] %>,
<%= fgraph_image_tag(fgraph_user, 'large') %> <% end %>

For Asynchronous load, use window.afterFbAsyncInit:

<%= fgraph_javascript_init_tag :async => true %>

Facebook invalidates session token when you log out from facebook.com, and fgraph_logged_in? does not check if the session is still valid on Facebook server. The trick is you have to catch FGraph::OAuthError in ApplicationController:

rescue_from FGraph::OAuthError do # Delete existing invalid cookies cookies.delete "fbs_#{FGraph.config['app_id']}"

# Redirect to referrer page
redirect_to request.env['REQUEST_PATH']

end

== License

(The MIT License)

Copyright (c) 2010 Herryanto Siatono

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.