skins/content/changes_history.py

   1 ##parameters=compare=''
   2
   3 from Products.Plinn.utils import getAdapterByInterface
   4 options = {}
   5 form = context.REQUEST.form
   6 history = getAdapterByInterface(context, 'Products.Plinn.interfaces.IContentHistory', None)
   7 comparison = None
   8 resultsLength = 20
   9 start = form.get('first_transaction',0)
  10 stop = start + resultsLength
  11 batchNavigation = None
  12
  13 if history is not None :
  14         entries = history.listEntries(first=start, last=stop+1)
  15
  16         previous, next = None, None
  17         if len(entries) == resultsLength + 1 :
  18                 entries = entries[0:-1]
  19                 next = start + resultsLength
  20
  21         if start > 0 :
  22                 previous = start - resultsLength
  23
  24         batchNavigation = {'previous':previous, 'next':next, 'current':start}
  25
  26         options['entries'] = entries
  27         r = form.get('rightkey', entries[0]['key'])
  28         try :
  29                 l = form.get('leftkey',  entries[1]['key'])
  30         except IndexError :
  31                 l = r
  32
  33         options['leftkey'] = l
  34         options['rightkey'] = r
  35         if compare :
  36                 comparison = history.compare(l, r)
  37 else :
  38         options['entries'] = None
  39
  40 options['comparison'] = comparison
  41 options['batchNavigation'] = batchNavigation
  42
  43 return context.changes_history_template(**options)