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"""If there is an open session, store it to current_session_id / current_session_State.
"""
self.session_ids.fetch(["state"])
for pos_config in self:
opened_sessions = pos_config.session_ids.filtered(lambda s: s.state != 'closed')
rescue_sessions = opened_sessions.filtered('rescue')
session = pos_config.session_ids.filtered(lambda s: s.state != 'closed' and not s.rescue)
# sessions ordered by id desc
pos_config.has_active_session = opened_sessions and True or False
pos_config.current_session_id = session and session[0].id or False
pos_config.current_session_state = session and session[0].state or False
pos_config.number_of_rescue_session = len(rescue_sessions)
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