Files
mayan-edms/mayan/apps/metadata/views.py

651 lines
21 KiB
Python

from __future__ import absolute_import, unicode_literals
from django.conf import settings
from django.contrib import messages
from django.core.exceptions import ValidationError
from django.http import HttpResponseRedirect
from django.shortcuts import get_object_or_404
from django.urls import reverse, reverse_lazy
from django.utils.encoding import force_text
from django.utils.http import urlencode
from django.utils.translation import ugettext_lazy as _, ungettext
from acls.models import AccessControlList
from common.generics import (
FormView, MultipleObjectFormActionView, SingleObjectCreateView,
SingleObjectDeleteView, SingleObjectEditView, SingleObjectListView
)
from documents.models import Document, DocumentType
from documents.permissions import (
permission_document_type_edit
)
from .api import save_metadata_list
from .forms import (
DocumentAddMetadataForm, DocumentMetadataFormSet,
DocumentMetadataRemoveFormSet,
DocumentTypeMetadataTypeRelationshipFormSet, MetadataTypeForm
)
from .models import DocumentMetadata, MetadataType
from .permissions import (
permission_metadata_document_add, permission_metadata_document_edit,
permission_metadata_document_remove, permission_metadata_document_view,
permission_metadata_type_create, permission_metadata_type_delete,
permission_metadata_type_edit, permission_metadata_type_view
)
class DocumentMetadataAddView(MultipleObjectFormActionView):
form_class = DocumentAddMetadataForm
model = Document
object_permission = permission_metadata_document_add
success_message = _('Metadata add request performed on %(count)d document')
success_message_plural = _(
'Metadata add request performed on %(count)d documents'
)
def dispatch(self, request, *args, **kwargs):
result = super(
DocumentMetadataAddView, self
).dispatch(request, *args, **kwargs)
queryset = self.get_queryset()
for document in queryset:
document.add_as_recent_document_for_user(request.user)
if len(set([document.document_type.pk for document in queryset])) > 1:
messages.error(
request, _('Selected documents must be of the same type.')
)
return HttpResponseRedirect(self.previous_url)
return result
def form_valid(self, form):
result = super(DocumentMetadataAddView, self).form_valid(form=form)
queryset = self.get_queryset()
if self.action_count == 1:
return HttpResponseRedirect(
reverse('metadata:metadata_edit', args=(queryset.first().pk,)),
)
elif self.action_count > 1:
return HttpResponseRedirect(
'%s?%s' % (
reverse('metadata:metadata_multiple_edit'),
urlencode(
{
'id_list': ','.join(
map(
force_text,
queryset.values_list('pk', flat=True)
)
)
}
)
)
)
return result
def get_extra_context(self):
queryset = self.get_queryset()
result = {
'submit_icon': 'fa fa-plus',
'submit_label': _('Add'),
'title': ungettext(
'Add metadata types to document',
'Add metadata types to documents',
queryset.count()
)
}
if queryset.count() == 1:
result.update(
{
'object': queryset.first(),
'title': _(
'Add metadata types to document: %s'
) % queryset.first()
}
)
return result
def get_form_extra_kwargs(self):
queryset = self.get_queryset()
result = {}
if queryset.count():
result.update(
{
'document_type': queryset.first().document_type,
}
)
if queryset.count() == 1:
result.update(
{
'queryset': MetadataType.objects.get_for_document_type(
document_type=queryset.first().document_type
).exclude(
pk__in=MetadataType.objects.get_for_document(
document=queryset.first()
)
)
}
)
return result
def object_action(self, form, instance):
for metadata_type in form.cleaned_data['metadata_type']:
try:
document_metadata, created = DocumentMetadata.objects.get_or_create(
document=instance,
metadata_type=metadata_type,
defaults={'value': ''}
)
except ValidationError as exception:
messages.error(
self.request,
_(
'Error adding metadata type '
'"%(metadata_type)s" to document: '
'%(document)s; %(exception)s'
) % {
'metadata_type': metadata_type,
'document': instance,
'exception': ', '.join(
getattr(exception, 'messages', exception)
)
}
)
else:
if created:
messages.success(
self.request,
_(
'Metadata type: %(metadata_type)s '
'successfully added to document %(document)s.'
) % {
'metadata_type': metadata_type,
'document': instance
}
)
else:
messages.warning(
self.request, _(
'Metadata type: %(metadata_type)s already '
'present in document %(document)s.'
) % {
'metadata_type': metadata_type,
'document': instance
}
)
class DocumentMetadataEditView(MultipleObjectFormActionView):
form_class = DocumentMetadataFormSet
model = Document
object_permission = permission_metadata_document_edit
success_message = _(
'Metadata edit request performed on %(count)d document'
)
success_message_plural = _(
'Metadata edit request performed on %(count)d documents'
)
def dispatch(self, request, *args, **kwargs):
result = super(
DocumentMetadataEditView, self
).dispatch(request, *args, **kwargs)
queryset = self.get_queryset()
for document in queryset:
document.add_as_recent_document_for_user(request.user)
if len(set([document.document_type.pk for document in queryset])) > 1:
messages.error(
request, _('Selected documents must be of the same type.')
)
return HttpResponseRedirect(self.previous_url)
return result
def form_valid(self, form):
result = super(DocumentMetadataEditView, self).form_valid(form=form)
queryset = self.get_queryset()
if self.action_count == 1:
return HttpResponseRedirect(
reverse('metadata:metadata_edit', args=(queryset.first().pk,)),
)
elif self.action_count > 1:
return HttpResponseRedirect(
'%s?%s' % (
reverse('metadata:metadata_multiple_edit'),
urlencode(
{
'id_list': ','.join(
map(
force_text, queryset.values_list(
'pk', flat=True
)
)
)
}
)
)
)
return result
def get_extra_context(self):
queryset = self.get_queryset()
result = {
'form_display_mode_table': True,
'submit_icon': 'fa fa-pencil',
'submit_label': _('Edit'),
'title': ungettext(
'Edit document metadata',
'Edit documents metadata',
queryset.count()
)
}
if queryset.count() == 1:
result.update(
{
'object': queryset.first(),
'title': _(
'Edit metadata for document: %s'
) % queryset.first()
}
)
return result
def get_initial(self):
queryset = self.get_queryset()
metadata_dict = {}
initial = []
for document in queryset:
document.add_as_recent_document_for_user(self.request.user)
for document_metadata in document.metadata.all():
metadata_dict.setdefault(
document_metadata.metadata_type, set()
)
if document_metadata.value:
metadata_dict[
document_metadata.metadata_type
].add(document_metadata.value)
for key, value in metadata_dict.items():
initial.append({
'document_type': document.document_type,
'metadata_type': key,
'value': ', '.join(value) if value else '',
})
return initial
def object_action(self, form, instance):
errors = []
for form in form.forms:
if form.cleaned_data['update']:
try:
save_metadata_list([form.cleaned_data], instance)
except Exception as exception:
errors.append(exception)
for error in errors:
if settings.DEBUG:
raise
else:
if isinstance(error, ValidationError):
exception_message = ', '.join(error.messages)
else:
exception_message = force_text(error)
messages.error(
self.request, _(
'Error editing metadata for document: '
'%(document)s; %(exception)s.'
) % {
'document': instance,
'exception': exception_message
}
)
else:
messages.success(
self.request,
_(
'Metadata for document %s edited successfully.'
) % instance
)
class DocumentMetadataListView(SingleObjectListView):
def dispatch(self, request, *args, **kwargs):
AccessControlList.objects.check_access(
permissions=permission_metadata_document_view,
user=self.request.user, obj=self.get_document()
)
return super(DocumentMetadataListView, self).dispatch(
request, *args, **kwargs
)
def get_document(self):
return get_object_or_404(Document, pk=self.kwargs['pk'])
def get_extra_context(self):
document = self.get_document()
return {
'hide_link': True,
'object': document,
'title': _('Metadata for document: %s') % document,
}
def get_object_list(self):
return self.get_document().metadata.all()
class DocumentMetadataRemoveView(MultipleObjectFormActionView):
form_class = DocumentMetadataRemoveFormSet
model = Document
object_permission = permission_metadata_document_remove
success_message = _(
'Metadata remove request performed on %(count)d document'
)
success_message_plural = _(
'Metadata remove request performed on %(count)d documents'
)
def dispatch(self, request, *args, **kwargs):
result = super(
DocumentMetadataRemoveView, self
).dispatch(request, *args, **kwargs)
queryset = self.get_queryset()
for document in queryset:
document.add_as_recent_document_for_user(request.user)
if len(set([document.document_type.pk for document in queryset])) > 1:
messages.error(
request, _('Selected documents must be of the same type.')
)
return HttpResponseRedirect(self.previous_url)
return result
def form_valid(self, form):
result = super(DocumentMetadataRemoveView, self).form_valid(form=form)
queryset = self.get_queryset()
if self.action_count == 1:
return HttpResponseRedirect(
reverse('metadata:metadata_edit', args=(queryset.first().pk,)),
)
elif self.action_count > 1:
return HttpResponseRedirect(
'%s?%s' % (
reverse('metadata:metadata_multiple_edit'),
urlencode(
{
'id_list': ','.join(
map(
force_text,
queryset.values_list('pk', flat=True)
)
)
}
)
)
)
return result
def get_extra_context(self):
queryset = self.get_queryset()
result = {
'form_display_mode_table': True,
'submit_icon': 'fa fa-minus',
'submit_label': _('Remove'),
'title': ungettext(
'Remove metadata types from the document',
'Remove metadata types from the documents',
queryset.count()
)
}
if queryset.count() == 1:
result.update(
{
'object': queryset.first(),
'title': _(
'Remove metadata types from the document: %s'
) % queryset.first()
}
)
return result
def get_initial(self):
queryset = self.get_queryset()
metadata = {}
for document in queryset:
document.add_as_recent_document_for_user(self.request.user)
for document_metadata in document.metadata.all():
# Metadata value cannot be None here, fallback to an empty
# string
value = document_metadata.value or ''
if document_metadata.metadata_type in metadata:
if value not in metadata[document_metadata.metadata_type]:
metadata[document_metadata.metadata_type].append(value)
else:
metadata[document_metadata.metadata_type] = [value] if value else ''
initial = []
for key, value in metadata.items():
initial.append(
{
'document_type': queryset.first().document_type,
'metadata_type': key,
'value': ', '.join(value)
}
)
return initial
def object_action(self, form, instance):
for form in form.forms:
if form.cleaned_data['update']:
metadata_type = get_object_or_404(
MetadataType, pk=form.cleaned_data['id']
)
try:
document_metadata = DocumentMetadata.objects.get(
document=instance, metadata_type=metadata_type
)
document_metadata.delete()
messages.success(
self.request,
_(
'Successfully remove metadata type "%(metadata_type)s" from document: %(document)s.'
) % {
'metadata_type': metadata_type,
'document': instance
}
)
except Exception as exception:
messages.error(
self.request,
_(
'Error removing metadata type "%(metadata_type)s" from document: %(document)s; %(exception)s'
) % {
'metadata_type': metadata_type,
'document': instance,
'exception': ', '.join(exception.messages)
}
)
# Setup views
class MetadataTypeCreateView(SingleObjectCreateView):
extra_context = {'title': _('Create metadata type')}
form_class = MetadataTypeForm
model = MetadataType
post_action_redirect = reverse_lazy('metadata:setup_metadata_type_list')
view_permission = permission_metadata_type_create
class MetadataTypeDeleteView(SingleObjectDeleteView):
model = MetadataType
post_action_redirect = reverse_lazy('metadata:setup_metadata_type_list')
view_permission = permission_metadata_type_delete
def get_extra_context(self):
return {
'delete_view': True,
'object': self.get_object(),
'title': _('Delete the metadata type: %s?') % self.get_object(),
}
class MetadataTypeEditView(SingleObjectEditView):
form_class = MetadataTypeForm
model = MetadataType
post_action_redirect = reverse_lazy('metadata:setup_metadata_type_list')
view_permission = permission_metadata_type_edit
def get_extra_context(self):
return {
'object': self.get_object(),
'title': _('Edit metadata type: %s') % self.get_object(),
}
class MetadataTypeListView(SingleObjectListView):
view_permission = permission_metadata_type_view
def get_extra_context(self):
return {
'extra_columns': (
{
'name': _('Internal name'),
'attribute': 'name',
},
),
'hide_link': True,
'title': _('Metadata types'),
}
def get_object_list(self):
return MetadataType.objects.all()
class SetupDocumentTypeMetadataTypes(FormView):
form_class = DocumentTypeMetadataTypeRelationshipFormSet
main_model = 'document_type'
model = DocumentType
submodel = MetadataType
view_permission = permission_document_type_edit
def form_valid(self, form):
try:
for instance in form:
instance.save()
except Exception as exception:
messages.error(
self.request,
_('Error updating relationship; %s') % exception
)
else:
messages.success(
self.request, _('Relationships updated successfully')
)
return super(
SetupDocumentTypeMetadataTypes, self
).form_valid(form=form)
def get_object(self):
return get_object_or_404(self.model, pk=self.kwargs['pk'])
def get_extra_context(self):
return {
'form_display_mode_table': True,
'form_empty_label': _(
'No metadata types available. Add at least one.'
),
'object': self.get_object(),
'title': _(
'Metadata types for document type: %s'
) % self.get_object()
}
def get_initial(self):
obj = self.get_object()
initial = []
for element in self.get_queryset():
initial.append({
'document_type': obj,
'main_model': self.main_model,
'metadata_type': element,
})
return initial
def get_post_action_redirect(self):
return reverse('documents:document_type_list')
def get_queryset(self):
return self.submodel.objects.all()
class SetupMetadataTypesDocumentTypes(SetupDocumentTypeMetadataTypes):
main_model = 'metadata_type'
model = MetadataType
submodel = DocumentType
def get_extra_context(self):
return {
'form_display_mode_table': True,
'object': self.get_object(),
'title': _(
'Document types for metadata type: %s'
) % self.get_object()
}
def get_initial(self):
obj = self.get_object()
initial = []
for element in self.get_queryset():
initial.append({
'document_type': element,
'main_model': self.main_model,
'metadata_type': obj,
})
return initial
def get_post_action_redirect(self):
return reverse('metadata:setup_metadata_type_list')