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Binary field on any model with attachment True or False with binary widget or not it is all downloading the file as zip.

How do i download it as the way i first put into it?

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thanks it worked. i need more karma to count the answer so ill just leave it as it is

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Hi,

You have a Binary field (e.g., file upload), and when users download the file, it's always downloaded as a .zip file even if you originally uploaded a PDF, DOCX, XLSX, etc.


To preserve the original file format, you must set the filename in a separate field and bind it to the binary field using the filename attribute in the form view.


1. Define a filename field in your model:



from odoo import models, fields


class MyModel(models.Model):

    _name = 'my.model'


    attachment = fields.Binary(string="File")

    attachment_filename = fields.Char(string="Filename")


2. In the view (form.xml):


<field name="attachment" filename="attachment_filename"/>


This tells Odoo to download the binary content using the value in attachment_filename.


Hope it helps

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Add the download_link widget in XML with a valid filename_field.

Ensure the filename field is populated with the correct extension.

Avoid zippering unless needed for multiple files.

Use standard download actions to retain file integrity.

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