When an Interval property receives a new value, the
history of the item can't be displayed anymore. The
html-generating code for the history in templating.py
looks broken for Interval (and for Date). The attached
patch cures the problem, but ignores i18n.

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Sorry, I can't reproduce a problem here. Could you spell out 
what you mean by "When an Interval property receives a new 
value" in a step-by-step manner, using a fresh demo instance. 
 
Also, I presume you're referring to the current CVS HEAD. 

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Yes, I'm on CVS HEAD here. I could reproduce the bug here on
MySQL with a fresh tracker:

- create a tracker with a mysql backend
- add a property i=Interval() to the user class in schema.py
- add an form field to html/user.item.html for the new property
- Set the new property to a value for some user
- this works and is correctly displayed in the history
- Now change the property by setting it to a new value
- The history can't be displayed anymore (see tb below)

studied the history code a while, but I'm not in a position
to fix it properly ;)

stefan.




  File
"/home/atw/cvstracker/cvs/roundup/cgi/PageTemplates/Expressions.py",
line 95, in render
    ob = ob()
  File "/home/atw/cvstracker/cvs/roundup/cgi/templating.py",
line 912, in history
    translator=self._client))
  File "/home/atw/cvstracker/cvs/roundup/date.py", line 480,
in __init__
    if len(spec) == 7:
AttributeError: Interval instance has no attribute '__len__'