I am using Django and have a template with the following input field:
<input type="file" name="file_upload">
When the form is submitted, I can access the submitted file like this:
request.FILES['file_upload']
Now that I have this file, I want to upload it to my S3 bucket from the Python backend. How can I do this? Thanks!
Related
I want to get some files from the user and after getting the files, I want the user should make a payment after payment is done, an order should be created and the files should be stored against that order in the Database. I know how to create an order and store the files in a database.
I have used Django's sessions to store the string data. But want to store files also. I have used the following code :
In HTML:
<form method="POST" enctype="multipart/form-data">
<input type="file" name="filename">
</form>
In views.py :
if request.method == "POST":
request.session['filename'] = request.FILES['filename']
It throws errors as :
Object of type InMemoryUploadedFile is not JSON serializable
This error been thrown because you're not allowed to put non-serializable objects into the session.
You may encounter this problem by saving it on the server and just save in the session the file name for future usage.
See more:
Python and Django - How to use in memory and temporary files
I have forms.Form in django. In this form there is a forms.FileField. This field is rendered in html as
<input id="id_upload-loaded_file" name="upload-loaded_file" type="file">
I need to add accepted files only with ".zip" extension so that form will be rendered as
<input id="id_upload-loaded_file" name="upload-loaded_file" type="file" accept=".zip">
How can I add accepted file extension attribute in django?
This is how I did it:
zip_file = forms.FileField(label='Select zip file', widget=forms.FileInput(attrs={'accept': '.zip'}))
How to save a file, uploaded from a form to a local directory without using model? Also the form is being posted using ajax, so how do I render the file information from the html file?
Create an HTML form with
<form method="post" enctype="multipart/form-data" action="your_view_name">
<input name="myfile" type="file" />
</form>
Use AJAX to post the file. If you're using jQuery, see this link on how to post stuff
http://api.jquery.com/jquery.post/
In the view, use request.FILES to access the uploaded file. Use whatever Python APIs you have to save the file to the disk.
I am trying to use a Django 1.3 FormWizard to upload a file with 2 steps:
1. Only the FileField
2. If the file was correctly uploaded and valid (after custom validation), offer to give it a name and description.
Following the documentation, I wrote:
class CreateCheckWizard(FormWizard):
def done(self, request, form_list):
return HttpResponseRedirect('/my_checks/')
def get_template(self, step):
return ['create_check_%s.html' % step, 'create_check_1.html']
class CreateCheckForm1(forms.Form):
my_file = forms.FileField()
class CreateCheckForm2(forms.Form):
title = forms.CharField(max_length=255)
I added the multipart/form-data to the FORM tag in the template:
<form enctype="multipart/form-data" action="." method="post">
However, even if I upload a file, I get the error "This field is required."
I guess the form is created omitting the request.FILES field.
How can we change that behaviour to successfully upload files in the FormWizard?
Edit: Looking at Django source code, it indeed create the forms using form(request.POST) instead of form(request.POST, request.FILES) like it should be to handle files.
Any way to upload files without changing the source code?
This isn't possible in the Django 1.3 form wizard. From the Django form wizard docs:
Important limitation: Because the wizard uses HTML hidden fields to store data between pages, you may not include a FileField in any form except the last one
It is possible with the Django 1.4 form wizard (see handling files docs). If you're using Django 1.3, you can install the new form wizard as a separate app.
I looked at this question:
Uploading multiple files with Django
but it did not seem to help as I have issues regarding it:
I don't want to deal with flash sessions using SWF Upload and Uploadify because I need to do uploads that only authenticated users can do.
newforms are for older versions of django, I am using 1.3
Using Django, how can I have this HTML form structure:
<form enctype="multipart/form-data" action="." method="post">
<label for="id_image_1">Image 1</label>
<input type="file" name="image[]" id="id_image_1" />
<label for="id_image_2">Image 2</label>
<input type="file" name="image[]" id="id_image_2" />
</form>
and handle it using a view?
If you have a fixed number of filefields, you could simply define a form with enough filefields, or add filefields programatically in a form's constructor. See the Django docs on File Uploads.
If you want some sort of dynamic functionality (a la gmail's "add another file"), then you could define a formset using a form with a single filefield. Display a single form initially and when you want to add another, use a little javascript to produce the new form and update the formset's management form. There are a number of snippets floating around to help you do this, though they may need some tweaking. See the Django docs on File Uploads and Formsets.
Another option may be to use a custom widget and field, though I have not reviewed or tried this.
On the off-chance you aren't aware, the name="image[]" scheme is PHP specific and has no special meaning in other languages, unless you reimplement it.
newforms is what the current forms were called before 1.0. Furthermore, if you got your form validated, http://docs.djangoproject.com/en/dev/topics/http/file-uploads/, you'll have your files as a list (tuple, probably, but sequence anyway) in request.FILES['image'], so just do:
if request.method == 'POST':
form = UploadFileForm(request.POST, request.FILES)
if form.is_valid():
for f in request.FILES['image']:
handle_uploaded_file(f)
You'll have to write handle_uploaded_file yourself, the URL explains how