run.py

from flask import Flask, render_template, redirect, json, request, url_for, jsonify
from flask.ext.sqlalchemy import SQLAlchemy
from werkzeug import generate_password_hash, check_password_hash
from flask.ext.login import login_user , logout_user , current_user , login_required, session, flash
import hashlib

app = Flask(__name__)
db = SQLAlchemy(app)

class Users(db.Model):
	__tablename__ = 'tbl_user'
	user_id = db.Column(db.Integer, primary_key = True)
	user_name = db.Column(db.String(150))
	user_username = db.Column(db.String(150))
	user_password = db.Column(db.String(150))

	def hash_pw(self, passwd):
		passwd = hashlib.sha256(passwd.encode()).hexdigest()
		return passwd

@app.route('/')
def index():
	if 'username' in session:
		username = session['username']
		return redirect(url_for('dashBoard'))
	else:
		return render_template('index.html')

@app.route('/dashBoard')
def dashBoard():
	return render_template('dashboard.html')

@app.route('/showLogin')
def showLogin():
	return render_template('login.html')

@app.route('/showRegister')
def showRegister():
	return render_template('register.html')

@app.route('/login', methods=['POST'])
def login():

		_username = request.form['username']
		_password = request.form['password']

		try:
			if Users.query.filter_by(user_name=_username).first() is None:
				return redirect(url_for('showLogin'))
			else:
				
				que = Users.query.filter_by(user_name=_username).first()
				if que.user_password == que.hash_pw(_password):
					session['username'] = _username
				else:
					return redirect(url_for('showLogin'))
				#else:
					#return jsonify({'error':'errorrrrrrrrrrrrr'})

				return redirect(url_for('dashBoard'))
		except Exception as e:
			return jsonify({'message': str(e)})
	#login_user(registered_user, remember = remember_me)


@app.route('/logout')
def logout():
	session.pop('username', None)
	return redirect(url_for('index'))

@app.route('/register', methods=['POST', 'GET'])
def register():
	try:
		if request.method == 'POST':
			_name = request.form['inputName']
			_email = request.form['inputEmail']
			_password = request.form['inputPassword']

			# validate the received values
			if _name and _email and _password:
				
				# All Good, let's call MySQL
				qq = Users()
				_hashed_password = qq.hash_pw(_password)
				usr = Users(user_name=_name, user_username=_email, user_password=_hashed_password)
				try:
					db.session.add(usr)    
					db.session.commit()
					return redirect(url_for('showLogin'))
				except Exception as e:
					return json.dumps({'error':str(e)})
			else:
				return json.dumps({'html':'<span>Enter the required fields</span>'})
		if request.method == 'GET':
			_name = request.form['inputName']
			_email = request.form['inputEmail']
			_password = request.form['inputPassword']

			# validate the received values
			if _name and _email and _password:
				
				# All Good, let's call MySQL
				_hashed_password = generate_password_hash(_password)
				usr = Users(user_name=_name, user_username=_email, user_password=_hashed_password)
				try:
					db.session.add(usr)    
					db.session.commit()
					return redirect(url_for('login'))
				except Exception as e:
					return json.dumps({'error':str(e)})
			else:
				return json.dumps({'html':'<span>Enter the required fields</span>'})
	except Exception as e:
		return json.dumps({'error':str(e)})
		print str(e)

if __name__ == "__main__":
	app.config.from_object('config')
	app.run(port=80)