Ive been Playing around with django to create an asset management app and have hit a wall on the file upload to model instance behaviour. I am attempting to use the ModelForm class in Forms.py
Basically im pretty certain that form.save() is not writing my uploaded file to disk to update my model instance. Do I have to write a form.save definition into my AssetForm ? or have I missed something else.
Appreciate any help.
My project is built around the Polls tutorial https://docs.djangoproject.com/en/1.8/intro/tutorial01/ and the minimal file upload tutorial at Need a minimal Django file upload example.
Here is my model .py
class Category(models.Model):
category_text = models.CharField(max_length=200)
def __str__(self): # __unicode__ on Python 2
return self.category_text
class Asset(models.Model):
asset_text = models.CharField(max_length=200)
asset_tag = models.CharField(max_length=200)
asset_category = models.ForeignKey(Category)
cert_date = models.DateTimeField('cert published')
def __str__(self): # __unicode__ on Python 2
return self.asset_text
def was_certed_recently(self):
return self.cert_date >= timezone.now() - datetime.timedelta(days=365)
was_certed_recently.admin_order_field = 'cert_date'
was_certed_recently.boolean = True
was_certed_recently.short_description = 'Certified recently?'
docfile = models.FileField(upload_to='documents')
Here is my forms.py
from django import forms
from django.forms import ModelForm
from polls.models import Asset
class AssetForm(ModelForm):
class Meta:
model = Asset
fields = '__all__'
Here is my views.py
# -*- coding: utf-8 -*-
from django.shortcuts import render_to_response
from django.template import RequestContext
from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse
from django.http import HttpResponse
#from django.template import RequestContext, loader
from django.shortcuts import get_object_or_404, render
from django.http import Http404
from polls.models import Asset
from polls.forms import AssetForm
def list(request, asset_id):
# Handle file upload
ID = asset_id
p = get_object_or_404(Asset, pk = asset_id)
if request.method == 'POST':
form = AssetForm(request.POST, request.FILES, instance= p )
if form.is_valid():
form.save()
# Redirect to the document list after POST
return HttpResponseRedirect(reverse('list', args=(p.id,)))
else:
form = AssetForm() # A empty, unbound form
# Load documents for the list page
documents = p
# Render list page with the documents and the form
return render_to_response(
'polls/list.html',
{'documents': documents, 'ID': ID, 'form': form},
context_instance=RequestContext(request )
)
def index(request):
latest_asset_list = Asset.objects.order_by('-cert_date')[:]
context = {'latest_asset_list': latest_asset_list}
return render(request, 'polls/index.html', context)
url.py
from django.conf.urls import url
from . import views
urlpatterns = [
#url(r'^/list/$', 'list', name='list'),
url(r'^$', views.index, name='index'),
# ex: /polls/5/
url(r'^(?P<asset_id>[0-9]+)/$', views.list, name='list'),
# ex: /polls/5/results/
url(r'^(?P<asset_id>[0-9]+)/results/$', views.results, name='results'),
# ex: /polls/5/vote/
url(r'^(?P<asset_id>[0-9]+)/vote/$', views.vote, name='vote'),
]
Finally my list.html template
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Minimal Django File Upload Example</title>
</head>
<body>
<!-- List of uploaded documents -->
{% if documents %}
<ul>
<p>Current Doc.</p>
<li><a href="{{ documents.docfile.url }}">{{ documents.docfile.name }}</a></li>
</ul>
{% else %}
<p>No documents.</p>
{% endif %}
<ul>
{{ ID }}
<!-- Upload form. Note enctype attribute! -->
<form action="{% url 'list' ID %}" method="post" enctype="multipart/form-data">
{% csrf_token %}
<p>{{ form.non_field_errors }}</p>
<p>{{ form.docfile.label_tag }} {{ form.docfile.help_text }}</p>
<p>
{{ form.docfile.errors }}
{{ form.docfile }}
</p>
<p><input type="submit" value="Upload" /></p>
</form>
</body>
</html>
