extensions.py

from flask import current_app
from flask_admin import Admin, AdminIndexView
from flask_admin.contrib.fileadmin.s3 import S3FileAdmin
from flask_admin.contrib.sqla import ModelView
from flask_login import (LoginManager, UserMixin, current_user, login_fresh,
                         login_required, login_user, logout_user)
from flask_mail import Mail
from flask_migrate import Migrate
from flask_sqlalchemy import SQLAlchemy
from flask_wtf import FlaskForm
from flask_wtf.csrf import CSRFProtect, CSRFError
from sqlalchemy import MetaData
from sqlalchemy.exc import IntegrityError, SQLAlchemyError
from werkzeug.exceptions import InternalServerError, NotFound
from wtforms import (EmailField, PasswordField, SelectField, StringField,
                     ValidationError)
from wtforms.validators import InputRequired

metadata = MetaData(
    naming_convention={
    "ix": 'ix_%(column_0_label)s',
    "uq": "uq_%(table_name)s_%(column_0_name)s",
    "ck": "ck_%(table_name)s_%(constraint_name)s",
    "fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
    "pk": "pk_%(table_name)s"
    }
)

db = SQLAlchemy(metadata=metadata)
migrate = Migrate()
login_manager = LoginManager()
crsf = CSRFProtect()
admin = Admin(template_mode='bootstrap4')
mail = Mail()


login_manager.login_view = "auth_bp.login"
login_manager.login_message = "Please login before proceeding..."
login_manager.login_message_category = "info"
login_manager.needs_refresh_message = (u"Session timedout, please re-login")
login_manager.needs_refresh_message_category = "info"


from models.course import Course, CourseView
from models.doc import Document, DocumentView
from models.level import Level, LevelView
from models.moderator import Moderator, ModeratorView, Role, RoleView

admin.add_view(ModeratorView(Moderator, db.session))
admin.add_view(RoleView(Role, db.session))
admin.add_view(CourseView(Course, db.session))
admin.add_view(DocumentView(Document, db.session))
admin.add_view(LevelView(Level, db.session))