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Initial updates to support document tranformations

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This commit is contained in:
Roberto Rosario
2011-02-13 17:01:51 -04:00
parent 344a613514
commit 65d1e5b176
10 changed files with 154 additions and 15 deletions
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14
apps/documents/__init__.py
View File

@@ -9,7 +9,7 @@ from common.utils import pretty_size
from permissions.api import register_permissions
from models import Document
from models import Document, DocumentTransformation
from staging import StagingFile
from documents.conf import settings as documents_settings
@@ -20,6 +20,7 @@ PERMISSION_DOCUMENT_METADATA_EDIT = 'document_metadata_edit'
PERMISSION_DOCUMENT_VIEW = 'document_view'
PERMISSION_DOCUMENT_DELETE = 'document_delete'
PERMISSION_DOCUMENT_DOWNLOAD = 'document_download'
PERMISSION_DOCUMENT_TRANSFORM = 'document_transform'
register_permissions('documents', [
{'name':PERMISSION_DOCUMENT_CREATE, 'label':_(u'Create document')},
@@ -28,6 +29,7 @@ register_permissions('documents', [
{'name':PERMISSION_DOCUMENT_VIEW, 'label':_(u'View document')},
{'name':PERMISSION_DOCUMENT_DELETE, 'label':_(u'Delete document')},
{'name':PERMISSION_DOCUMENT_DOWNLOAD, 'label':_(u'Download document')},
{'name':PERMISSION_DOCUMENT_TRANSFORM, 'label':_(u'Transform document')},
])
document_list = {'text':_(u'documents list'), 'view':'document_list', 'famfam':'page', 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_VIEW]}}
@@ -41,13 +43,21 @@ document_edit_metadata = {'text':_('edit metadata'), 'view':'document_edit_metad
document_preview = {'text':_('preview'), 'class':'fancybox', 'view':'document_preview', 'args':'object.id', 'famfam':'magnifier', 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_VIEW]}}
document_download = {'text':_('download'), 'view':'document_download', 'args':'object.id', 'famfam':'page_save', 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_DOWNLOAD]}}
document_transformation_list = {'text':_(u'transformations'), 'view':'document_transformation_list', 'args':'object.id', 'famfam':'page_paintbrush', 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_TRANSFORM]}}
document_transformation_delete = {'text':_('delete'), 'view':'document_transformation_delete', 'args':'object.id', 'famfam':'delete'}#, 'permissions':{'namespace':'documents', 'permissions':[PERMISSION_DOCUMENT_TRANSFORM]}}
staging_file_preview = {'text':_('preview'), 'class':'fancybox', 'view':'staging_file_preview', 'args':'object.id', 'famfam':'drive_magnify'}
staging_file_delete = {'text':_('delete'), 'view':'staging_file_delete', 'args':'object.id', 'famfam':'drive_delete'}
register_links(Document, [document_view, document_edit, document_edit_metadata, document_delete, document_download], menu_name='sidebar')
register_links(Document, [document_view, document_edit, document_edit_metadata, document_delete, document_download, document_transformation_list], menu_name='sidebar')
register_links(Document, [document_list, document_create, document_create_multiple, document_create_sibling], menu_name='sidebar')
register_links(['document_list', 'document_create', 'document_create_multiple', 'upload_document_with_type', 'upload_multiple_documents_with_type'], [document_list, document_create, document_create_multiple], menu_name='sidebar')
register_links(DocumentTransformation, [document_transformation_delete])
register_links(StagingFile, [staging_file_preview, staging_file_delete])
register_model_list_columns(Document, [

13
apps/documents/admin.py
View File

@@ -3,7 +3,7 @@ from django.contrib import admin
from models import MetadataType, DocumentType, Document, \
DocumentTypeMetadataType, DocumentMetadata, DocumentTypeFilename, \
MetadataIndex, DocumentMetadataIndex, DocumentPage, MetadataGroup, \
MetadataGroupItem
MetadataGroupItem, DocumentTransformation
class MetadataTypeAdmin(admin.ModelAdmin):
@@ -50,6 +50,7 @@ class DocumentMetadataIndexInline(admin.StackedInline):
allow_add = True
readonly_fields = ('metadata_index', 'filename')
class DocumentPageInline(admin.StackedInline):
model = DocumentPage
extra = 1
@@ -57,8 +58,16 @@ class DocumentPageInline(admin.StackedInline):
allow_add = True
class DocumentTransformationline(admin.StackedInline):
model = DocumentTransformation
extra = 1
classes = ('collapse-open',)
allow_add = True
class DocumentAdmin(admin.ModelAdmin):
inlines = [DocumentMetadataInline, DocumentMetadataIndexInline, DocumentPageInline]
inlines = [DocumentMetadataInline, DocumentMetadataIndexInline,
DocumentTransformationline, DocumentPageInline]
list_display = ('uuid', 'file_filename', 'file_extension')

25
apps/documents/models.py
View File

@@ -14,6 +14,8 @@ from django.db.models import Q
from dynamic_search.api import register
from converter.conf.settings import TRANFORMATION_CHOICES
from documents.conf.settings import AVAILABLE_FUNCTIONS
from documents.conf.settings import AVAILABLE_MODELS
from documents.conf.settings import CHECKSUM_FUNCTION
@@ -411,4 +413,27 @@ class MetadataGroupItem(models.Model):
verbose_name_plural = _(u'metadata group items')
class DocumentTransformation(models.Model):
document = models.ForeignKey(Document, verbose_name=_(u'document'))
order = models.PositiveIntegerField(blank=True, null=True, verbose_name=_(u'order'))
transformation = models.CharField(choices=TRANFORMATION_CHOICES, max_length=128, verbose_name=_(u'transformation'))
arguments = models.TextField(blank=True, null=True, verbose_name=_(u'arguments'), help_text=_(u'Use directories to indentify arguments, example: {\'degrees\':90}'))
def __unicode__(self):
return self.get_transformation_display()
def get_transformation(self):
try:
return self.transformation % eval(self.arguments)
except Exception, e:
raise Exception(e)
class Meta:
ordering = ('order',)
verbose_name = _(u'document transformation')
verbose_name_plural = _(u'document transformations')
register(Document, _(u'document'), ['document_type__name', 'file_mimetype', 'file_filename', 'file_extension', 'documentmetadata__value', 'documentpage__content'])

4
apps/documents/urls.py
View File

@@ -24,6 +24,10 @@ urlpatterns = patterns('documents.views',
url(r'^document/(?P<document_id>\d+)/display/$', 'get_document_image', {'size':DISPLAY_SIZE,'quality':QUALITY_HIGH}, 'document_display'),
url(r'^document/(?P<document_id>\d+)/download/$', 'document_download', (), 'document_download'),
url(r'^document/(?P<document_id>\d+)/create/siblings/$', 'document_create_sibling', {'multiple':False}, 'document_create_sibling'),
url(r'^document/(?P<document_id>\d+)/tranformation/list/$', 'document_transformation_list', (), 'document_transformation_list'),
url(r'^document/tranformation/(?P<document_transformation_id>\d+)/delete/$', 'document_transformation_delete', (), 'document_transformation_delete'),
url(r'^staging_file/(?P<staging_file_id>\w+)/preview/$', 'staging_file_preview', (), 'staging_file_preview'),
url(r'^staging_file/(?P<staging_file_id>\w+)/delete/$', 'staging_file_delete', (), 'staging_file_delete'),

56
apps/documents/views.py
View File

@@ -38,7 +38,8 @@ from documents.conf.settings import GROUP_SHOW_EMPTY
from documents import PERMISSION_DOCUMENT_CREATE, \
PERMISSION_DOCUMENT_CREATE, PERMISSION_DOCUMENT_PROPERTIES_EDIT, \
PERMISSION_DOCUMENT_METADATA_EDIT, PERMISSION_DOCUMENT_VIEW, \
PERMISSION_DOCUMENT_DELETE, PERMISSION_DOCUMENT_DOWNLOAD
PERMISSION_DOCUMENT_DELETE, PERMISSION_DOCUMENT_DOWNLOAD, \
PERMISSION_DOCUMENT_TRANSFORM
from utils import save_metadata, save_metadata_list, decode_metadata_from_url
@@ -435,9 +436,19 @@ def get_document_image(request, document_id, size=PREVIEW_SIZE, quality=QUALITY_
raise Http404(e)
document = get_object_or_404(Document, pk=document_id)
transformation_list = []
for tranformation in document.documenttransformation_set.all():
try:
transformation_list.append(tranformation.get_transformation())
except Exception, e:
if request.user.is_staff:
messages.warning(request, _(u'Transformation %s error: %s' % (tranformation, e)))
else:
pass
tranformation_string = ' '.join(transformation_list)
try:
filepath = in_image_cache(document.checksum, size=size, quality=quality)
filepath = in_image_cache(document.checksum, size=size, quality=quality, extra_options=tranformation_string)
if filepath:
return serve_file(request, File(file=open(filepath, 'r')))
@@ -445,7 +456,7 @@ def get_document_image(request, document_id, size=PREVIEW_SIZE, quality=QUALITY_
document.file.open()
desc = document.file.storage.open(document.file.path)
filepath = from_descriptor_to_tempfile(desc, document.checksum)
output_file = convert(filepath, size=size, format='jpg', quality=quality)
output_file = convert(filepath, size=size, format='jpg', quality=quality, extra_options=tranformation_string)
return serve_file(request, File(file=open(output_file, 'r')), content_type='image/jpeg')
except Exception, e:
if size == THUMBNAIL_SIZE:
@@ -501,3 +512,40 @@ def staging_file_delete(request, staging_file_id):
'next':next,
'previous':previous,
}, context_instance=RequestContext(request))
def document_transformation_list(request, document_id):
permissions = [PERMISSION_DOCUMENT_TRANSFORM]
try:
check_permissions(request.user, 'documents', permissions)
except Unauthorized, e:
raise Http404(e)
document = get_object_or_404(Document, pk=document_id)
return object_list(
request,
queryset=document.documenttransformation_set.all(),
template_name='generic_list.html',
extra_context={
'title':_(u'document transformations'),
},
)
def document_transformation_delete(request, document_transformation_id):
permissions = [PERMISSION_DOCUMENT_TRANSFORM]
try:
check_permissions(request.user, 'documents', permissions)
except Unauthorized, e:
raise Http404(e)
document_transformation = get_object_or_404(DocumentTransformation, pk=document_transformation_id)
return delete_object(request, model=DocumentTransformation, object_id=document_transformation_id,
template_name='generic_confirm.html',
post_delete_redirect=reverse('document_transformation_list'),
extra_context={
'delete_view':True,
'object':document_transformation,
'object_name':_(u'document transformation'),
})