def render(self, context):
DEBUG = get_thumbnail_setting('DEBUG')
# Resolve variables
try:
relative_source = self.source_var.resolve(context)
size = self.requested_size or self.size_var.resolve(context)
except VariableDoesNotExist:
if DEBUG:
raise VariableDoesNotExist("Variable %s does not exist." %
self.source_var)
return ''
# Check size
try:
size = tuple([int(v) for v in size])
except (TypeError, ValueError):
size = ()
if len(size) != 2:
if DEBUG:
raise TemplateSyntaxError("Variable %s found but was not a"
"valid size" % self.size_var)
return ''
# Get thumbnail class
try:
thumbnail = DjangoThumbnail(relative_source, size, opts=self.opts,
**self.kwargs)
except:
if DEBUG:
raise
return ''
# Return the thumbnail class, or put it on the context
if self.context_name is None:
return thumbnail
if thumbnail:
context[self.context_name] = thumbnail
return ''
def render(self, context):
DEBUG = get_thumbnail_setting('DEBUG')
# Resolve source variable
try:
relative_source = self.source_var.resolve(context)
except VariableDoesNotExist:
if DEBUG:
raise VariableDoesNotExist("Variable '%s' does not exist." %
self.source_var)
else:
relative_source = None
# Resolve and check size variable
if self.requested_size is None:
try:
size = self.size_var.resolve(context)
except VariableDoesNotExist:
if DEBUG:
raise TemplateSyntaxError("Size argument '%s' is not a"
" valid size nor a valid variable." % self.size_var)
else:
if isinstance(size, basestring):
m = size_pat.match(size)
if m:
size = (int(m.group(1)), int(m.group(2)))
elif DEBUG:
msg = "Variable '%s' was resolved but '%s' is not a "\
"valid size." % (self.size_var, size)
raise TemplateSyntaxError(msg)
self.requested_size = size
# Get thumbnail instance
try:
thumbnail = DjangoThumbnail(relative_source, self.requested_size,
opts=self.opts, **self.kwargs)
except:
if DEBUG:
raise
else:
thumbnail = ''
# Return the thumbnail class, or put it on the context
if self.context_name is None:
return thumbnail
# We need to get here so we don't have old values in the context
# variable.
context[self.context_name] = thumbnail
return ''