Initial commit adding document checkout support

apps/checkouts/views.py

@@ -0,0 +1,103 @@
+from __future__ import absolute_import
+
+from django.utils.translation import ugettext_lazy as _
+from django.http import HttpResponseRedirect
+from django.shortcuts import render_to_response, get_object_or_404
+from django.template import RequestContext
+from django.contrib import messages
+from django.core.urlresolvers import reverse
+#from django.utils.html import mark_safe
+from django.conf import settings
+
+from documents.views import document_list
+from documents.models import Document
+from permissions.exceptions import PermissionDenied
+from permissions.models import Permission
+from acls.models import AccessEntry
+
+from .models import DocumentCheckout
+from .permissions import PERMISSION_DOCUMENT_CHECKOUT, PERMISSION_DOCUMENT_CHECKIN
+from .forms import DocumentCheckoutForm
+from .exceptions import DocumentAlreadyCheckedOut
+
+
+def checkout_list(request):
+    return document_list(request, object_list=DocumentCheckout.objects.checked_out(), title=_(u'checked out documents'))
+
+
+def checkout_info(request, document_pk):
+    document = get_object_or_404(Document, pk=document_pk)
+    try:
+        Permission.objects.check_permissions(request.user, [PERMISSION_DOCUMENT_CHECKOUT, PERMISSION_DOCUMENT_CHECKIN])
+    except PermissionDenied:
+        AccessEntry.objects.check_access([PERMISSION_DOCUMENT_CHECKOUT, PERMISSION_DOCUMENT_CHECKIN], request.user, document)
+
+    if document.is_checked_out():
+        content = 'checkedout'
+    else:
+        content = _(u'Document has not been checked out.')
+    #<p>{{ content|safe }}</p>
+    #{% endif %}
+
+    #{% for paragraph in paragraphs %}
+    #<p>{{ paragraph|safe }}</p>#
+        
+    return render_to_response('generic_template.html', {
+        'content': content,
+        'object': document,
+        'title': _(u'Check out details for document: %s') % document
+    }, context_instance=RequestContext(request))    
+
+
+def checkout_document(request, document_pk):
+    document = get_object_or_404(Document, pk=document_pk)
+    try:
+        Permission.objects.check_permissions(request.user, [PERMISSION_DOCUMENT_CHECKOUT])
+    except PermissionDenied:
+        AccessEntry.objects.check_access(PERMISSION_DOCUMENT_CHECKOUT, request.user, document)
+
+    if request.method == 'POST':
+        form = DocumentCheckoutForm(request.POST)
+        if form.is_valid():
+            try:
+                document_checkout = form.save()
+            except DocumentAlreadyCheckedOut:
+                messages.error(request, _(u'Document already checked out.'))
+            except Exception, exc:
+                messages.error(request, _(u'Error trying to check out document; %s') % exc)
+            else:
+                messages.success(request, _(u'Document "%s" checked out successfully.') % document)
+                return HttpResponseRedirect(document_checkout.get_absolute_url())
+    else:
+        form = DocumentCheckoutForm()#document=document, initial={
+            #'new_filename': document.filename})
+
+    return render_to_response('generic_form.html', {
+        'form': form,
+        'object': document,
+        'title': _(u'Check out document: %s') % document
+    }, context_instance=RequestContext(request))    
+
+
+def checkin_document(request, document_pk):
+    document = get_object_or_404(Document, pk=document_pk)
+    try:
+        Permission.objects.check_permissions(request.user, [PERMISSION_DOCUMENT_CHECKIN])
+    except PermissionDenied:
+        AccessEntry.objects.check_access(PERMISSION_DOCUMENT_CHECKIN, request.user, document)
+
+    if request.method == 'POST':
+        try:
+            document.check_in()
+        except DocumentAlreadyCheckedOut:
+            messages.error(request, _(u'Document already checked out.'))
+        except Exception, exc:
+            messages.error(request, _(u'Error trying to check in document; %s') % exc)
+        else:
+            messages.success(request, _(u'Document "%s" checked out successfully.') % document)
+            return HttpResponseRedirect(reverse('checkout_info', args=[document.pk]))
+
+    return render_to_response('generic_form.html', {
+        'object': document,
+        'title': _(u'Check in document: %s') % document
+    }, context_instance=RequestContext(request))