[Fixed]-Django: File Upload – Attach a file to a specific job id in task manager app

Your view for ‘upload’ is not sending any context variable named ‘item’, so when you try to open the page, item.id is empty and it fails because of this.

<form action="{% url 'upload' item.id %}" method="post" enctype="multipart/form-data">

Note that the argument in the reversematch error is empty. Also I would recommend going through the docs for File Uploading. I’m not sure whether DocumentForm is a ModelForm but you’ll need that or a file upload handler to properly upload your file. They have a decent enough example there.