def ingest_form(request):
"""Display or process the file ingest form. On GET, display the form. On
valid POST, reposit the submitted file in a new digital object.
"""
if request.method == 'POST':
form = IngestForm(request.POST, request.FILES)
if form.is_valid():
# TODO: set label/dc:title based on filename;
# set file mimetype in dc:format
# TODO: file checksum?
repo = Repository(request=request)
fobj = repo.get_object(type=FileObject)
st = (fobj.uriref, relsext.isMemberOfCollection,
URIRef(form.cleaned_data['collection']))
fobj.rels_ext.content.add(st)
fobj.master.content = request.FILES['file']
# pre-populate the object label and dc:title with the uploaded filename
fobj.label = fobj.dc.content.title = request.FILES['file'].name
fobj.save('ingesting user content')
messages.success(request, 'Successfully ingested <a href="%s"><b>%s</b></a>' % \
(reverse('file:view', args=[fobj.pid]), fobj.pid))
return HttpResponseSeeOtherRedirect(reverse('site-index'))
else:
initial_data = {}
# if collection is specified in url parameters, pre-select the
# requested collection on the form via initial data
if 'collection' in request.GET:
initial_data['collection'] = request.GET['collection']
form = IngestForm(initial=initial_data)
return render_to_response('file/ingest.html', {'form': form},
request=request)
def view_metadata(request, pid):
repo = Repository(request=request)
obj = repo.get_object(pid, type=FileObject)
# if the object doesn't exist or user doesn't have sufficient
# permissions to know that it exists, 404
if not obj.exists:
raise Http404
return render_to_response('file/view.html', {'obj': obj}, request=request)
def edit_metadata(request, pid):
"""View to edit the metadata for an existing
:class:`~genrepo.file.models.FileObject` .
On GET, display the form. When valid form data is POSTed, updates
thes object.
"""
status_code = None
repo = Repository(request=request)
# get the object (if pid is not None), or create a new instance
obj = repo.get_object(pid, type=FileObject)
# on GET, instantiate the form with existing object data (if any)
if request.method == 'GET':
form = DublinCoreEditForm(instance=obj.dc.content)
# on POST, create a new collection object, update DC from form
# data (if valid), and save
elif request.method == 'POST':
form = DublinCoreEditForm(request.POST, instance=obj.dc.content)
if form.is_valid():
form.update_instance()
# also use dc:title as object label
obj.label = obj.dc.content.title
try:
result = obj.save('updated metadata')
messages.success(request,
'Successfully updated <a href="%s"><b>%s</b></a>' % \
(reverse('file:view', args=[obj.pid]), obj.pid))
# maybe redirect to file view page when we have one
return HttpResponseSeeOtherRedirect(reverse('site-index'))
except (DigitalObjectSaveFailure, RequestFailed) as rf:
# do we need a different error message for DigitalObjectSaveFailure?
if isinstance(rf, PermissionDenied):
msg = 'You don\'t have permission to modify this object in the repository.'
else:
msg = 'There was an error communicating with the repository.'
messages.error(request,
msg + ' Please contact a site administrator.')
# pass the fedora error code back in the http response
status_code = getattr(rf, 'code', None)
# if form is not valid, fall through and re-render the form with errors
response = render_to_response('file/edit.html', {
'form': form,
'obj': obj
},
request=request)
# if a non-standard status code is set, set it in the response before returning
if status_code is not None:
response.status_code = status_code
return response
def download_file(request, pid):
'''Download the master file datastream associated with a
:class:`~genrepo.file.models.FileObject`'''
repo = Repository(request=request)
# FIXME: what should the default download filename be?
extra_headers = {'Content-Disposition': "attachment; filename=%s" % (pid)}
# use generic raw datastream view from eulcore
return raw_datastream(request,
pid,
FileObject.master.id,
type=FileObject,
repo=repo,
headers=extra_headers)
def view_collection(request, pid):
'''view an existing
:class:`~genrepo.collection.models.CollectionObject` identified by
pid.
'''
repo = Repository(request=request)
obj = repo.get_object(pid, type=CollectionObject)
# if the object does not exist or the current user doesn't have
# permission to see that it exists, 404
if not obj.exists:
raise Http404
return render_to_response('collection/view.html', {'obj': obj},
request=request)
def _create_or_edit_collection(request, pid=None):
"""View to create a new
:class:`~genrepo.collection.models.CollectionObject` or update an
existing one.
On GET, display the form. When valid form data is POSTed, creates
a new collection (if pid is None) or updates an existing
collection.
"""
status_code = None
repo = Repository(request=request)
# get the object (if pid is not None), or create a new instance
obj = repo.get_object(pid, type=CollectionObject)
# on GET, instantiate the form with existing object data (if any)
if request.method == 'GET':
form = CollectionDCEditForm(instance=obj.dc.content)
# on POST, create a new collection object, update DC from form
# data (if valid), and save
elif request.method == 'POST':
form = CollectionDCEditForm(request.POST, instance=obj.dc.content)
if form.is_valid():
form.update_instance()
# also use dc:title as object label
obj.label = obj.dc.content.title
try:
if obj.exists:
action = 'updated'
save_msg = 'updated via genrepo'
else:
action = 'created new'
save_msg = 'ingested via genrepo'
# save message must be specified in order for Fedora
# to generate & store an ingest audit trail event
result = obj.save(save_msg)
messages.success(request,
'Successfully %s collection <a href="%s"><b>%s</b></a>' % \
(action, reverse('collection:edit', args=[obj.pid]), obj.pid))
# maybe redirect to collection view page when we have one
# - and maybe return a 201 Created status code
return HttpResponseSeeOtherRedirect(reverse('site-index'))
except (DigitalObjectSaveFailure, RequestFailed) as rf:
# do we need a different error message for DigitalObjectSaveFailure?
if isinstance(rf, PermissionDenied):
msg = 'You don\'t have permission to create a collection in the repository.'
else:
msg = 'There was an error communicating with the repository.'
messages.error(request,
msg + ' Please contact a site administrator.')
# pass the fedora error code back in the http response
status_code = getattr(rf, 'code', None)
# if form is not valid, fall through and re-render the form with errors
response = render_to_response('collection/edit.html', {
'form': form,
'obj': obj
},
request=request)
# if a non-standard status code is set, set it in the response before returning
if status_code is not None:
response.status_code = status_code
return response
