def getBody(self,base_url=''):
""" Body of mail """
#default values
diff=-1
body=None
#acquire aggregator utility from collective.plone.reader
aggregator=self.context
aggr_util=getMultiAdapter((self.context, self.request), name=u'aggregator_utility_view')
#get recurrence from aggregator
field=aggregator.getField('recurrence')
if field:
recurrence=field.get(aggregator)
diff=RECURRENCE.get(recurrence,-1)
#get contents from aggregator filtered date and limit
date_limit=DateTime()-diff
list_of_contents=aggr_util.getFavoritesByAggregator_not_merged(aggregator,'all',date_limit=date_limit,size_limit=10)
#list_of_contents is a dictionary <section>: <list of contents>
#and I want to know how many children there are
childern=sum([len(folder['childs']) for folder in list_of_contents.values()])
#if there's no children we have no mail
if childern>0:
template=self.context.restrictedTraverse('mail_template')
html=template(self,
list_of_contents=list_of_contents,
recurrence=LABEL_CONVERTER.get(recurrence),
aggregator_url=aggregator.absolute_url(),)
#if base_url is sets we replace the url of the template
if len(base_url)>0:
fake_portal_path='http://foo%s'%'/'.join(self.plone_site.getPhysicalPath())
html=html.replace(fake_portal_path,base_url)
body = stoneagehtml.compactify(html).decode('utf-8')
return body
