The Virtual Brain Project

Source code for tvb.core.entities.model.model_project

# -*- coding: utf-8 -*-
# TheVirtualBrain-Framework Package. This package holds all Data Management, and 
# Web-UI helpful to run brain-simulations. To use it, you also need do download
# TheVirtualBrain-Scientific Package (for simulators). See content of the
# documentation-folder for more details. See also
# (c) 2012-2017, Baycrest Centre for Geriatric Care ("Baycrest") and others
# This program is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software Foundation,
# either version 3 of the License, or (at your option) any later version.
# This program is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.  See the GNU General Public License for more details.
# You should have received a copy of the GNU General Public License along with this
# program.  If not, see <>.
# When using The Virtual Brain for scientific publications, please cite it as follows:
#   Paula Sanz Leon, Stuart A. Knock, M. Marmaduke Woodman, Lia Domide,
#   Jochen Mersmann, Anthony R. McIntosh, Viktor Jirsa (2013)
#       The Virtual Brain: a simulator of primate brain network dynamics.
#   Frontiers in Neuroinformatics (7:10. doi: 10.3389/fninf.2013.00010)

Here we define entities related to user and project.

.. moduleauthor:: Lia Domide <>
.. moduleauthor:: Bogdan Neacsa <>
.. moduleauthor:: Yann Gordon <yann@tvb.invalid>

import datetime
from sqlalchemy.orm import relationship, backref
from sqlalchemy.ext.associationproxy import association_proxy
from sqlalchemy.orm.collections import attribute_mapped_collection
from sqlalchemy import Boolean, Integer, String, DateTime, Column, ForeignKey, Float
from tvb.core import utils
from tvb.core.entities.exportable import Exportable
from tvb.core.entities.model.model_base import Base
from tvb.basic.logger.builder import get_logger
from tvb.basic.profile import TvbProfile
from tvb.core.entities.transient.structure_entities import DataTypeMetaData

LOG = get_logger(__name__)

#Constants for User Roles.


[docs]class User(Base): """ Contains the users informations. """ __tablename__ = 'USERS' id = Column(Integer, primary_key=True) username = Column(String, unique=True) password = Column(String) email = Column(String, nullable=True) role = Column(String) validated = Column(Boolean) selected_project = Column(Integer) preferences = association_proxy('user_preferences', 'value', creator=lambda k, v: UserPreferences(key=k, value=v)) def __init__(self, login, password, email=None, validated=True, role=ROLE_RESEARCHER): self.username = login self.password = password = email self.validated = validated self.role = role def __repr__(self): return "<USER('%s','%s','%s','%s','%s', %s)>" % (self.username, self.password,, self.validated, self.role, str(self.selected_project)) def is_administrator(self): """Return a boolean, saying if current user has role Administrator""" return self.role == ROLE_ADMINISTRATOR def is_online_help_active(self): """ This method returns True if this user should see online help. """ is_help_active = True if UserPreferences.ONLINE_HELP_ACTIVE in self.preferences: flag_str = self.preferences[UserPreferences.ONLINE_HELP_ACTIVE] is_help_active = utils.string2bool(flag_str) return is_help_active def switch_online_help_state(self): """ This method changes the state of the OnlineHelp Active flag. """ self.preferences[UserPreferences.ONLINE_HELP_ACTIVE] = str(not self.is_online_help_active()) def set_viewers_color_scheme(self, color_scheme): self.preferences[UserPreferences.VIEWERS_COLOR_SCHEME] = color_scheme def get_viewers_color_scheme(self): if UserPreferences.VIEWERS_COLOR_SCHEME not in self.preferences: self.preferences[UserPreferences.VIEWERS_COLOR_SCHEME] = "linear" return self.preferences[UserPreferences.VIEWERS_COLOR_SCHEME] def set_project_structure_grouping(self, first, second): k = UserPreferences.PROJECT_STRUCTURE_GROUPING self.preferences[k] = "%s,%s" % (first, second) def get_project_structure_grouping(self): k = UserPreferences.PROJECT_STRUCTURE_GROUPING if k not in self.preferences: self.preferences[k] = "%s,%s" % (DataTypeMetaData.KEY_STATE, DataTypeMetaData.KEY_SUBJECT) return self.preferences[k].split(',')
[docs]class UserPreferences(Base): """ Contains the user preferences data. """ __tablename__ = 'USER_PREFERENCES' ONLINE_HELP_ACTIVE = "online_help_active" VIEWERS_COLOR_SCHEME = "viewers_color_scheme" PROJECT_STRUCTURE_GROUPING = "project_structure_grouping" fk_user = Column(Integer, ForeignKey(''), primary_key=True) key = Column(String, primary_key=True) value = Column(String) user = relationship(User, backref=backref("user_preferences", cascade="all, delete-orphan", lazy='joined', collection_class=attribute_mapped_collection("key"))) def __repr__(self): return 'UserPreferences: %s - %s' % (self.key, self.value)
[docs]class Project(Base, Exportable): """ Contains the Projects informations and who is the administrator. """ __tablename__ = 'PROJECTS' id = Column(Integer, primary_key=True) name = Column(String, unique=True) description = Column(String) last_updated = Column(DateTime) fk_admin = Column(Integer, ForeignKey('')) gid = Column(String, unique=True) version = Column(Integer) administrator = relationship(User) ### Transient Attributes # todo: remove these as they are used only to transfer info to the templates. Have incorrect values prior to the templating phase. # send the status to the templates differently operations_finished = 0 operations_started = 0 operations_error = 0 operations_canceled = 0 operations_pending = 0 members = [] def __init__(self, name, fk_admin, description=''): = name self.fk_admin = fk_admin self.description = description self.gid = utils.generate_guid() self.version = TvbProfile.current.version.PROJECT_VERSION def refresh_update_date(self): """Mark entity as being changed NOW. (last_update field)""" self.last_updated = def __repr__(self): return "<Project('%s', '%s')>" % (, self.fk_admin) def to_dict(self): """ Overwrite superclass method to add required changes. """ _, base_dict = super(Project, self).to_dict(excludes=['id', 'fk_admin', 'administrator', 'trait']) return self.__class__.__name__, base_dict def from_dict(self, dictionary, user_id): """ Add specific attributes from a input dictionary. """ = dictionary['name'] self.description = dictionary['description'] self.last_updated = self.gid = dictionary['gid'] self.fk_admin = user_id self.version = int(dictionary['version']) return self
[docs]class User_to_Project(Base): """ Multiple Users can be members of a given Project. """ __tablename__ = 'USERS_TO_PROJECTS' id = Column(Integer, primary_key=True) fk_user = Column(Integer, ForeignKey('', ondelete="CASCADE")) fk_project = Column(Integer, ForeignKey('', ondelete="CASCADE")) def __init__(self, user, case): if type(user) == int: self.fk_user = user else: self.fk_user = if type(case) == int: self.fk_project = case else: self.fk_project =