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main.py
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main.py
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# all the imports
import sqlite3
from flask import Flask, request, session, g, redirect, url_for, \
abort, render_template, flash
from contextlib import closing
from lib import db
# configuration
DATABASE = '/tmp/flaskr.db'
DEBUG = True
SECRET_KEY = 'development key'
USERNAME = 'admin'
PASSWORD = 'default'
# create our little application :)
app = Flask(__name__)
app.config.from_object(__name__)
def connect_db():
return sqlite3.connect(app.config['DATABASE'])
#>>> from main import init_db
#>>> init_db()
#>>> exit
def init_db():
with closing(connect_db()) as db:
with app.open_resource('schema.sql', mode='r') as f:
db.cursor().executescript(f.read())
db.commit()
@app.before_request
def before_request():
g.db = connect_db()
g.mydb = db.db ()
@app.teardown_request
def teardown_request(exception):
db = getattr(g, 'db', None)
if db is not None:
db.close()
@app.route('/')
def show_entries():
if not session.get('logged_in'):
return render_template('login.html')
entries = g.mydb.getMyEntries ( session['user_id'])
return render_template('show_entries.html', entries=entries)
@app.route('/add', methods=['GET', 'POST'])
def add_entry():
error = None
if request.method == 'POST':
g.db.execute('insert into entries (title, text) values (?, ?)',[request.form['title'], request.form['text']])
g.db.commit()
flash('New entry was successfully posted')
return redirect(url_for('show_entries'))
return render_template('add_entries.html', error=error)
@app.route('/about')
def about ():
return render_template('about.html')
@app.route( '/labeler', methods=['GET', 'POST'])
def start_label ():
if not session.get('logged_in'):
return render_template('login.html')
if 'labels' not in session:
session ['labels'] = g.mydb.getLabels ()
if request.method == 'POST':
g.mydb.addLabel (request.form ['data_id'], request.form ['label_id'], session['user_id'])
if len ( session ['labelentries'] ) == 0:
flash('No more data')
return redirect(url_for('show_entries'))
else:
id = session ['labelentries'].pop ()
url = g.mydb.getData ( id )
else:
session ['labelentries'] = g.mydb.getIdsSession ()
if len ( session ['labelentries'] ) == 0:
flash('No more data')
return redirect(url_for('show_entries'))
else:
id = session ['labelentries'].pop ()
url = g.mydb.getData ( id )
return render_template('labeler.html', id=id, url=url, labels=session['labels'])
@app.route('/login', methods=['GET', 'POST'])
def login():
error = None
if request.method == 'POST':
if not ( g.mydb.checkUser (request.form['username'], request.form['password'] )):
error = 'Invalid password or Username'
else:
session['logged_in'] = True
session['user_id'] = g.mydb.getUserId (request.form['username'])
return redirect(url_for('show_entries'))
return render_template('login.html', error=error)
@app.route('/logout')
def logout():
session.pop('logged_in', None)
flash('You were logged out')
return redirect(url_for('show_entries'))
if __name__ == '__main__':
app.run()