files.py 8.76 KB
Newer Older
Skia's avatar
Skia committed
1 2
# This file contains all the views that concern the page model
from django.shortcuts import render, redirect, get_object_or_404
Skia's avatar
Skia committed
3
from django.views.generic import ListView, DetailView, TemplateView
Skia's avatar
Skia committed
4
from django.views.generic.edit import UpdateView, CreateView, FormMixin, DeleteView
Skia's avatar
Skia committed
5
from django.views.generic.detail import SingleObjectMixin
Skia's avatar
Skia committed
6 7 8 9 10 11 12 13 14 15 16 17 18
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

Skia's avatar
Skia committed
19
from core.models import SithFile, RealGroup, Notification
Skia's avatar
Skia committed
20 21
from core.views import CanViewMixin, CanEditMixin, CanEditPropMixin, CanCreateMixin, can_view, not_found

Skia's avatar
Skia committed
22
def send_file(request, file_id, file_class=SithFile, file_attr="file"):
Skia's avatar
Skia committed
23 24 25 26 27
    """
    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.
    """
Skia's avatar
Skia committed
28
    f = file_class.objects.filter(id=file_id).first()
Skia's avatar
Skia committed
29
    if f is None or not f.file:
Skia's avatar
Skia committed
30
        return not_found(request)
31 32 33 34 35 36
    from counter.models import Counter
    if not (can_view(f, request.user) or
            ('counter_token' in request.session.keys() and
                request.session['counter_token'] and # check if not null for counters that have no token set
                Counter.objects.filter(token=request.session['counter_token']).exists())
            ):
Skia's avatar
Skia committed
37
        raise PermissionDenied
Skia's avatar
Skia committed
38
    name = f.__getattribute__(file_attr).name
Skia's avatar
Skia committed
39
    with open((settings.MEDIA_ROOT + name).encode('utf-8'), 'rb') as filename:
Skia's avatar
Skia committed
40 41
        wrapper = FileWrapper(filename)
        response = HttpResponse(wrapper, content_type=f.mime_type)
Skia's avatar
Skia committed
42 43
        response['Content-Length'] = os.path.getsize((settings.MEDIA_ROOT + name).encode('utf-8'))
        response['Content-Disposition'] = ('inline; filename="%s"' % f.name).encode('utf-8')
Skia's avatar
Skia committed
44 45
        return response

46
class AddFilesForm(forms.Form):
Skia's avatar
Skia committed
47 48 49 50 51
    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):
Skia's avatar
Skia committed
52
        notif = False
Skia's avatar
Skia committed
53 54 55 56 57
        try:
            if self.cleaned_data['folder_name'] != "":
                folder = SithFile(parent=parent, name=self.cleaned_data['folder_name'], owner=owner)
                folder.clean()
                folder.save()
Skia's avatar
Skia committed
58
                notif = True
Skia's avatar
Skia committed
59 60 61 62 63 64 65 66 67
        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()
Skia's avatar
Skia committed
68
                notif = True
Skia's avatar
Skia committed
69
            except Exception as e:
Skia's avatar
Skia committed
70
                self.add_error(None, _("Error uploading file %(file_name)s: %(msg)s") % {'file_name': f, 'msg': repr(e)})
Skia's avatar
Skia committed
71 72 73 74 75 76
        if notif:
            for u in RealGroup.objects.filter(id=settings.SITH_SAS_ADMIN_GROUP_ID).first().users.all():
                if not u.notifications.filter(type="FILE_MODERATION").exists():
                    Notification(user=u, text=_("New files to be moderated"),
                            url=reverse("core:file_moderation"), type="FILE_MODERATION").save()

Skia's avatar
Skia committed
77

Skia's avatar
Skia committed
78
class FileListView(ListView):
Skia's avatar
Skia committed
79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98
    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):
Skia's avatar
Skia committed
99
        fields = ['name', 'is_moderated']
Skia's avatar
Skia committed
100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137
        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

Skia's avatar
Skia committed
138
class FileView(CanViewMixin, DetailView, FormMixin):
Skia's avatar
Skia committed
139 140 141 142 143
    """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"
144
    form_class = AddFilesForm
Skia's avatar
Skia committed
145 146 147 148 149 150 151 152 153

    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')
Skia's avatar
Skia committed
154
        if request.user.is_authenticated() and request.user.can_edit(self.object) and self.form.is_valid():
Skia's avatar
Skia committed
155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178
            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
Skia's avatar
Skia committed
179 180
        if 'next' in self.request.GET.keys():
            return self.request.GET['next']
Skia's avatar
Skia committed
181 182 183 184 185 186 187 188 189 190 191
        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

Skia's avatar
Skia committed
192 193 194 195 196
class FileModerationView(TemplateView):
    template_name = "core/file_moderation.jinja"

    def get_context_data(self, **kwargs):
        kwargs = super(FileModerationView, self).get_context_data(**kwargs)
Skia's avatar
Skia committed
197
        kwargs['files'] = SithFile.objects.filter(is_moderated=False)[:100]
Skia's avatar
Skia committed
198 199 200 201 202 203 204 205 206 207 208 209 210 211
        return kwargs

class FileModerateView(CanEditPropMixin, SingleObjectMixin):
    model = SithFile
    pk_url_kwarg = "file_id"

    def get(self, request, *args, **kwargs):
        self.object = self.get_object()
        self.object.is_moderated = True
        self.object.save()
        if 'next' in self.request.GET.keys():
            return redirect(self.request.GET['next'])
        return redirect('core:file_moderation')