Adds in blueprints and an application factory

examples/flaskr/flaskr/blueprints/flaskr.py

@@ -0,0 +1,85 @@
+# -*- coding: utf-8 -*-
+"""
+    Flaskr
+    ~~~~~~
+
+    A microblog example application written as Flask tutorial with
+    Flask and sqlite3.
+
+    :copyright: (c) 2015 by Armin Ronacher.
+    :license: BSD, see LICENSE for more details.
+"""
+
+from sqlite3 import dbapi2 as sqlite3
+from flask import Blueprint, request, session, g, redirect, url_for, abort, \
+     render_template, flash, current_app
+
+
+# create our blueprint :)
+bp = Blueprint('flaskr', __name__)
+
+
+def connect_db():
+    """Connects to the specific database."""
+    rv = sqlite3.connect(current_app.config['DATABASE'])
+    rv.row_factory = sqlite3.Row
+    return rv
+
+
+def init_db():
+    """Initializes the database."""
+    db = get_db()
+    with current_app.open_resource('schema.sql', mode='r') as f:
+        db.cursor().executescript(f.read())
+    db.commit()
+
+
+def get_db():
+    """Opens a new database connection if there is none yet for the
+    current application context.
+    """
+    if not hasattr(g, 'sqlite_db'):
+        g.sqlite_db = connect_db()
+    return g.sqlite_db
+
+
+@bp.route('/')
+def show_entries():
+    db = get_db()
+    cur = db.execute('select title, text from entries order by id desc')
+    entries = cur.fetchall()
+    return render_template('show_entries.html', entries=entries)
+
+
+@bp.route('/add', methods=['POST'])
+def add_entry():
+    if not session.get('logged_in'):
+        abort(401)
+    db = get_db()
+    db.execute('insert into entries (title, text) values (?, ?)',
+               [request.form['title'], request.form['text']])
+    db.commit()
+    flash('New entry was successfully posted')
+    return redirect(url_for('flaskr.show_entries'))
+
+
+@bp.route('/login', methods=['GET', 'POST'])
+def login():
+    error = None
+    if request.method == 'POST':
+        if request.form['username'] != current_app.config['USERNAME']:
+            error = 'Invalid username'
+        elif request.form['password'] != current_app.config['PASSWORD']:
+            error = 'Invalid password'
+        else:
+            session['logged_in'] = True
+            flash('You were logged in')
+            return redirect(url_for('flaskr.show_entries'))
+    return render_template('login.html', error=error)
+
+
+@bp.route('/logout')
+def logout():
+    session.pop('logged_in', None)
+    flash('You were logged out')
+    return redirect(url_for('flaskr.show_entries'))