old_contents: 
  from flask import Blueprint, render_template, request, redirect, url_for
  from app import user_datastore, bcrypt
  from flask.ext.security import login_user, logout_user
  mod_auth = Blueprint('auth', __name__, url_prefix='/auth')
  
  @mod_auth.route('/login', methods=['GET', 'POST'])
  def login():
      if request.method == "GET":
  
          # Return the login form template
          return render_template('mod_auth/login.html')
      else:
          # Get data from the submitted form
          email = request.form['email']
          password = request.form['password']
  
          # Get the user from the database
          user = user_datastore.find_user(email=email)
  
          # Check if user exists
          if user:
              # Check if the given password matches with the one from the database
              if bcrypt.check_password_hash(user['password'], password):
                  # If the password matches log in the user.
                  login_user(user)
                  # Return user to the index page after successful login
                  return redirect(url_for('admin.index'))
              else:
                  # Return an error message
                  error = "Password doesn't match."
                  return render_template('mod_auth/login.html', error=error)
          else:
              error = "Sorry, user doesn't exist."
              return render_template('mod_auth/login.html', error=error)
  
  
  
  #@mod_auth.route('/register', methods=['GET', 'POST'])
  #def register():
      if request.method == "GET":
          # Return the login form template
          return render_template('mod_auth/register.html')
      else:
          # Get data from the submitted form
          form = request.form
          email = form['email']
  
          # Generate a password hash
          password = bcrypt.generate_password_hash(form['password'], rounds=12)
  
          # Check if the email exists in the database and return an error
          if user_datastore.find_user(email=email):
              error = "A user with that e-mail already exists in the database"
              return render_template('mod_auth/register.html', error=error)
          else:
              # Create the user with the given credentials
              user_datastore.create_user(
                  email=email,
                  password = password
              )
  
              # Get the user instance
              user = user_datastore.find_user(email=email)
  
              # Login user
              login_user(user)
  
              # Return to the main index page
              return redirect(url_for('main.index'))
  
  
  @mod_auth.route('/logout', methods=['GET'])
  def logout():
      logout_user()
      return redirect(url_for('map.index'))
  
new_contents: 
  from flask import Blueprint, render_template, request, redirect, url_for
  from app import user_datastore, bcrypt
  from flask.ext.security import login_user, logout_user
  mod_auth = Blueprint('auth', __name__, url_prefix='/auth')
  
  @mod_auth.route('/login', methods=['GET', 'POST'])
  def login():
      if request.method == "GET":
          return redirect(url_for('admin.index'))
  
  
  
  #@mod_auth.route('/register', methods=['GET', 'POST'])
  #def register():
      if request.method == "GET":
          # Return the login form template
          return render_template('mod_auth/register.html')
      else:
          # Get data from the submitted form
          form = request.form
          email = form['email']
  
          # Generate a password hash
          password = bcrypt.generate_password_hash(form['password'], rounds=12)
  
          # Check if the email exists in the database and return an error
          if user_datastore.find_user(email=email):
              error = "A user with that e-mail already exists in the database"
              return render_template('mod_auth/register.html', error=error)
          else:
              # Create the user with the given credentials
              user_datastore.create_user(
                  email=email,
                  password = password
              )
  
              # Get the user instance
              user = user_datastore.find_user(email=email)
  
              # Login user
              login_user(user)
  
              # Return to the main index page
              return redirect(url_for('main.index'))
  
  
  @mod_auth.route('/logout', methods=['GET'])
  def logout():
      logout_user()
      return redirect(url_for('map.index'))
  
subject: Update views.py