How to Send Uploaded File From Django
Past Vitor Freitas
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How to Upload Files With Django
Updated at Nov 2, 2018: Equally suggested by @fapolloner, I've removed the manual file handling. Updated the instance using FileSystemStorage instead. Cheers!
In this tutorial y'all will larn the concepts backside Django file upload and how to handle file upload using model forms. In the end of this post you will observe the source code of the examples I used so you can try and explore.
This tutorial is also available in video format:
The Basics of File Upload With Django
When files are submitted to the server, the file information ends up placed in request.FILES.
It is mandatory for the HTML class to have the aspect enctype="multipart/course-data" set correctly. Otherwise the request.FILES will be empty.
The form must be submitted using the Post method.
Django have proper model fields to handle uploaded files: FileField and ImageField.
The files uploaded to FileField or ImageField are not stored in the database merely in the filesystem.
FileField and ImageField are created every bit a string field in the database (commonly VARCHAR), containing the reference to the actual file.
If you delete a model instance containing FileField or ImageField, Django will not delete the physical file, but but the reference to the file.
The request.FILES is a dictionary-like object. Each key in asking.FILES is the proper noun from the <input type="file" proper noun="" />.
Each value in request.FILES is an UploadedFile case.
You will need to fix MEDIA_URL and MEDIA_ROOT in your projection's settings.py.
MEDIA_URL = '/media/' MEDIA_ROOT = os . path . join ( 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 admission the MEDIA_URL in template you lot must add django.template.context_processors.media to your context_processeors inside the TEMPLATES config.
Elementary File Upload
Post-obit is a minimal file upload instance using FileSystemStorage. Use it just to larn near the flow of the procedure.
simple_upload.html
{% extends 'base.html' %} {% load static %} {% block content %} <form method= "post" enctype= "multipart/form-information" > {% csrf_token %} <input type= "file" name= "myfile" > <button type= "submit" >Upload</push button> </form> {% 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 return from django.conf import settings from django.core.files.storage import FileSystemStorage def simple_upload ( request ): if request . method == 'POST' and request . FILES [ 'myfile' ]: myfile = asking . FILES [ 'myfile' ] fs = FileSystemStorage () filename = fs . save ( myfile . proper noun , myfile ) uploaded_file_url = fs . url ( filename ) return render ( request , 'core/simple_upload.html' , { 'uploaded_file_url' : uploaded_file_url }) render render ( request , 'core/simple_upload.html' ) File Upload With Model Forms
Now, this is a fashion more user-friendly mode. Model forms perform validation, automatically builds the absolute path for the upload, treats filename conflicts and other mutual tasks.
models.py
from django.db import models course Document ( models . Model ): description = models . CharField ( max_length = 255 , blank = True ) certificate = models . FileField ( upload_to = 'documents/' ) uploaded_at = models . DateTimeField ( auto_now_add = Truthful ) forms.py
from django import forms from uploads.cadre.models import Certificate class DocumentForm ( forms . ModelForm ): class Meta : model = Certificate fields = ( 'description' , 'document' , ) views.py
def model_form_upload ( asking ): if request . method == 'POST' : course = DocumentForm ( request . POST , request . FILES ) if form . is_valid (): course . relieve () return redirect ( 'dwelling' ) else : form = DocumentForm () return render ( request , 'core/model_form_upload.html' , { 'form' : form }) model_form_upload.html
{% extends 'base of operations.html' %} {% cake content %} <class method= "post" enctype= "multipart/form-data" > {% csrf_token %} {{ form.as_p }} <push button type= "submit" >Upload</push button> </course> <p><a href= "{% url 'domicile' %}" >Return to home</a></p> {% endblock %} Most the FileField upload_to Parameter
See the example beneath:
certificate = models . FileField ( upload_to = 'documents/' ) Note the upload_to parameter. The files will be automatically uploaded to MEDIA_ROOT/documents/.
It is also possible to do something like:
document = models . FileField ( upload_to = 'documents/ % Y/ % 1000/ % d/' ) A file uploaded today would be uploaded to MEDIA_ROOT/documents/2016/08/01/.
The upload_to tin also be a callable that returns a cord. This callable accepts two parameters, instance and filename.
def user_directory_path ( instance , filename ): # file will be uploaded to MEDIA_ROOT/user_<id>/<filename> render 'user_{0}/{i}' . format ( instance . user . id , filename ) form MyModel ( models . Model ): upload = models . FileField ( upload_to = user_directory_path ) Download the Examples
The code used in this post is available on Github.
git clone https://github.com/sibtc/simple-file-upload.git pip install django python manage.py migrate python manage.py runserver Popular Posts
Source: https://simpleisbetterthancomplex.com/tutorial/2016/08/01/how-to-upload-files-with-django.html
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