Django Upload Document Html to Open an Upload Window
By Vitor Freitas
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How to Upload Files With Django
Updated at November ii, 2018: As suggested by @fapolloner, I've removed the manual file handling. Updated the case using FileSystemStorage instead. Thank you!
In this tutorial you volition learn the concepts backside Django file upload and how to handle file upload using model forms. In the stop of this post you volition observe the source lawmaking of the examples I used so you tin endeavour and explore.
This tutorial is also available in video format:
The Nuts of File Upload With Django
When files are submitted to the server, the file data ends up placed in request.FILES.
It is mandatory for the HTML form to accept the aspect enctype="multipart/form-data" prepare correctly. Otherwise the request.FILES will be empty.
The form must exist submitted using the Mail method.
Django have proper model fields to handle uploaded files: FileField and ImageField.
The files uploaded to FileField or ImageField are non stored in the database but in the filesystem.
FileField and ImageField are created as a cord field in the database (unremarkably VARCHAR), containing the reference to the actual file.
If you delete a model instance containing FileField or ImageField, Django will non delete the physical file, but but the reference to the file.
The request.FILES is a dictionary-similar object. Each key in request.FILES is the name from the <input type="file" name="" />.
Each value in request.FILES is an UploadedFile case.
You will demand to set MEDIA_URL and MEDIA_ROOT in your projection's settings.py.
MEDIA_URL = '/media/' MEDIA_ROOT = os . path . bring together ( BASE_DIR , 'media' ) In the development server you may serve the user uploaded files (media) using django.contrib.staticfiles.views.serve() view.
from django.conf import settings from django.conf.urls.static import static urlpatterns = [ # Project url patterns... ] if settings . DEBUG : urlpatterns += static ( settings . MEDIA_URL , document_root = settings . MEDIA_ROOT ) To access the MEDIA_URL in template you must add django.template.context_processors.media to your context_processeors inside the TEMPLATES config.
Unproblematic File Upload
Following is a minimal file upload case using FileSystemStorage. Use information technology but to larn most the flow of the process.
simple_upload.html
{% extends 'base.html' %} {% load static %} {% block content %} <form method= "post" enctype= "multipart/class-information" > {% csrf_token %} <input type= "file" name= "myfile" > <button blazon= "submit" >Upload</button> </grade> {% if uploaded_file_url %} <p>File uploaded at: <a href= "{{ uploaded_file_url }}" >{{ uploaded_file_url }}</a></p> {% endif %} <p><a href= "{% url 'home' %}" >Return to home</a></p> {% endblock %} views.py
from django.shortcuts import render from django.conf import settings from django.cadre.files.storage import FileSystemStorage def simple_upload ( asking ): if asking . method == 'POST' and request . FILES [ 'myfile' ]: myfile = asking . FILES [ 'myfile' ] fs = FileSystemStorage () filename = fs . save ( myfile . name , myfile ) uploaded_file_url = fs . url ( filename ) return render ( request , 'cadre/simple_upload.html' , { 'uploaded_file_url' : uploaded_file_url }) return render ( request , 'core/simple_upload.html' ) File Upload With Model Forms
At present, this is a way more convenient way. Model forms perform validation, automatically builds the accented path for the upload, treats filename conflicts and other common tasks.
models.py
from django.db import models class Document ( models . Model ): description = models . CharField ( max_length = 255 , blank = True ) document = models . FileField ( upload_to = 'documents/' ) uploaded_at = models . DateTimeField ( auto_now_add = True ) forms.py
from django import forms from uploads.core.models import Document class DocumentForm ( forms . ModelForm ): course Meta : model = Certificate fields = ( 'clarification' , 'document' , ) views.py
def model_form_upload ( request ): if request . method == 'POST' : course = DocumentForm ( asking . POST , request . FILES ) if form . is_valid (): grade . save () return redirect ( 'home' ) else : grade = DocumentForm () return return ( request , 'core/model_form_upload.html' , { 'form' : class }) model_form_upload.html
{% extends 'base.html' %} {% block content %} <form method= "post" enctype= "multipart/form-data" > {% csrf_token %} {{ form.as_p }} <button type= "submit" >Upload</push button> </grade> <p><a href= "{% url 'home' %}" >Return to dwelling</a></p> {% endblock %} Near the FileField upload_to Parameter
See the example below:
document = models . FileField ( upload_to = 'documents/' ) Note the upload_to parameter. The files will exist automatically uploaded to MEDIA_ROOT/documents/.
It is also possible to practise something like:
document = models . FileField ( upload_to = 'documents/ % Y/ % grand/ % d/' ) A file uploaded today would be uploaded to MEDIA_ROOT/documents/2016/08/01/.
The upload_to can also be a callable that returns a string. This callable accepts two parameters, instance and filename.
def user_directory_path ( instance , filename ): # file will be uploaded to MEDIA_ROOT/user_<id>/<filename> return 'user_{0}/{one}' . format ( instance . user . id , filename ) grade MyModel ( models . Model ): upload = models . FileField ( upload_to = user_directory_path ) Download the Examples
The code used in this post is bachelor on Github.
git clone https://github.com/sibtc/simple-file-upload.git pip install django python manage.py drift python manage.py runserver Pop Posts
Source: https://simpleisbetterthancomplex.com/tutorial/2016/08/01/how-to-upload-files-with-django.html
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