def test_init_by_cmodel(self):
# create file and image objects to test initialization
fileobj = self.repo_admin.get_object(type=FileObject)
fileobj.save()
imgobj = self.repo_admin.get_object(type=ImageObject)
imgobj.save()
self.pids.extend([fileobj.pid, imgobj.pid])
# init a new object from file pid - should be a file object
initobj = init_by_cmodel(fileobj.pid)
self.assert_(isinstance(initobj, FileObject))
# since ImageObject extends FileObject, confirm that we didn't get the wrong thing
self.assert_(not isinstance(initobj, ImageObject))
# image pid should be returned as an ImageObject
initobj = init_by_cmodel(imgobj.pid)
self.assert_(isinstance(initobj, ImageObject))
def image_region(request, pid):
# expose djatoka getRegion method for use in seadragon deep zoom functionality
img = init_by_cmodel(pid, request)
# convert svc.param format used by djatoka to param format used by fedora disseminator
params = dict(
(k.replace('svc.', ''), v) for k, v in request.GET.iteritems())
return HttpResponse(img.get_region(params), mimetype='image/jpeg')
def view_metadata(request, pid):
# init the appropriate type (image, file) according to the cmodel
obj = init_by_cmodel(pid, request)
# 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
template = getattr(obj, 'view_template', 'file/view.html')
env = EXTRA_ENV.copy()
env.update(obj=obj)
return render(request, template, env)
def view_metadata(request, pid):
# init the appropriate type (image, file) according to the cmodel
obj = init_by_cmodel(pid, request)
# 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
template = getattr(obj, 'view_template', 'file/view.html')
env = EXTRA_ENV.copy()
env.update(obj=obj)
return render(request, template, env)
def download_file(request, pid):
'''Download the master file datastream associated with a
:class:`~genrepo.file.models.FileObject`'''
repo = Repository(request=request)
obj = init_by_cmodel(pid, request)
# use original or edited filename as download filename
extra_headers = {
'Content-Disposition': "attachment; filename=%s" % obj.master.label
}
# use generic raw datastream view from eulcore
# - use the datastream id and digital object type returned by cmodel init
return raw_datastream(request, pid, obj.master.id, type=obj.__class__,
repo=repo, headers=extra_headers)
def download_file(request, pid):
'''Download the master file datastream associated with a
:class:`~genrepo.file.models.FileObject`'''
repo = Repository(request=request)
obj = init_by_cmodel(pid, request)
# use original or edited filename as download filename
extra_headers = {
'Content-Disposition': "attachment; filename=%s" % obj.master.label
}
# use generic raw datastream view from eulcore
# - use the datastream id and digital object type returned by cmodel init
return raw_datastream(request,
pid,
obj.master.id,
type=obj.__class__,
repo=repo,
headers=extra_headers)
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.
"""
# response status should be 200 unless something goes wrong
status_code = 200
# init the object as the appropriate type
obj = init_by_cmodel(pid, request)
# on GET, instantiate the form with existing object data (if any)
if request.method == 'GET':
# enable_oai should pre-selected if object already has an oai id
initial_data = {'enable_oai': bool(obj.oai_id),
'file_name': obj.master.label}
form = DublinCoreEditForm(instance=obj.dc.content, initial=initial_data)
# 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
# update master datastream label (required, should always be set)
obj.master.label = form.cleaned_data['file_name']
# set or remove oai itemID based on form selection
if 'enable_oai' in form.cleaned_data:
enable_oai = form.cleaned_data['enable_oai']
# FIXME: with ARKs we use ARK for the OAI id; what should we do without?
if enable_oai:
obj.oai_id = 'oai:%s' % obj.uri
else:
obj.oai_id = None
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 (if any) back in the http response
if hasattr(rf, 'code'):
status_code = getattr(rf, 'code')
# if form is not valid, fall through and re-render the form with errors
return render(request, 'file/edit.html', {'form': form, 'obj': obj},
status=status_code)
def image_region(request, pid):
# expose djatoka getRegion method for use in seadragon deep zoom functionality
img = init_by_cmodel(pid, request)
# convert svc.param format used by djatoka to param format used by fedora disseminator
params = dict((k.replace('svc.', ''),v) for k,v in request.GET.iteritems())
return HttpResponse(img.get_region(params), mimetype='image/jpeg')
def image_dzi(request, pid):
# DZI xml image information required by SeaDragon for deepzom
# should be one of the image cmodels
img = init_by_cmodel(pid, request=request)
return HttpResponse(img.deepzoom_info().serialize(pretty=True), mimetype='text/xml')
def preview(request, pid):
# image preview of an object
# currently only supported for image objects
obj = init_by_cmodel(pid, request)
return HttpResponse(obj.get_preview_image(), mimetype='image/jpeg')
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.
"""
# response status should be 200 unless something goes wrong
status_code = 200
# init the object as the appropriate type
obj = init_by_cmodel(pid, request)
# on GET, instantiate the form with existing object data (if any)
if request.method == 'GET':
# enable_oai should pre-selected if object already has an oai id
initial_data = {
'enable_oai': bool(obj.oai_id),
'file_name': obj.master.label
}
form = DublinCoreEditForm(instance=obj.dc.content,
initial=initial_data)
# 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
# update master datastream label (required, should always be set)
obj.master.label = form.cleaned_data['file_name']
# set or remove oai itemID based on form selection
if 'enable_oai' in form.cleaned_data:
enable_oai = form.cleaned_data['enable_oai']
# FIXME: with ARKs we use ARK for the OAI id; what should we do without?
if enable_oai:
obj.oai_id = 'oai:%s' % obj.uri
else:
obj.oai_id = None
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 (if any) back in the http response
if hasattr(rf, 'code'):
status_code = getattr(rf, 'code')
# if form is not valid, fall through and re-render the form with errors
return render(request,
'file/edit.html', {
'form': form,
'obj': obj
},
status=status_code)
def image_dzi(request, pid):
# DZI xml image information required by SeaDragon for deepzom
# should be one of the image cmodels
img = init_by_cmodel(pid, request=request)
return HttpResponse(img.deepzoom_info().serialize(pretty=True),
mimetype='text/xml')
def preview(request, pid):
# image preview of an object
# currently only supported for image objects
obj = init_by_cmodel(pid, request)
return HttpResponse(obj.get_preview_image(), mimetype='image/jpeg')
