Django: Getting Started Transcripts
Chapter: Receiving Uploads in Django
Lecture: Server-side filenames
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The concept of the Django admin is you're trusting the people using it because their administrators. When you write your own upload pages,
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you don't have to name the file you create on the user's behalf, whatever it was, the user named it. This is a good thing.
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Typically if you let random people on the internet name things, it can result in strange choices. Google Boaty McBoatface if you don't believe me.
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One way of managing the file overriding problem is to make sure that either the file
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name or the directory the file is in on the server has something in it that is unique to the user. I often use the users ID.
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Their numeric ID, not the user name. That way you can support a user choosing a new user name without having complications.
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The next step is to write a view that allows the uploading of binary data, like image files. This is done using an http post method like all forms.
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It just requires a special HTML form field. The upload view is then responsible for taking the binary data out of the form field
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and writing it to the server. Typically, somewhere under the media route you specified in settings.py.