def login():
# check whether there already is a logged in user
# if there is, go home, else continue
if current_user.is_authenticated:
return redirect(url_for('main.home'))
# make sure we grab the log in form
form = LoginForm()
# check that the form is valid when the submit button is hit
if form.validate_on_submit():
# if the email isn't in the database the user doesn't exist
user = User.query.filter_by(email=form.email.data).first()
# if the user exists, the hashed passwords need to match
# if the user doesn't exist, tell them that their account was not found
if user and bcrypt.check_password_hash(user.password,
form.password.data):
login_user(user, remember=form.remember.data)
next_page = request.args.get('next')
return redirect(url_for(next_page)) if next_page else redirect(
url_for('main.home'))
else:
flash('Account not found', 'danger')
return render_template("login.html", title="Log In", form=form)
def login():
form = LoginForm()
if form.validate_on_submit():
user = User.query.filter_by(username=form.username.data).first()
if user is None:
redirect(url_for('users.login'))
if user is not None and user.check_password(form.password.data):
login_user(user)
flash('Logged In Successfully!')
next = request.args.get('next')
if next == None or not next[0] == '/':
next = url_for('users.account')
session.pop('_flashes', None)
return redirect(next) if next else redirect(url_for('users.account'))
else:
flash('Login Unsuccessful. Please check username and password.')
return redirect(url_for('users.login'))
return render_template('login.html', form=form, title='mJubeni | Login')
def login():
if current_user.is_authenticated:
return redirect(url_for('main.home'))
form = LoginForm()
if form.validate_on_submit():
user = User.query.filter_by(email=form.email.data).first()
if user and bcrypt.check_password_hash(user.password, form.password.data):
login_user(user, remember=form.remember.data)
next_page = request.args.get('next')
return redirect(next_page) if next_page else redirect(url_for('main.home'))
else:
flash('Login Unsuccessful. Please check email and password', 'danger')
return render_template('login.html', title='Login', form=form)
def login():
if current_user.is_authenticated: #if user is already logged in and they click the link to the login page, they are redirected to the homepage
return redirect(url_for('main.home'))
form = LoginForm()
if form.validate_on_submit():
user = User.query.filter_by(email=form.email.data).first()
if user and bcrypt.check_password_hash(user.password,
form.password.data):
#the user is logged in if their password in database matches the password they entered into the login form
login_user(user, remember=form.remember.data)
next_page = request.args.get('next')
return redirect(next_page) if next_page else (url_for('main.home'))
else:
flash('Login Unsuccessful. Please check email and password',
'danger')
return render_template('login.html', title='Login', form=form)
def login():
form = LoginForm()
if form.validate_on_submit():
user = User.query.filter_by(email=form.email.data).first()
if user and bcrypt.check_password_hash(user.password,
form.password.data):
login_user(user, remember=form.remember.data)
#below lines accesses query param and allows a redirect to the page a user was previously trying to access.
next_page = request.args.get('next')
#ternery conditional
return redirect(next_page) if next_page else redirect(
url_for('main.home'))
else:
flash('Login Unsucessful. Please check email and password.',
'danger')
return render_template('login.html', title='Login', form=form)
def login():
if current_user.is_authenticated:
return redirect(url_for('main.home'))
form = LoginForm()
if form.validate_on_submit():
user = User.query.filter_by(email=form.email.data).first()
if user and bcrypt.check_password_hash(user.password,
form.password.data):
login_user(user, remember=form.remember.data)
next_page = request.args.get('next')
return redirect(next_page) if next_page else redirect(
url_for('main.home'))
# this statement will direct the user to pervious opened page when not loggged
# and direct him to the home page if he just logged in
else:
flash('Login unsuccessfully. Please check email and password',
'danger')
return render_template('login.html', title='Login', form=form)
def login():
if(current_user.is_authenticated):
flash('already logged in')
return redirect(url_for('main.home'))
form = LoginForm()
if form.validate_on_submit():
user = User.query.filter_by(email=form.email.data).first()
if(user and bcrypt.check_password_hash(user.password, form.password.data)):
flash(f'{form.email.data} is logged in!', 'success')
login_user(user, remember=form.remember.data)
next_page = request.args.get('next')
if next_page:
return redirect(next_page)
else:
return redirect(url_for('main.home'))
else:
flash('Login failed. Please check email and/or password', 'danger')
return render_template('login.html', title='Login', form=form)
def login():
if current_user.is_authenticated:
return redirect(url_for('main.home'))
form = LoginForm()
if form.validate_on_submit(
): # validate_on_submit(): This is a shortcut for form.is_submitted() and form.validate()
user = User.query.filter_by(email=form.email.data).first()
if user and bcrypt.check_password_hash(user.password,
form.password.data):
# login_user() Logs a user in. form.remember.data is a True/False value if checked(True) or unchecked(False)
# login_user(): This will return True if the log in attempt succeeds, and False if it fails
login_user(user, remember=form.remember.data)
# after loggging in, access the page you were viewing before you logged in.
next_page = request.args.get('next')
return redirect(next_page) if next_page else redirect(
url_for('main.home'))
else:
flash(f'Login Unsuccessful. Please check email and password!',
'danger')
return render_template('login.html', title='Login', form=form)
def login():
if current_user.is_authenticated:
return redirect(url_for('main.home_page'))
form = LoginForm()
if form.validate_on_submit():
user = User.query.filter_by(email=form.email.data).first()
if user and bcrypt.check_password_hash(user.password, form.password.data):
login_user(user, remember=form.remember.data)
# jump to the attempted page(if any) before logged in
# using get method otherwise it would raise a error when a query with dict key from a dict is not exist
next_page = request.args.get('next')
return redirect(next_page) if next_page else redirect(url_for('main.home_page'))
else: # could remove this unrelated else branch
flash('Login Unsuccessful, Please check email and password', 'danger')
return render_template('login.html', title='Login', form=form)
def login():
if current_user.is_authenticated:
return redirect(url_for('main.home'))
form = LoginForm()
if form.validate_on_submit():
#Take first entry where email in form matches email in database if it exists
user = User.query.filter_by(email=form.email.data).first()
#Check if password and password hash matches
if user and bcrypt.check_password_hash(user.password,
form.password.data):
#Log the user in. Read the docs for flask-login
login_user(user, remember=form.remember.data)
#Optional, adds the capability to return to the page you were trying to visit before a login prompt
next_page = request.args.get('next')
flash('Logged in successfully!', 'success')
return redirect(next_page) if next_page else redirect(
url_for('main.home'))
else:
flash('Login failed. Please check email and password.', 'danger')
return render_template('login.html', form=form, title='Login')
def login():
if current_user.is_authenticated:
flash(f'无效操作：{current_user.username} 你已在登陆状态', 'danger')
return redirect(url_for('main.home'))
form = LoginForm()
rest_password_form = RequestResetPasswordForm() # modal from
if form.validate_on_submit():
user = User.query.filter_by(email=form.email.data).first()
if user and bcrypt.check_password_hash(user.password,
form.password.data):
login_user(user, remember=form.remember.data)
flash(f'登陆成功', 'primary')
# print(dict(request.args)) # 转dict显示
next_page = request.args.get('next')
return redirect(
url_for('users.account')) if next_page else redirect(
url_for('main.home'))
else:
flash(f'登陆失败 ： 邮箱或密码错误', 'danger')
return render_template('login.html',
form=form,
title='登陆',
rest_form=rest_password_form)
def login():
#incase the user is trying to login although he has been authentcated, then route him
#to the home page
if current_user.is_authenticated:
return redirect(url_for('main.home'))
form = LoginForm()
if form.validate_on_submit():
#check if user exists with the email address:
user = User.query.filter_by(email=form.email.data).first()
password_hashed = user.password
if user and bcrypt.check_password_hash(pw_hash=password_hashed,
password=form.password.data):
login_user(user=user, remember=form.remember.data)
nextpage = request.args.get('next')
flash(message=f"Login Successfull for {form.email.data}",
category='success')
return redirect(nextpage) if nextpage else redirect(
url_for('main.home'))
else:
flash(
message="Login Unsuccessful. Please Check Email and Password",
category='danger')
return (redirect(url_for("main.home")))
return render_template('login.html', title='Login', form=form)
def request_reset_password_modal():
# request rest passwrod from with modal
form = LoginForm()
rest_password_form = RequestResetPasswordForm()
# print(rest_password_form.email.data)
user = User.query.filter_by(email=rest_password_form.email.data).first()
if user is None:
flash('不存在这个邮箱', 'danger')
if rest_password_form.validate_on_submit():
user = User.query.filter_by(
email=rest_password_form.email.data).first()
token = user.generate_rest_token()
link = url_for('users.resetpassword_by_token',
token=token,
_external=True) # full path
send_reset_email(user.email, token, link)
flash(f'已发送重置链接到{rest_password_form.email.data}', 'info')
return redirect(url_for('users.login'))
return redirect(url_for('users.login'))
