mercul3s/layout.html

## layout.html
<!DOCTYPE html>
<!-- layout.html -->
<html>
    <head>
    </head>
    <body>
        <div class="container">
            <div id='nav'>
                <a href='{{ url_for('index') }}'><img src="/static/images/monitor-head.png" width='60px' height='31px' alt='monitor-head' id='head-logo' /></a>
                <ul id='nav-bar'>
                <!-- This is where we check for an id in the session, which would mean that a user is logged in, and we
                     only display one of either login or logout depending on the state of the session. This is a very
                     simplified way of checking user login, but works for our purposes. -->
                    {% if 'id' in session %}
                        <li><a href="{{ url_for('logout') }}">Logout</a></li>
                    {% else %}
                        <li><a href="{{ url_for('login_page') }}">Login</a></li>
                    {% endif %}
                    <li><a href="{{ url_for('docs') }}">Docs</a></li>
                    <li><a href="{{ url_for('dashboard') }}">Dashboard</a></li>
                </ul>
            </div>
            {% block body %}{% endblock %}
        </div>
    </body>
</html>

## sessions.py
from flask import session

@app.route('/login', methods=['GET', 'POST'])
def login():
    # this is where your user authentication code would go
    # ie get username, pass, and check them in the database.
    # Sessions are essentially a dictionary, and we can put anything
    # we need in there
    if authenticated == True:
        session['username'] = username
        session['id'] = user_id
        return redirect('some other page')
    else:
        flash(error)
        return redirect('/login')
	<!DOCTYPE html>
	<!-- layout.html -->
	<html>
	<head>
	</head>
	<body>
	<div class="container">
	<div id='nav'>
	<a href='{{ url_for('index') }}'><img src="/static/images/monitor-head.png" width='60px' height='31px' alt='monitor-head' id='head-logo' /></a>
	<ul id='nav-bar'>
	<!-- This is where we check for an id in the session, which would mean that a user is logged in, and we
	only display one of either login or logout depending on the state of the session. This is a very
	simplified way of checking user login, but works for our purposes. -->
	{% if 'id' in session %}
	<li><a href="{{ url_for('logout') }}">Logout</a></li>
	{% else %}
	<li><a href="{{ url_for('login_page') }}">Login</a></li>
	{% endif %}
	<li><a href="{{ url_for('docs') }}">Docs</a></li>
	<li><a href="{{ url_for('dashboard') }}">Dashboard</a></li>
	</ul>
	</div>
	{% block body %}{% endblock %}
	</div>
	</body>
	</html>
	from flask import session

	@app.route('/login', methods=['GET', 'POST'])
	def login():
	# this is where your user authentication code would go
	# ie get username, pass, and check them in the database.
	# Sessions are essentially a dictionary, and we can put anything
	# we need in there
	if authenticated == True:
	session['username'] = username
	session['id'] = user_id
	return redirect('some other page')
	else:
	flash(error)
	return redirect('/login')