def installUi(self):
'''Installs the user interface.'''
# Some useful imports
from OFS.Folder import manage_addFolder
from OFS.Image import manage_addImage, manage_addFile
from Products.PythonScripts.PythonScript import PythonScript
from Products.PageTemplates.ZopePageTemplate import \
manage_addPageTemplate
# Delete the existing folder if it existed.
zopeContent = self.app.objectIds()
if 'ui' in zopeContent: self.app.manage_delObjects(['ui'])
manage_addFolder(self.app, 'ui')
# Browse the physical ui folders (the Appy one and an app-specific, if
# the app defines one) and create the corresponding objects in the Zope
# folder. In the case of files having the same name in both folders,
# the one from the app-specific folder is chosen.
j = os.path.join
uiFolders = [j(j(appy.getPath(), 'gen'), 'ui')]
appUi = j(self.config.diskFolder, 'ui')
if os.path.exists(appUi): uiFolders.insert(0, appUi)
for ui in uiFolders:
for root, dirs, files in os.walk(ui):
folderName = root[len(ui):]
# Get the Zope folder that corresponds to this name
zopeFolder = self.app.ui
if folderName:
for name in folderName.strip(os.sep).split(os.sep):
zopeFolder = zopeFolder._getOb(name)
# Create sub-folders at this level
for name in dirs:
if not hasattr(zopeFolder.aq_base, name):
manage_addFolder(zopeFolder, name)
# Create files at this level
for name in files:
zopeName, ext = os.path.splitext(name)
if ext not in ('.pt', '.py'):
# In the ZODB, pages and scripts have their name without
# their extension.
zopeName = name
if hasattr(zopeFolder.aq_base, zopeName): continue
f = file(j(root, name))
if ext in gen.File.imageExts:
manage_addImage(zopeFolder, zopeName, f)
elif ext == '.pt':
manage_addPageTemplate(zopeFolder,zopeName,'',f.read())
elif ext == '.py':
obj = PythonScript(zopeName)
zopeFolder._setObject(zopeName, obj)
zopeFolder._getOb(zopeName).write(f.read())
else:
manage_addFile(zopeFolder, zopeName, f)
f.close()
# Update the home page
if 'index_html' in zopeContent:
self.app.manage_delObjects(['index_html'])
manage_addPageTemplate(self.app, 'index_html', '', homePage)
# Update the error page
if 'standard_error_message' in zopeContent:
self.app.manage_delObjects(['standard_error_message'])
manage_addPageTemplate(self.app, 'standard_error_message', '',errorPage)
def test_image_extension(self):
# Verify that a new image is stored with the correct extension.
path = os.path.join(os.path.dirname(__file__), 'correct.png')
f = open(path, 'rb')
try:
data = f.read()
finally:
f.close()
conn = self.db.open()
try:
app = conn.root()['Application']
manage_addImage(app, 'image', StringIO(data))
transaction.commit()
self.assertEqual(app.image.data, data)
conn2 = self.db.open()
try:
app = conn2.root()['Application']
self.assertEqual(app.image.data, data)
finally:
conn2.close()
dir = self.conn.basepath
names = os.listdir(dir)
self.assert_(('image.png') in names, names)
self.assert_(('image') not in names, names)
finally:
conn.close()
def test_image_extension(self):
# Verify that a new image is stored with the correct extension.
path = os.path.join(os.path.dirname(__file__), 'correct.png')
f = open(path, 'rb')
try:
data = f.read()
finally:
f.close()
conn = self.db.open()
try:
app = conn.root()['Application']
manage_addImage(app, 'image', StringIO(data))
transaction.commit()
self.assertEqual(app.image.data, data)
conn2 = self.db.open()
try:
app = conn2.root()['Application']
self.assertEqual(app.image.data, data)
finally:
conn2.close()
dir = self.conn.basepath
names = os.listdir(dir)
self.assert_(('image.png') in names, names)
self.assert_(('image') not in names, names)
finally:
conn.close()
def installUi(self):
'''Installs the user interface'''
# Some useful imports
from OFS.Folder import manage_addFolder
from OFS.Image import manage_addImage, manage_addFile
# Delete the existing folder if it existed
zopeContent = self.app.objectIds()
for name in ('ui', self.favIcon):
if name in zopeContent: self.app.manage_delObjects([name])
manage_addFolder(self.app, 'ui')
# Browse the physical ui folders (the Appy one and an app-specific, if
# the app defines one) and create the corresponding objects in the Zope
# folder. In the case of files having the same name in both folders,
# the one from the app-specific folder is chosen.
j = os.path.join
uiFolders = [j(j(appy.getPath(), 'gen'), 'ui')]
for uiFolder in self.config.appConfig.uiFolders:
if uiFolder.startswith('..'):
folder = j(os.path.dirname(self.config.diskFolder),uiFolder[3:])
else:
folder = j(self.config.diskFolder, uiFolder)
if os.path.exists(folder):
uiFolders.insert(0, folder)
for ui in uiFolders:
for root, dirs, files in os.walk(ui):
folderName = root[len(ui):]
# Get the Zope folder that corresponds to this name
zopeFolder = self.app.ui
if folderName:
for name in folderName.strip(os.sep).split(os.sep):
zopeFolder = zopeFolder._getOb(name)
# Create sub-folders at this level
for name in dirs:
if not hasattr(zopeFolder.aq_base, name):
manage_addFolder(zopeFolder, name)
# Create files at this level
for name in files:
ext = os.path.splitext(name)[1]
if hasattr(zopeFolder.aq_base, name): continue
f = file(j(root, name))
if name == self.favIcon:
if not hasattr(self.app, name):
# Copy it at the root. Else, IE won't notice it.
manage_addImage(self.app, name, f)
elif ext in gen.File.imageExts:
manage_addImage(zopeFolder, name, f)
else:
manage_addFile(zopeFolder, name, f)
f.close()
# Update home and error pages
from Products.PageTemplates.ZopePageTemplate import \
manage_addPageTemplate
if 'index_html' in zopeContent:
self.app.manage_delObjects(['index_html'])
manage_addPageTemplate(self.app, 'index_html', '', homePage)
if 'standard_error_message' in zopeContent:
self.app.manage_delObjects(['standard_error_message'])
manage_addPageTemplate(self.app, 'standard_error_message', '',
errorPage)
def installUi(self):
'''Installs the user interface.'''
# Some useful imports.
from OFS.Folder import manage_addFolder
from OFS.Image import manage_addImage, manage_addFile
# Delete the existing folder if it existed.
zopeContent = self.app.objectIds()
if 'ui' in zopeContent: self.app.manage_delObjects(['ui'])
manage_addFolder(self.app, 'ui')
# Browse the physical ui folders (the Appy one and an app-specific, if
# the app defines one) and create the corresponding objects in the Zope
# folder. In the case of files having the same name in both folders,
# the one from the app-specific folder is chosen.
j = os.path.join
uiFolders = [j(j(appy.getPath(), 'gen'), 'ui')]
for uiFolder in self.config.appConfig.uiFolders:
if uiFolder.startswith('..'):
folder = j(os.path.dirname(self.config.diskFolder),
uiFolder[3:])
else:
folder = j(self.config.diskFolder, uiFolder)
if os.path.exists(folder):
uiFolders.insert(0, folder)
for ui in uiFolders:
for root, dirs, files in os.walk(ui):
folderName = root[len(ui):]
# Get the Zope folder that corresponds to this name
zopeFolder = self.app.ui
if folderName:
for name in folderName.strip(os.sep).split(os.sep):
zopeFolder = zopeFolder._getOb(name)
# Create sub-folders at this level
for name in dirs:
if not hasattr(zopeFolder.aq_base, name):
manage_addFolder(zopeFolder, name)
# Create files at this level
for name in files:
ext = os.path.splitext(name)[1]
if hasattr(zopeFolder.aq_base, name): continue
f = file(j(root, name))
if name == 'favicon.ico':
if not hasattr(self.app, name):
# Copy it at the root. Else, IE won't notice it.
manage_addImage(self.app, name, f)
elif ext in gen.File.imageExts:
manage_addImage(zopeFolder, name, f)
else:
manage_addFile(zopeFolder, name, f)
f.close()
# Update the home page
if 'index_html' in zopeContent:
self.app.manage_delObjects(['index_html'])
from Products.PageTemplates.ZopePageTemplate import \
manage_addPageTemplate
manage_addPageTemplate(self.app, 'index_html', '', homePage)
# Remove the error page.
if 'standard_error_message' in zopeContent:
self.app.manage_delObjects(['standard_error_message'])
def uploadImage(self, file, REQUEST=None):
"""Upload image to the collection and then return to the referring URL."""
id, title = cookId(None, None, file)
i = 0
storage = self._get_storage()
while storage._getOb(id, None):
i += 1
id = '%s-%u' % (id, i)
manage_addImage(storage, id, file, title)
self._redirectBack(REQUEST)
def upload_file(self, REQUEST):
""" """
temp_folder = self.getSite().temp_folder
file = REQUEST.form.get('upload_file', None)
if file is None:
return None
try:
image = Image.open(file)
except: # Python Imaging Library doesn't recognize it as an image
return None
x, y = image.size
filename = file.filename
image_format = image.format
if not image_format:
_, ext = os.path.splitext(filename)
image_format = ext
# can't leave empty because image.save will crash
if not image_format:
image_format = 'JPEG'
MAX_SIZE = 400
if x >= MAX_SIZE and x >= y:
x, y = MAX_SIZE, y * MAX_SIZE / x
resize = True
elif y >= MAX_SIZE and y >= x:
x, y = x * MAX_SIZE / y, MAX_SIZE
resize = True
else:
resize = False
if resize:
try:
image = image.resize((x, y), Image.ANTIALIAS)
except AttributeError:
image = image.resize((x, y))
image_io = StringIO()
image.save(image_io, image_format, quality=85)
id = make_id(temp_folder, id=filename)
manage_addImage(temp_folder, id, file=image_io.getvalue())
ob = getattr(temp_folder, id)
ob.filename = filename
ob.p_changed = 1
if x > y:
return (ob.absolute_url(), (x-y)/2, 0, y + (x-y)/2, y, resize)
else:
return (ob.absolute_url(), 0, (y-x)/2, x, x + (y-x)/2, resize)
def _admin_save_image(self, picture_id, upload_picture_url,
x1, y1, x2, y2, width, height, def_width, def_height,
container_folder, REQUEST=None, title='',
subtitle=''):
""" """
if width and height:
F_WIDTH = width
F_HEIGHT = height
else:
F_WIDTH = def_width
F_HEIGHT = def_height
temp_folder = self.getSite().temp_folder
upload_picture_url = urllib.unquote(upload_picture_url)
# fetch image from temp folder or from container_folder folder
if upload_picture_url.startswith(temp_folder.absolute_url()):
folder = temp_folder
elif upload_picture_url.startswith(container_folder.absolute_url()):
folder = container_folder
else:
raise ValueError()
# get image
new_picture = upload_picture_url.split('/')[-1]
picture = folder[new_picture]
if not picture_id:
picture_id = new_picture
# crop image
crop_coordinates = (x1, y1, x2, y2)
croped_picture = process_picture(picture, crop_coordinates,
F_WIDTH, F_HEIGHT)
# remove old image if exists
if container_folder.hasObject(picture_id):
container_folder.manage_delObjects([picture_id])
# add image to folder
if title or subtitle:
picture_title = '%s|%s' % (title, subtitle)
else:
picture_title = ''
manage_addImage(container_folder, picture_id, croped_picture,
title=picture_title)
self.setSessionInfoTrans(MESSAGE_SAVEDCHANGES,
date=self.utGetTodayDate())
if REQUEST is not None:
return REQUEST.RESPONSE.redirect(REQUEST['HTTP_REFERER'])
def migrate_to_1_12(db):
""" Convert resources script lib File into PythonScript and Image
"""
libs = db.resources.objectValues('File')
for lib in libs:
lib_id = lib.id()
lib_data = lib.data
content_type = lib.getContentType()
if 'image' in content_type:
db.resources.manage_delObjects(lib_id)
lib_id = manage_addImage(db.resources, lib_id, lib_data)
else:
error_re = re.compile('^## Errors:$', re.MULTILINE)
ps = PythonScript('testing')
try:
lib_data = asUnicode(lib_data)
except UnicodeDecodeError, e:
logger.info("Unknown encoding, skipping: %s" % lib_id)
continue
ps.write(lib_data)
if not error_re.search(ps.read()):
db.resources.manage_delObjects(lib_id)
blank = manage_addPythonScript(db.resources, lib_id)
sc = db.resources._getOb(lib_id)
sc.write(lib_data)
logger.info("Converted to Script: %s" % lib_id)
continue
def uploadImage(self, file, REQUEST=None):
"""
Upload image to the collection and then return to the referring URL.
"""
sha1_hash = sha_hexdigest(file)
for image in self.storage.objectValues('Image'):
if not hasattr(image, 'sha1_hash'):
image.sha1_hash = sha_hexdigest(image)
if sha1_hash == image.sha1_hash:
return image
id, title = cookId(None, None, file)
# first, determine if this is a utf-8 text and not ascii
try:
id.decode('ascii')
except UnicodeError:
id = id.decode('utf-8')
orig_id = id
id = make_id(self.storage, title=title)
id = manage_addImage(self.storage, id, file, title)
if REQUEST:
return REQUEST.RESPONSE.redirect(REQUEST['HTTP_REFERER'])
ob = self.storage._getOb(id)
return ob
def importResourceFromJSON(self, container, id, element):
"""
"""
id = id.encode('utf-8')
resource_type = element['type']
if id in container.objectIds():
container.manage_delObjects([id])
if resource_type == "Page Template":
obj = manage_addPageTemplate(container, id)
obj.title = element['title']
obj.write(element['data'])
elif resource_type == "Script (Python)":
manage_addPythonScript(container, id)
obj = container._getOb(id)
obj.ZPythonScript_setTitle(element['title'])
obj.write(element['data'])
elif resource_type == "Image":
id = manage_addImage(container, id,
element['data'].decode('base64'),
content_type=element['contenttype'])
else:
container.manage_addFile(id)
obj = getattr(container, id)
obj.meta_type = resource_type
obj.title = element['title']
data = element['data'].decode('base64')
obj.update_data(data, content_type=element['contenttype'])
def uploadImage(self, file, REQUEST=None):
"""
Upload image to the collection and then return to the referring URL.
"""
sha1_hash = sha_hexdigest(file)
for image in self.storage.objectValues('Image'):
if not hasattr(image, 'sha1_hash'):
image.sha1_hash = sha_hexdigest(image)
if sha1_hash == image.sha1_hash:
return image
id, title = cookId(None, None, file)
# first, determine if this is a utf-8 text and not ascii
try:
id.decode('ascii')
except UnicodeError:
id = id.decode('utf-8')
orig_id = id
id = make_id(self.storage, title=title)
id = manage_addImage(self.storage, id, file, title)
if REQUEST:
return REQUEST.RESPONSE.redirect(REQUEST['HTTP_REFERER'])
ob = self.storage._getOb(id)
return ob
def migrate_to_1_12(db):
""" Convert resources script lib File into PythonScript and Image
"""
libs = db.resources.objectValues('File')
for lib in libs:
lib_id = lib.id()
lib_data = lib.data
content_type = lib.getContentType()
if 'image' in content_type:
db.resources.manage_delObjects(lib_id)
lib_id = manage_addImage(db.resources, lib_id, lib_data)
else:
error_re = re.compile('^## Errors:$', re.MULTILINE)
ps = PythonScript('testing')
try:
lib_data = asUnicode(lib_data)
except UnicodeDecodeError, e:
logger.info("Unknown encoding, skipping: %s" % lib_id)
continue
ps.write(lib_data)
if not error_re.search(ps.read()):
db.resources.manage_delObjects(lib_id)
ignored = manage_addPythonScript(db.resources, lib_id)
sc = db.resources._getOb(lib_id)
sc.write(lib_data)
logger.info("Converted to Script: %s" % lib_id)
continue
def zope_txt2img(self, id, label, imgformat="PNG", **kw):
"""
Copy this module to your Zope Instance Extensions directory,
and after restarting Zope do create an External Method in ZMI
following the example:
Id - txt2img
Title - Convert text into image
Module Name - txt2img.py
Function Name - zope_txt2img
"""
from OFS.Image import manage_addImage
imgfile = StringIO()
img = txt2img(label, **kw)
img.save(imgfile, imgformat)
manage_addImage(self, id, imgfile)
def zope_txt2img(self, id, label, imgformat="PNG", **kw):
"""
Copy this module to your Zope Instance Extensions directory,
and after restarting Zope do create an External Method in ZMI
following the example:
Id - txt2img
Title - Convert text into image
Module Name - txt2img.py
Function Name - zope_txt2img
"""
from OFS.Image import manage_addImage
imgfile = StringIO()
img = txt2img(label, **kw)
img.save(imgfile, imgformat)
manage_addImage(self, id, imgfile)
def upload_maintopic_temp_image(self, REQUEST):
""" """
temp_folder = self.getSite().temp_folder
file = REQUEST.form.get("upload_file", None)
if file is None:
return json_response({'error': "no file"}, REQUEST.RESPONSE)
id = make_id(temp_folder)
manage_addImage(temp_folder, id, file=file)
ob = getattr(temp_folder, id)
skin = self.getLayoutTool().getCurrentSkin()
image_size = map(int, skin.main_section_image_size.split("x"))
try:
data = crop_image(ob, image_size)
except AssertionError, e:
data = {"error": str(e)}
def upload_maintopic_temp_image(self, REQUEST):
""" """
temp_folder = self.getSite().temp_folder
file = REQUEST.form.get("upload_file", None)
if file is None:
return json_response({'error': "no file"}, REQUEST.RESPONSE)
filename = file.filename
id = make_id(temp_folder, id=filename)
manage_addImage(temp_folder, id, file=file)
ob = getattr(temp_folder, id)
skin = self.getLayoutTool().getCurrentSkin()
image_size = map(int, skin.main_section_image_size.split("x"))
try:
data = crop_image(ob, image_size)
except AssertionError, e:
data = {"error": str(e)}
def process_image_upload(self, file='', REQUEST=None):
"""
Handles the upload of a new image.
@param file: uploaded image
@param REQUEST: I{optional} parameter to do the redirect
"""
if file != '':
if hasattr(file, 'filename'):
if file.filename != '':
pos = max(file.filename.rfind('/'), file.filename.rfind('\\'), file.filename.rfind(':'))+1
id = file.filename[pos:]
ph = file.filename[:pos]
while True:
try:
manage_addImage(self, '', file)
break
except:
rand_id = utils().utGenRandomId(6)
file.filename = '%s%s_%s' % (ph, rand_id , id)
if REQUEST: REQUEST.RESPONSE.redirect('%s/toolbox_html' % self.absolute_url())
def process_image_upload(self, file='', REQUEST=None):
"""
Handles the upload of a new image.
@param file: uploaded image
@param REQUEST: I{optional} parameter to do the redirect
"""
if file != '':
if hasattr(file, 'filename'):
if file.filename != '':
pos = max(file.filename.rfind('/'), file.filename.rfind('\\'), file.filename.rfind(':'))+1
id = file.filename[pos:]
ph = file.filename[:pos]
while True:
try:
manage_addImage(self, '', file)
break
except:
rand_id = utils().utGenRandomId(6)
file.filename = '%s%s_%s' % (ph, rand_id , id)
if REQUEST: REQUEST.RESPONSE.redirect('%s/toolbox_html' % self.absolute_url())
def uploadImage(self, file, REQUEST=None):
"""Upload image to the collection and then return to the referring URL."""
id, title = cookId(None, None, file)
i = 0
while self.storage._getOb(id, None):
i += 1
id = '%s-%u' % (id, i)
id = manage_addImage(self.storage, id, file, title)
if REQUEST:
return REQUEST.RESPONSE.redirect(REQUEST['HTTP_REFERER'])
ob = self.storage._getOb(id)
return ob
def uploadImage(self, file, REQUEST=None):
"""
Upload image to the collection and then return to the referring URL.
"""
sha1_hash = sha_hexdigest(file)
for image in self.storage.objectValues('Image'):
if not hasattr(image, 'sha1_hash'):
image.sha1_hash = sha_hexdigest(image)
if sha1_hash == image.sha1_hash:
return image
id, title = cookId(None, None, file)
orig_id = id
i = 0
while self.storage._getOb(id, None):
i += 1
id = '%s-%u' % (orig_id, i)
id = manage_addImage(self.storage, id, file, title)
if REQUEST:
return REQUEST.RESPONSE.redirect(REQUEST['HTTP_REFERER'])
ob = self.storage._getOb(id)
return ob
def uploadImage(self, file, REQUEST=None):
"""
Upload image to the collection and then return to the referring URL.
"""
sha1_hash = sha_hexdigest(file)
for image in self.storage.objectValues('Image'):
if not hasattr(image, 'sha1_hash'):
image.sha1_hash = sha_hexdigest(image)
if sha1_hash == image.sha1_hash:
return image
id, title = cookId(None, None, file)
orig_id = id
i = 0
while self.storage._getOb(id, None):
i += 1
id = '%s-%u' % (orig_id, i)
id = manage_addImage(self.storage, id, file, title)
if REQUEST:
return REQUEST.RESPONSE.redirect(REQUEST['HTTP_REFERER'])
ob = self.storage._getOb(id)
return ob
def _admin_save_image(self,
picture_id,
upload_picture_url,
x1,
y1,
x2,
y2,
width,
height,
def_width,
def_height,
container_folder,
REQUEST=None,
title='',
subtitle=''):
""" """
if width and height:
F_WIDTH = width
F_HEIGHT = height
else:
F_WIDTH = def_width
F_HEIGHT = def_height
temp_folder = self.getSite().temp_folder
upload_picture_url = urllib.unquote(upload_picture_url)
# fetch image from temp folder or from container_folder folder
if upload_picture_url.startswith(temp_folder.absolute_url()):
folder = temp_folder
elif upload_picture_url.startswith(container_folder.absolute_url()):
folder = container_folder
else:
raise ValueError()
# get image
new_picture = upload_picture_url.split('/')[-1]
picture = folder[new_picture]
if not picture_id:
picture_id = new_picture
# crop image
crop_coordinates = (x1, y1, x2, y2)
croped_picture = process_picture(picture, crop_coordinates, F_WIDTH,
F_HEIGHT)
# remove old image if exists
if container_folder.hasObject(picture_id):
container_folder.manage_delObjects([picture_id])
# add image to folder
if title or subtitle:
picture_title = '%s|%s' % (title, subtitle)
else:
picture_title = ''
manage_addImage(container_folder,
picture_id,
croped_picture,
title=picture_title)
self.setSessionInfoTrans(MESSAGE_SAVEDCHANGES,
date=self.utGetTodayDate())
if REQUEST is not None:
return REQUEST.RESPONSE.redirect(REQUEST['HTTP_REFERER'])
def admin_savemaintopic_image(self, mainsection, upload_picture_url,
x1, y1, x2, y2, width, height, REQUEST=None):
""" """
if width and height:
F_WIDTH = width
F_HEIGHT = height
else:
F_WIDTH = 962
F_HEIGHT = 143
def process_picture(picture, crop_coordinates):
image_string = picture2stringIO(picture)
img = Image.open(image_string)
fmt = img.format
crop_size = F_WIDTH
if crop_coordinates[2] - crop_coordinates[0] == 0:
x = img.size[0]
y = img.size[1]
if F_HEIGHT * x > F_WIDTH * y:
crop_coordinates = ((x - F_WIDTH * y / F_HEIGHT) / 2, 0, (x + F_WIDTH * y / F_HEIGHT) / 2, y)
else:
crop_coordinates = (0, (y - (F_HEIGHT * x / F_WIDTH)) / 2, x, (y + (F_HEIGHT * x / F_WIDTH)) / 2)
img = img.crop(crop_coordinates)
try:
img = img.resize((F_WIDTH, F_HEIGHT), Image.ANTIALIAS)
except AttributeError:
img = img.resize((F_WIDTH, F_HEIGHT))
newimg = StringIO()
img.save(newimg, fmt, quality=85)
return newimg.getvalue()
main_section_images = self._get_mainsection_images_folder()
temp_folder = self.getSite().temp_folder
upload_picture_url = urllib.unquote(upload_picture_url)
# fetch image from temp folder or from main_section_images folder
if upload_picture_url.startswith(temp_folder.absolute_url()):
folder = temp_folder
elif upload_picture_url.startswith(main_section_images.absolute_url()):
folder = main_section_images
else:
raise ValueError()
# get image
picture_id = upload_picture_url.split('/')[-1]
picture = folder[picture_id]
# crop image
crop_coordinates = (x1, y1, x2, y2)
croped_picture = process_picture(picture, crop_coordinates)
# remove old image if exists
if main_section_images.hasObject(mainsection):
main_section_images.manage_delObjects([mainsection])
# add image to folder
manage_addImage(main_section_images, mainsection, croped_picture)
if REQUEST is not None:
return REQUEST.RESPONSE.redirect(REQUEST['HTTP_REFERER'])
