Controller to expose Odoo binary data to readable files extensions to be displayed on browsers and executed by urls in web page (Images/Audio/PDFs..etc)

utils.py

# -*- coding: utf-8 -*-
import json
import logging
import base64
from odoo import http, tools, _
from odoo.http import request

_logger = logging.getLogger(__name__)

class UtilsApi(http.Controller):

    @http.route(['/util/image/<string:model_name>/<int:uid>'], type='http', auth='public', website=True,method=['GET'], csrf=False, cors='*')
    def get_image(self, model_name=False, uid=False, **get):
        return self.getFile(model_name, uid, "image", 'image/png')

    @http.route(['/util/audio/<string:model_name>/<int:uid>'], type='http', auth='public', website=True,method=['GET'], csrf=False, cors='*')
    def get_audio(self, model_name=False, uid=False, **get):
        return self.getFile(model_name, uid, "voice", 'audio/aac')

    @http.route(['/util/pdf/<string:model_name>/<string:uuid>'], type='http', auth='public', website=True,method=['GET'], csrf=False, cors='*')
    def get_pdf(self, model_name=False, uuid=False, **get):
        uid = request.env[model_name].sudo().search([('uuid', '=', str(uuid))])
        return self.getFile(model_name, uid.id, "report", 'application/pdf')

    def getFile(self, model_name=False, id=False, field_name = "image", content_type = 'image/png'):
        if not model_name or not id:
            return request.make_response(
                json.dumps({"response": "Fail", "success": False, "message": "model_name or id not provided"}),
                [('Content-Type', 'application/json'), ]
            )
        else :
            data = request.env[model_name].sudo().search([('id', '=', int(id))])
            if data and data[0][field_name]:
                return request.make_response(
                    base64.b64decode(data[0][field_name]),
                    [('Content-Type', content_type),]
                )
            else:
                return request.make_response(
                    json.dumps({"response": "Fail", "success": False, "message": "data not found"}),
                    [('Content-Type', 'application/json'),]
                )

To display the content of a field every route has its default field name you can change it if you want

• Image has the field name 'image'
• Audio has the field name 'voice'
• PDF has the field name 'report'

Example of the Image URL:

• http://localhost:8069/util/image/model_name/record_id
• http://localhost:8069/util/image/res.partner/1

Example of the Audio URL:

• http://localhost:8069/util/audio/model_name/record_id
• http://localhost:8069/util/audio/res.partner/1

Example of the PDF URL:

• http://localhost:8069/util/pdf/model_name/record_id
• http://localhost:8069/util/pdf/res.partner/1

Example of displaying image in html tag on your reports or form views:
<img src="http://localhost:8069/util/image/res.partner/1"/>