20121117
========

Continued on :class:`lino_welfare.modlib.pcsw.models.BeIdReadCardAction`.

- Renamed :mod:`lino.utils.niss` to :mod:`lino.utils.ssin`
- :func:`lino.core.modeltools.obj2str` has become more human-readable:

  - datetime.date values are rendered as simple strings `YYYY-MM-DD` 
  - unicode strings are no longer preceded by an 'u'
  
- There was a bug in :func:`lino.utils.ssin.generate_ssin`.
- :mod:`lino.utils.ssin` is now handles birth dates after 2000 correctly.

All four live demo sites are now working.

:lino:`/demos`

Managing a park of Lino applications
------------------------------------

Currently I have for each demo site the two files `manage.py` and `wsgi.py`.

- manage.py::

    #!/usr/bin/env python
    if __name__ == "__main__":
    
        import sys; sys.path.append('/home/luc/mypy')  # [Note1]
        import os ; os.environ['DJANGO_SETTINGS_MODULE'] = 'demo1.settings' # [Note2]
        
        from django.core.management import execute_from_command_line
        execute_from_command_line(sys.argv)
        
- wsgi.py::

    import sys ; sys.path.append('/home/luc/mypy') # [Note1]
    import os ; os.environ['DJANGO_SETTINGS_MODULE'] = 'demo1.settings' # [Note2]

    import django.core.handlers.wsgi
    application = django.core.handlers.wsgi.WSGIHandler()


[Note1] This line is the same for each site.
[Note2] differs for each site, but is each time equal to :attr:`lino.Lino.project_name`


I can replace the two following lines::

    import sys ; sys.path.append('/home/luc/mypy')
    import os ; os.environ['DJANGO_SETTINGS_MODULE'] = 'demo1.settings'
    
by::    

    import sys ; sys.path.append('/home/luc/mypy')
    from demo_sites import setup ; setup(__file__)
      


Und dann die :file:`/home/luc/mypy/demo_sites/__init__.py` sähe 
wie folgt aus::

  import os
  from os.path import split, dirname, abspath
  def setup(filename):
      prj = split(dirname(abspath(filename)))[-1]
      os.environ['DJANGO_SETTINGS_MODULE'] = 'demo_sites.' + prj + '.settings'



Loading demo fixtures
---------------------

- moved the Polls Tutorial from lino.tutorials.t1 to lino.apps.polls_tutorial

- :mod:`initdb <djangosite.management.commands.initdb>` now uses the `load_initial_data` 
  stealth option to avoid the automatic loading of `initial_data` fixtures 
  which caused an irritating message "No fixtures found". 
  This message came because there are no `initial_data` fixtures. 
  No registered Lino user ever used `initial_data` fixtures. 
  They cause only problems.
  One of them, by the way is that `syncdb`, when called with --traceback, 
  forgets to forward this option when calling loaddata for initial_data.