old_contents: # -*- coding: utf-8 -*-
  ##############################################################################
  #
  #    Author: Dave Lasley <dave@laslabs.com>
  #    Copyright: 2015 LasLabs, Inc.
  #
  #    This program is free software: you can redistribute it and/or modify
  #    it under the terms of the GNU Affero 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 Affero General Public License for more details.
  #
  #    You should have received a copy of the GNU Affero General Public License
  #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  #
  ##############################################################################
  
  from openerp import fields, models, api
  
  
  class SaleOrder(models.Model):
      _inherit = 'sale.order'
      
      @api.one
      def _compute_patient_ids(self, ):
          patient_ids = self.env['medical.patient']
          for line_id in self.order_line:
              patient_id = line_id.patient_id
              if patient_id not in patient_ids:
                  patient_ids += patient_id
          self.patient_ids = patient_ids 
  
      patient_ids = fields.Many2many(
          string='Patients',
          comodel_name='medical.patient',
          related='order_line.patient_id',
          readonly=True,
      )
      pharmacy_id = fields.Many2one(
          string='Pharmacy',
          comodel_name='medical.pharmacy',
      )
  
      state = fields.Selection(selection_add=[
          ('rx_verify', 'Rx Verification'),
      ])
  
new_contents: # -*- coding: utf-8 -*-
  ##############################################################################
  #
  #    Author: Dave Lasley <dave@laslabs.com>
  #    Copyright: 2015 LasLabs, Inc.
  #
  #    This program is free software: you can redistribute it and/or modify
  #    it under the terms of the GNU Affero 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 Affero General Public License for more details.
  #
  #    You should have received a copy of the GNU Affero General Public License
  #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  #
  ##############################################################################
  
  from openerp import fields, models, api
  
  
  class SaleOrder(models.Model):
      _inherit = 'sale.order'
      
      @api.one
      def _compute_patient_ids(self, ):
          patient_ids = self.env['medical.patient']
          for line_id in self.order_line:
              patient_id = line_id.patient_id
              if patient_id not in patient_ids:
                  patient_ids += patient_id
          self.patient_ids = patient_ids 
  
      patient_ids = fields.Many2many(
          string='Patients',
          comodel_name='medical.patient',
          compute='_compute_patient_ids',
          readonly=True,
      )
      pharmacy_id = fields.Many2one(
          string='Pharmacy',
          comodel_name='medical.pharmacy',
      )
  
      state = fields.Selection(selection_add=[
          ('rx_verify', 'Rx Verification'),
      ])
  
subject: Add compute arg