commit 6f5e17e9428a0f4919282fb26879cba9817cdaa0
Author: J. Fernando Sánchez <balkian@gmail.com>
Date:   Thu Jun 5 07:37:29 2014 -0700

diff --git a/example.py b/example.py
new file mode 100644
index 0000000..f24813d
--- /dev/null
+++ b/example.py
@@ -0,0 +1,78 @@
+import json
+from flask import Flask, redirect, session, url_for, request, flash, render_template
+from flask_oauth import OAuth
+from flask.ext.mongoengine import MongoEngine
+from pymongo import MongoClient
+from config import *
+
+with open('config.json', 'r') as f:
+    config = json.loads(f.read())
+
+client = MongoClient()
+msettings = config['MONGODB']
+db = client[config['MONGODB']['DB']]
+db.authenticate(msettings['USERNAME'], msettings['PASSWORD'])
+
+oauth = OAuth()
+twitter = oauth.remote_app('twitter',
+            base_url='https://api.twitter.com/1/',
+            request_token_url='https://api.twitter.com/oauth/request_token',
+            access_token_url='https://api.twitter.com/oauth/access_token',
+            authorize_url='https://api.twitter.com/oauth/authenticate',
+            consumer_key= config['TWITTER']['CONSUMER_KEY'],
+            consumer_secret= config['TWITTER']['CONSUMER_SECRET']
+            )
+
+
+app = Flask(__name__)
+app.config["MONGODB_SETTINGS"] = MONGODB_SETTINGS
+app.config["SECRET_KEY"] = SECRET_KEY
+#app.config['SERVER_NAME'] = "http://demos.gsi.dit.upm.es/etsitwitter"
+
+@twitter.tokengetter
+def get_twitter_token(token=None):
+    return session.get('twitter_token')
+
+
+@app.route('/login')
+def login():
+    if session.has_key('twitter_token'):
+        del session['twitter_token']
+    return twitter.authorize(callback='http://demos.gsi.dit.upm.es/etsitwitter/oauth-authorized')
+#                                next=request.args.get('next') or request.referrer or None))
+
+@app.route('/oauth-authorized')
+@twitter.authorized_handler
+def oauth_authorized(resp):
+    next_url = '/etsitwitter/thanks'
+    if resp is None:
+        flash(u'You denied the request to sign in.')
+        return redirect(next_url)
+    token = (
+        resp['oauth_token'],
+        resp['oauth_token_secret']
+    )
+    user = resp['screen_name']
+    session['twitter_token'] = token
+    session['twitter_user'] = user
+    db["credentials"].update({"user": user }, {"user": user, "token": token}, True)
+    flash('You were signed in as %s' % resp['screen_name'])
+    return redirect(next_url)
+
+@app.route('/thanks')
+def thanks():
+    return render_template("thanks.html")
+
+@app.route('/')
+def index():
+#    return 'Please <a href="./login">LOG IN</a> to help with my research :)'
+    return render_template('home.html')
+
+@app.route('/hall')
+def hall():
+    names = [c["user"] for c in db["credentials"].find()]
+    return render_template('thanks.html', names=names)
+
+
+if __name__ == '__main__':
+    app.run()
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