Add files via upload

roytuts · web-flow · commit fa17c71f14c8 · 2019-05-07T16:42:09.000+05:30
diff --git a/python-login-logout/app.py b/python-login-logout/app.py
@@ -0,0 +1,4 @@
+from flask import Flask
+
+app = Flask(__name__)
+app.secret_key = "secret key"
diff --git a/python-login-logout/db_config.py b/python-login-logout/db_config.py
@@ -0,0 +1,11 @@
+from app import app
+from flaskext.mysql import MySQL
+
+mysql = MySQL()
+ 
+# MySQL configurations
+app.config['MYSQL_DATABASE_USER'] = 'root'
+app.config['MYSQL_DATABASE_PASSWORD'] = ''
+app.config['MYSQL_DATABASE_DB'] = 'roytuts'
+app.config['MYSQL_DATABASE_HOST'] = 'localhost'
+mysql.init_app(app)
diff --git a/python-login-logout/main.py b/python-login-logout/main.py
@@ -0,0 +1,50 @@
+import pymysql
+from app import app
+from db_config import mysql
+from flask import flash, session, render_template, request, redirect
+from werkzeug import generate_password_hash, check_password_hash
+
+@app.route('/')
+def index():
+	if 'email' in session:
+		username = session['email']
+		return 'Logged in as ' + username + '<br>' + "<b><a href = '/logout'>click here to logout</a></b>"
+	return "You are not logged in <br><a href = '/login'></b>" + "click here to login</b></a>"
+	
+@app.route('/login')
+def login():
+	return render_template('login.html')
+
+@app.route('/submit', methods=['POST'])
+def login_submit():
+	_email = request.form['inputEmail']
+	_password = request.form['inputPassword']
+	# validate the received values
+	if _email and _password and request.method == 'POST':
+		#check user exists			
+		conn = mysql.connect()
+		cursor = conn.cursor()
+		sql = "SELECT * FROM tbl_user WHERE user_email=%s"
+		sql_where = (_email,)
+		cursor.execute(sql, sql_where)
+		row = cursor.fetchone()
+		if row:
+			if check_password_hash(row[3], _password):
+				session['email'] = row[1]
+				cursor.close() 
+				conn.close()
+				return redirect('/')
+			else:
+				flash('Invalid password!')
+				return redirect('/login')
+		else:
+			flash('Invalid email/password!')
+			return redirect('/login')
+		
+@app.route('/logout')
+def logout():
+	session.pop('email', None)
+	return redirect('/')
+
+if __name__ == "__main__":
+    app.run()
diff --git a/python-login-logout/templates/login.html b/python-login-logout/templates/login.html
@@ -0,0 +1,27 @@
+<doctype html>
+<title>User Login - Python Flask</title>
+<h2>Login</h2>
+<p>
+	{% with messages = get_flashed_messages() %}
+	  {% if messages %}
+		<ul class=flashes>
+		{% for message in messages %}
+		  <li>{{ message }}</li>
+		{% endfor %}
+		</ul>
+	  {% endif %}
+	{% endwith %}
+</p>
+<form method="post" action="/submit">
+    <dl>
+		<p>
+			<input name="inputEmail" value="" type="text" placeholder="Email" required>
+		</p>
+		<p>
+			<input name="inputPassword" value="" type="password" placeholder="Password" autocomplete="off" required>
+		</p>
+    </dl>
+    <p>
+		<input type="submit" value="Submit">
+	</p>
+</form>
