file_storage | 参照 Telegram Uploading and Downloading Files | File Upload library

I am trying to split one django form to two forms with two different templates. So after googling I found that the solution is using wizard form. Here is my code:

in view.py:

so i have this ajax script to shown the image that the admin send to client but i have problem is that everytime the admin upload new image the script keep doubleing and send image twice for example if the admin upload first image it shown one image and the admin add a new image <-- and here the problem start it double the image that being upload (now it sending the same image twice and so on) how can i fix this? i don't know if my backend is the problem or my ajax script, here is my code and thank you.

my ajax script

I am using the signaturePad and converting the base64 file to blob. From here i upload it onto s3 but when I download the file it's corrupted. I don't have any issues generating and uploading the file but when I downloaded the image from s3 I can not open it on my local drive. What I am I doing wrong?

This is my code

Use-Case: I have to write in some document_1 update in document_2 and delete document_3 and delete file_4 from file_storage using single transaction using Transactions and batched writes. Is it possible? If possible how?

Note: All four async task should be success when complete OR all four task should be failed. If the case is read and write only this Transactions and batched writes documentation can help. But in our case there is file read - upload - delete task too.

When uploading files, django-formtools Form Wizard, needs a place to temporarily store the until the user has completed all steps in the wizard.

The FormTools documentation shows an example of how to upload a file to a local folder on your server. The file_storage setting is required to upload files.

So I'm using the Django Form Wizard to split a simplified PostForm. In one of the steps, visitors can upload different images related to the Post.

Within the done method for the SessionWizardView, I'm saving the instance first and then check for the images within the formset.

However I get the following error message;

save() prohibited to prevent data loss due to unsaved related object

I tried setting the related Post id for the formset but I'm missing something here, formsets are still something I can't really follow.. Any help is appreciated!

I have a file_storage within my azure portal which is roughly like :

How to set image field as optional? I am trying to set image field as optional(None or selected). Image field is None its throwing "MultiValueDictKeyError" when submit the form. I want to make this image field as None. models.py

I have Ubuntu server with libtorrent, python-libtorrent and local pc Win10 with uTorrent.

On Server I want create 1.torrent and start seeding it on server

On PC I want load 1.torrent to uTorrent and download it using DHT

I made script: creation 1.torrent file, add it to DHT.