Django - How to Uploading File with Example

  2044 views   2 years ago Python

It is generally useful for a web app to be able to upload files (profile picture, songs, pdf, words.....). Let's discuss how to upload files in this chapter.

Uploading an Image
Before starting to play with an image, make sure you have the Python Image Library (PIL) installed. Now to illustrate uploading an image, let's create a profile form, in our myapp/ −

#-*- coding: utf-8 -*-
from django import forms

class ProfileForm(forms.Form):
   name = forms.CharField(max_length = 100)
   picture = forms.ImageFields()

As you can see, the main difference here is just the forms.ImageField. ImageField will make sure the uploaded file is an image. If not, the form validation will fail.

Now let's create a "Profile" model to save our uploaded profile. This is done in myapp/ −

from django.db import models

class Profile(models.Model):
   name = models.CharField(max_length = 50)
   picture = models.ImageField(upload_to = 'pictures')

   class Meta:
      db_table = "profile"

As you can see for the model, the ImageField takes a compulsory argument: upload_to. This represents the place on the hard drive where your images will be saved. Note that the parameter will be added to the MEDIA_ROOT option defined in your file.

Now that we have the Form and the Model, let's create the view, in myapp/ −

#-*- coding: utf-8 -*-
from myapp.forms import ProfileForm
from myapp.models import Profile

def SaveProfile(request):
   saved = False
   if request.method == "POST":
      #Get the posted form
      MyProfileForm = ProfileForm(request.POST, request.FILES)
      if MyProfileForm.is_valid():
         profile = Profile() = MyProfileForm.cleaned_data["name"]
         profile.picture = MyProfileForm.cleaned_data["picture"]
         saved = True
      MyProfileForm = Profileform()
   return render(request, 'saved.html', locals())

The part not to miss is, there is a change when creating a ProfileForm, we added a second parameters: request.FILES. If not passed the form validation will fail, giving a message that says the picture is empty.

Now, we just need the saved.html template and the profile.html template, for the form and the redirection page −

myapp/templates/saved.html −

      {% if saved %}
         <strong>Your profile was saved.</strong>
      {% endif %}
      {% if not saved %}
         <strong>Your profile was not saved.</strong>
      {% endif %}

myapp/templates/profile.html −

      <form name = "form" enctype = "multipart/form-data" 
         action = "{% url "myapp.views.SaveProfile" %}" method = "POST" >{% csrf_token %}
         <div style = "max-width:470px;">
               <input type = "text" style = "margin-left:20%;" 
               placeholder = "Name" name = "name" />
         <div style = "max-width:470px;">
               <input type = "file" style = "margin-left:20%;" 
                  placeholder = "Picture" name = "picture" />
         <div style = "max-width:470px;">
               <button style = "border:0px;background-color:#4285F4; margin-top:8%; 
                  height:35px; width:80%; margin-left:19%;" type = "submit" value = "Login" >

Next, we need our pair of URLs to get started: myapp/

from django.conf.urls import patterns, url
from django.views.generic import TemplateView

urlpatterns = patterns(
   'myapp.views', url(r'^profile/',TemplateView.as_view(
      template_name = 'profile.html')), url(r'^saved/', 'SaveProfile', name = 'saved')

When accessing "/myapp/profile", we will get the following profile.html template rendered −

i hope you like this article.

Author : Harsukh Makwana
Harsukh Makwana

Hi, My name is Harsukh Makwana. i have been work with many programming language like php, python, javascript, node, react, anguler, etc.. since last 5 year. if you have any issue or want me hire then contact me on [email protected]