odoo-survey-addons/survey_input_attachment/models/survey_question.py

# -*- coding: utf-8 -*-
from odoo import models, fields, _

TYPES = [
    ('free_text', _('Multiple Lines Text Box')),
    ('textbox', _('Single Line Text Box')),
    ('numerical_box', _('Numerical Value')),
    ('date', _('Date')),
    ('upload_file', _('Attachment')),
    ('simple_choice', _('Multiple choice: only one answer')),
    ('multiple_choice', _('Multiple choice: multiple answers allowed')),
    ('matrix', _('Matrix')),
]


class SurveyQuestion(models.Model):
    _inherit = 'survey.question'

    # question_attachment = fields.Binary(string="Joined attachment")
    type = fields.Selection(selection=TYPES)