old_contents: from flask import Flask
  from flask_admin import Admin
  from flask_admin.contrib.sqla import ModelView
  
  # Puppenc
  from app.puppenc import api, db, output_yaml
  from app.classes.models import Class
  from app.nodes.models import Node
  from app.environments.models import Environment
  from app.hostgroups.models import Hostgroup
  
  app = Flask(__name__)
  
  app.secret_key = 'super secret key'
  admin = Admin(app, name='puppenc', template_mode='bootstrap3')
  
  admin.add_view(ModelView(Class, db.session))
  admin.add_view(ModelView(Node, db.session))
  admin.add_view(ModelView(Environment, db.session))
  admin.add_view(ModelView(Hostgroup, db.session))
  
  app.run(port=5001, debug=True)
  
new_contents: from flask import Flask
  from flask_admin import Admin
  from flask_admin.contrib.sqla import ModelView
  from flask_sqlalchemy import SQLAlchemy
  
  # Puppenc
  from app.puppenc import api, db, output_yaml
  from app.classes.models import Class
  from app.nodes.models import Node
  from app.environments.models import Environment
  from app.hostgroups.models import Hostgroup
  
  app = Flask(__name__)
  db = SQLAlchemy(app)
  
  app.config['SECRET_KEY'] = '123456790'
  app.config['SQLALCHEMY_ECHO'] = True
  
  app.config.update(dict(
      PROFILE = False,
      DEBUG = False,
      PREFIX = '/api/v1',
      VERSION = '0.1',
      OBJECTS_PER_PAGE = 10,
      SQLALCHEMY_TRACK_MODIFICATIONS = False,
      DB_NAME = 'puppenc',
      DB_HOST = 'puppenc-mysql',
      DB_USER = 'root',
      DB_PASSWORD = 'puppenc',
  ))
  
  app.config.update(dict(SQLALCHEMY_DATABASE_CONN = 'mysql://' + app.config['DB_USER'] + ':' + app.config['DB_PASSWORD'] + '@' + app.config['DB_HOST']))
  app.config.update(dict(SQLALCHEMY_DATABASE_URI = app.config['SQLALCHEMY_DATABASE_CONN'] + '/' + app.config['DB_NAME']))
  
  
  admin = Admin(app, name='admin_puppenc', template_mode='bootstrap3')
  
  admin.add_view(ModelView(Class, db.session))
  admin.add_view(ModelView(Node, db.session))
  admin.add_view(ModelView(Environment, db.session))
  admin.add_view(ModelView(Hostgroup, db.session))
  
  app.run(port=5001, host='0.0.0.0', debug=True)
  
subject: Fix admin