Sith/core/views/files.py

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2016-08-10 03:48:06 +00:00
# This file contains all the views that concern the page model
from django.shortcuts import render, redirect, get_object_or_404
from django.views.generic import ListView, DetailView
from django.views.generic.edit import UpdateView, CreateView, FormMixin, DeleteView
from django.contrib.auth.decorators import login_required, permission_required
from django.forms.models import modelform_factory
from django.forms import CheckboxSelectMultiple
from django.conf import settings
from django.utils.translation import ugettext as _
from django.http import HttpResponse
from django.core.servers.basehttp import FileWrapper
from django.core.urlresolvers import reverse
from django.core.exceptions import PermissionDenied, ObjectDoesNotExist
from django import forms
import os
from core.models import SithFile
from core.views import CanViewMixin, CanEditMixin, CanEditPropMixin, CanCreateMixin, can_view, not_found
def send_file(request, file_id):
"""
Send a file through Django without loading the whole file into
memory at once. The FileWrapper will turn the file object into an
iterator for chunks of 8KB.
"""
f = SithFile.objects.filter(id=file_id).first()
if f is None or f.is_folder:
return not_found(request)
if not can_view(f, request.user):
raise PermissionDenied
name = f.file.name
with open(settings.MEDIA_ROOT + name, 'rb') as filename:
wrapper = FileWrapper(filename)
response = HttpResponse(wrapper, content_type=f.mime_type)
response['Content-Length'] = os.path.getsize(settings.MEDIA_ROOT + name)
response['Content-Disposition'] = 'inline; filename="%s"' % f.name
return response
class AddFilesForm(forms.Form):
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folder_name = forms.CharField(label=_("Add a new folder"), max_length=30, required=False)
file_field = forms.FileField(widget=forms.ClearableFileInput(attrs={'multiple': True}), label=_("Files"),
required=False)
def process(self, parent, owner, files):
try:
if self.cleaned_data['folder_name'] != "":
folder = SithFile(parent=parent, name=self.cleaned_data['folder_name'], owner=owner)
folder.clean()
folder.save()
except Exception as e:
self.add_error(None, _("Error creating folder %(folder_name)s: %(msg)s") %
{'folder_name': self.cleaned_data['folder_name'], 'msg': str(e.message)})
for f in files:
new_file = SithFile(parent=parent, name=f.name, file=f, owner=owner, is_folder=False,
mime_type=f.content_type, size=f._size)
try:
new_file.clean()
new_file.save()
print(f.__dict__)
except Exception as e:
self.add_error(None, _("Error uploading file %(file_name)s: %(msg)s") %
{'file_name': f, 'msg': str(e.message)})
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class FileListView(ListView):
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template_name = 'core/file_list.jinja'
context_object_name = "file_list"
def get_queryset(self):
return SithFile.objects.filter(parent=None)
def get_context_data(self, **kwargs):
kwargs = super(FileListView, self).get_context_data(**kwargs)
kwargs['popup'] = ""
if self.kwargs['popup']:
kwargs['popup'] = 'popup'
return kwargs
class FileEditView(CanEditMixin, UpdateView):
model = SithFile
pk_url_kwarg = "file_id"
template_name = 'core/file_edit.jinja'
context_object_name = "file"
def get_form_class(self):
fields = ['name']
if self.object.is_file:
fields = ['file'] + fields
return modelform_factory(SithFile, fields=fields)
def get_success_url(self):
if self.kwargs['popup']:
return reverse('core:file_detail', kwargs={'file_id': self.object.id, 'popup': "popup"})
return reverse('core:file_detail', kwargs={'file_id': self.object.id, 'popup': ""})
def get_context_data(self, **kwargs):
kwargs = super(FileEditView, self).get_context_data(**kwargs)
kwargs['popup'] = ""
if self.kwargs['popup']:
kwargs['popup'] = 'popup'
return kwargs
class FileEditPropView(CanEditPropMixin, UpdateView):
model = SithFile
pk_url_kwarg = "file_id"
template_name = 'core/file_edit.jinja'
context_object_name = "file"
fields = ['parent', 'owner', 'edit_groups', 'view_groups']
def get_form(self, form_class=None):
form = super(FileEditPropView, self).get_form(form_class)
form.fields['parent'].queryset = SithFile.objects.filter(is_folder=True)
return form
def get_success_url(self):
return reverse('core:file_detail', kwargs={'file_id': self.object.id, 'popup': self.kwargs['popup'] or ""})
def get_context_data(self, **kwargs):
kwargs = super(FileEditPropView, self).get_context_data(**kwargs)
kwargs['popup'] = ""
if self.kwargs['popup']:
kwargs['popup'] = 'popup'
return kwargs
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class FileView(CanViewMixin, DetailView, FormMixin):
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"""This class handle the upload of new files into a folder"""
model = SithFile
pk_url_kwarg = "file_id"
template_name = 'core/file_detail.jinja'
context_object_name = "file"
form_class = AddFilesForm
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def get(self, request, *args, **kwargs):
self.form = self.get_form()
return super(FileView, self).get(request, *args, **kwargs)
def post(self, request, *args, **kwargs):
self.object = self.get_object()
self.form = self.get_form()
files = request.FILES.getlist('file_field')
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if request.user.is_authenticated() and request.user.can_edit(self.object) and self.form.is_valid():
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self.form.process(parent=self.object, owner=request.user, files=files)
if self.form.is_valid():
return super(FileView, self).form_valid(self.form)
return self.form_invalid(self.form)
def get_success_url(self):
return reverse('core:file_detail', kwargs={'file_id': self.object.id, 'popup': self.kwargs['popup'] or ""})
def get_context_data(self, **kwargs):
kwargs = super(FileView, self).get_context_data(**kwargs)
kwargs['popup'] = ""
kwargs['form'] = self.form
if self.kwargs['popup']:
kwargs['popup'] = 'popup'
return kwargs
class FileDeleteView(CanEditPropMixin, DeleteView):
model = SithFile
pk_url_kwarg = "file_id"
template_name = 'core/file_delete_confirm.jinja'
context_object_name = "file"
def get_success_url(self):
self.object.file.delete() # Doing it here or overloading delete() is the same, so let's do it here
if self.object.parent is None:
return reverse('core:file_list', kwargs={'popup': self.kwargs['popup'] or ""})
return reverse('core:file_detail', kwargs={'file_id': self.object.parent.id, 'popup': self.kwargs['popup'] or ""})
def get_context_data(self, **kwargs):
kwargs = super(FileDeleteView, self).get_context_data(**kwargs)
kwargs['popup'] = ""
if self.kwargs['popup']:
kwargs['popup'] = 'popup'
return kwargs