text: from flask import render_template,redirect,url_for,flash,request
  from flask_login import login_user,logout_user,login_required
  from . import auth
  from ..model import User
  from . forms import RegistrationForm,LoginForm
  from .. import db
  from ..email import mail_message
  
  
  @auth.route('/register',methods=["GET","POST"])
  def register():
      '''
      this is a method with form template for user registration
      '''
      form = RegistrationForm()
      if form.validate_on_submit():
          user = User(email=form.email.data,username=form.username.data,password=form.password.data)
          db.session.add(user)
          db.session.commit()
  
          # mail_message("Welcome to Blog","email/welcome_user",user.email,user=user)
          return redirect(url_for('auth.login'))
          title="Register "
      return render_template('auth/register.html',registration_form=form)
  
  @auth.route('/login',methods =["GET","POST"])
  def login():
      '''
      this is a method with form template for user login
      '''
      login_form=LoginForm()
      if login_form.validate_on_submit():
          user=User.query.filter_by(email=login_form.email.data).first()
          if user is not None and user.verify_password(login_form.password.data):
              login_user(user,login_form.remember.data)
              return redirect(request.args.get('next') or url_for('main.index'))
  
              flash('Invalid username or Password')
          
      title="Blog Login"
  
      return render_template('auth/login.html',title=title, login_form = login_form)
  
  @auth.route('/logout')
  @login_required
  def logout():
      logout_user()
      return redirect(url_for("main.login"))
  
  
  
  
  