/
tst_app.py
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/
tst_app.py
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import os
import datetime
from flask import Flask, render_template_string, request
from flask_babelex import Babel
from flask_user import login_required, roles_required, UserManager, UserMixin
ORM_type = 'SQLAlchemy' # SQLAlchemy or MongoEngine
# ORM_type = 'MongoEngine' # SQLAlchemy or MongoEngine
# Use "mongod -dbpath ~/mongodb/data/db" to start the MongoDB deamon
# Setup Flask
app = Flask(__name__)
# Use a Class-based config to avoid needing a 2nd file
# os.getenv() enables configuration through OS environment variables
class ConfigClass(object):
# Flask settings
SECRET_KEY = 'Test with short key' # Less than 32 bytes
# Flask-SQLAlchemy settings
SQLALCHEMY_DATABASE_URI = 'sqlite:///tst_app.sqlite' # File-based SQL database
SQLALCHEMY_TRACK_MODIFICATIONS = False # Avoids SQLAlchemy warning
# Flask-MongoEngine settings
MONGODB_SETTINGS = {
'db': 'tst_app',
'host': 'mongodb://localhost:27017/tst_app'
}
# Flask-Mail settings
MAIL_USERNAME = os.getenv('MAIL_USERNAME', 'email@example.com')
MAIL_PASSWORD = os.getenv('MAIL_PASSWORD', 'password')
MAIL_DEFAULT_SENDER = os.getenv('MAIL_DEFAULT_SENDER', '"TestApp" <noreply@example.com>')
MAIL_SERVER = os.getenv('MAIL_SERVER', 'smtp.gmail.com')
MAIL_PORT = int(os.getenv('MAIL_PORT', '465'))
MAIL_USE_SSL = os.getenv('MAIL_USE_SSL', True)
# Sengrid settings
SENDGRID_API_KEY = 'some-bogus-value'
# Flask-User settings
USER_APP_NAME = 'TestApp'
USER_ENABLE_EMAIL = True
USER_ENABLE_INVITE_USER = True
# Deliberately test with deprecated v0.6 Flask-User settings
USER_ENABLE_LOGIN_WITHOUT_CONFIRM_EMAIL = False
USER_ENABLE_RETYPE_PASSWORD = True
USER_SHOW_USERNAME_EMAIL_DOES_NOT_EXIST = False
USER_PASSWORD_HASH = 'bcrypt'
# Read app config from class
app.config.from_object(__name__+'.ConfigClass')
# Setup Flask-BabelEx
babel = Babel(app)
if ORM_type=='SQLAlchemy':
# Initialize Flask-SQLAlchemy, using SQLALCHEMY_DATABASE_URI setting
from flask_sqlalchemy import SQLAlchemy
db = SQLAlchemy(app)
# Define the User data-model. Make sure to add flask_user UserMixin!!
class User(db.Model, UserMixin):
__tablename__ = 'users'
id = db.Column(db.Integer, primary_key=True)
active = db.Column('is_active', db.Boolean(), nullable=False, server_default='0')
# User authentication information
username = db.Column(db.String(50), nullable=True, unique=True)
email = db.Column(db.String(255, collation='NOCASE'), nullable=True, unique=True)
email_confirmed_at = db.Column(db.DateTime())
password = db.Column(db.String(255), nullable=False, server_default='')
# User information
first_name = db.Column(db.String(100, collation='NOCASE'), nullable=False, server_default='')
last_name = db.Column(db.String(100, collation='NOCASE'), nullable=False, server_default='')
# Relationships
roles = db.relationship('Role', secondary='user_roles',
backref=db.backref('users', lazy='dynamic'))
# Define UserEmail DataModel.
class UserEmail(db.Model):
__tablename__ = 'user_emails'
id = db.Column(db.Integer, primary_key=True)
user_id = db.Column(db.Integer, db.ForeignKey('users.id'))
user = db.relationship('User', uselist=False)
# User email information
email = db.Column(db.String(255), nullable=True, unique=True)
email_confirmed_at = db.Column(db.DateTime())
is_primary = db.Column(db.Boolean(), nullable=False, default=False)
class UserInvitation(db.Model):
__tablename__ = 'user_invitations'
id = db.Column(db.Integer, primary_key=True)
email = db.Column(db.String(255), nullable=False)
# save the user of the invitee
invited_by_user_id = db.Column(db.Integer, db.ForeignKey('users.id'))
invited_by_user = db.relationship('User', uselist=False)
# token used for registration page to identify user registering
token = db.Column(db.String(100), nullable=False, server_default='')
# Define the Role data-model
class Role(db.Model):
__tablename__ = 'roles'
id = db.Column(db.Integer(), primary_key=True)
name = db.Column(db.String(50), unique=True)
# Define the UserRoles data-model
class UserRoles(db.Model):
__tablename__ = 'user_roles'
id = db.Column(db.Integer(), primary_key=True)
user_id = db.Column(db.Integer(), db.ForeignKey('users.id', ondelete='CASCADE'))
role_id = db.Column(db.Integer(), db.ForeignKey('roles.id', ondelete='CASCADE'))
if ORM_type == 'MongoEngine':
# Initialize Flask-MongoEngine, using MONGODB_SETTINGS setting
from flask_mongoengine import MongoEngine
db = MongoEngine(app)
# Define the User document.
# NB: Make sure to add flask_user UserMixin !!!
class User(db.Document, UserMixin):
# User authentication information
username = db.StringField(default='')
email = db.StringField(default='')
password = db.StringField()
email_confirmed_at = db.DateTimeField(default=None)
# User information
first_name = db.StringField(default='')
last_name = db.StringField(default='')
# Relationships
# roles = ListField(StringField(), required=False, default_empty=True)
roles = db.ListField(db.StringField(), default=[])
# Define custom UserManager class
class CustomUserManager(UserManager):
# Install all EmailAdapters to cover their initialization code
def customize(self, app):
from flask_user.email_adapters import SendmailEmailAdapter
from flask_user.email_adapters import SendgridEmailAdapter
from flask_user.email_adapters import SMTPEmailAdapter
email_adapter = SendmailEmailAdapter(app)
email_adapter = SendgridEmailAdapter(app)
email_adapter = SMTPEmailAdapter(app)
def init_app(app, test_config=None): # For automated tests
# Load local_settings.py if file exists # For automated tests
try: app.config.from_object('local_settings')
except ImportError: pass
# Load optional test_config # For automated tests
if test_config:
app.config.update(test_config)
# Setup Flask-User
if ORM_type == 'SQLAlchemy':
RoleClass = Role
user_manager = CustomUserManager(app, db, User, UserInvitationClass=UserInvitation, RoleClass=RoleClass)
else:
RoleClass = None
user_manager = CustomUserManager(app, db, User, RoleClass=RoleClass)
# Test MAIL_DEFAULT_SENDER parser
assert user_manager.USER_EMAIL_SENDER_NAME=='TestApp'
assert user_manager.USER_EMAIL_SENDER_EMAIL=='noreply@example.com'
# Reset database by dropping, then creating all tables
db_manager = user_manager.db_manager
db_manager.drop_all_tables()
db_manager.create_all_tables()
# For debugging purposes
token = user_manager.generate_token('abc', 123, 'xyz')
data_items = user_manager.token_manager.verify_token(token, 3600)
assert data_items is not None
assert data_items[0] == 'abc'
assert data_items[1] == 123
assert data_items[2] == 'xyz'
# Create regular 'member' user
user = db_manager.add_user(username='member', email='member@example.com',
password=user_manager.hash_password('Password1'), email_confirmed_at=datetime.datetime.utcnow())
db_manager.commit()
# Create 'user007' user with 'secret' and 'agent' roles
user = db_manager.add_user(username='user007', email='admin@example.com',
password=user_manager.hash_password('Password1'))
db_manager.add_user_role(user, 'secret')
db_manager.add_user_role(user, 'agent')
db_manager.commit()
# The '/' page is accessible to anyone
@app.route('/')
def home_page():
return render_template_string("""
{% extends "flask_user_layout.html" %}
{% block content %}
<h2>{%trans%}Home Page{%endtrans%}</h2>
<p><a href="{{ url_for('user.login') }}">{%trans%}Sign in{%endtrans%}</a></p>
{% endblock %}
""")
# The '/profile' page requires a logged-in user
@app.route('/user/profile')
@login_required # Use of @login_required decorator
def user_profile_page():
return render_template_string("""
{% extends "flask_user_layout.html" %}
{% block content %}
<h2>{%trans%}Profile Page{%endtrans%}</h2>
<p> {%trans%}Hello{%endtrans%}
{{ current_user.username or current_user.email }},</p>
<p> <a href="{{ url_for('user.change_username') }}">
{%trans%}Change username{%endtrans%}</a></p>
<p> <a href="{{ url_for('user.change_password') }}">
{%trans%}Change password{%endtrans%}</a></p>
<p> <a href="{{ url_for('user.logout') }}?next={{ url_for('user.login') }}">
{%trans%}Sign out{%endtrans%}</a></p>
{% endblock %}
""")
# The '/special' page requires a user that has the 'secret' AND ('sauce' OR 'agent') role.
@app.route('/special')
@roles_required('secret', ['sauce', 'agent']) # Use of @roles_required decorator
def admin_page():
return render_template_string("""
{% extends "flask_user_layout.html" %}
{% block content %}
<h2>{%trans%}Admin Page{%endtrans%}</h2>
{% endblock %}
""")
# For testing only
app.db = db
if ORM_type == 'SQLAlchemy':
app.UserEmailClass = UserEmail
return app
# Start development web server
if __name__=='__main__':
app = init_app(app)
app.run(host='0.0.0.0', port=5555, debug=True)