odoo-survey-addons/survey_template/models/survey_survey.py

from odoo import models, fields, api, _
from odoo.exceptions import UserError


class SurveySurvey(models.Model):
    _inherit = 'survey.survey'

    is_template = fields.Boolean(string="Is a template", default=False, copy=False)

    @api.multi
    def copy_data(self, default=None):
        data = super(SurveySurvey, self).copy_data(default)[0]
        title = isinstance(default, dict) and default.get('title', False) or False
        if title:
            data['title'] = title
        elif _(" (Template)") in data['title']:
            data['title'] = data['title'].replace(_(" (Template)"), "")
        return [data]

    # ACTIONS

    @api.multi
    def create_survey_from_template(self, default=None):
        self.ensure_one()
        if not self.is_template:
            raise UserError(_("You should use the \"Copy\" secondary action to duplicate a non-template survey."))
        return self.copy(default=default)

    @api.multi
    def action_send_survey(self):
        self.ensure_one()
        if self.is_template:
            raise UserError(_("You cannot send a template survey, create a new survey from this template and you'll be able to share it."))
        return super(SurveySurvey, self).action_send_survey()

    # ONCHANGES

    @api.onchange('is_template')
    def onchange_is_template(self):
        if self.title:
            if self.is_template:
                if _("(Template)") not in self.title:
                    self.title = self.title.strip() + _(" (Template)")
            else:
                if _(" (Template)") in self.title:
                    self.title = self.title.replace(_(" (Template)"), "")