20120725
========


Continued on :ref:`lino.tutorial.polls` and :mod:`lino.tutorials.t1`.

- New attribute :attr:`lino.core.actions.Action.custom_handler`
  to avoid having to specify show_in_workflow in 
  :mod:`lino.tutorials.t1.polls.models`.

- Discovered and fixed a bug when trying to print a calendar 
  event whose Calendar.build_method is empty::

    Traceback (most recent call last):
      File "t:\hgwork\lino\lino\ui\extjs3\views.py", line 608, in get
        rv = a.run(elem,ar)
      File "t:\hgwork\lino\lino\mixins\printable.py", line 553, in run
        kw = self.run_(ar,elem,**kw)
      File "t:\hgwork\lino\lino\mixins\printable.py", line 527, in run_
        bm = get_build_method(elem)
      File "t:\hgwork\lino\lino\mixins\printable.py", line 454, in get_build_method
        bmname = elem.get_build_method()
      File "t:\hgwork\lino\lino\mixins\printable.py", line 824, in get_build_method
        if ptype.build_method:
    AttributeError: type object 'exceptions.NotImplementedError' has no attribute 'build_method'


- :menuselection:`Configuration --> Site Parameters` said::
  
    Http404
    lino.SiteConfigs has no row with prmiary key u'1'

    TRACEBACK:
      File "l:\snapshots\django\django\core\handlers\base.py", line 111, in get_response
        response = callback(request, *callback_args, **callback_kwargs)

      File "l:\snapshots\django\django\views\generic\base.py", line 58, in view
        return self.dispatch(request, *args, **kwargs)

      File "l:\snapshots\django\django\views\generic\base.py", line 79, in dispatch
        return handler(request, *args, **kwargs)

      File "t:\hgwork\lino\lino\ui\extjs3\views.py", line 551, in get
        raise http.Http404("%s has no row with prmiary key %r" % (rpt,pk))

  --> 
  :meth:`lino.Lino.get_site_config` now saves the instance if it doesn't exist.
  Don't remember why we wanted to NOT save the instance here.
  
- Added BooleanField `polls.Poll.hidden` to avoid layout problem when 
  a form layout has only one field.
  
- Found and fixed some more bugs in the development version:

  - "global name 'find_config_file' is not defined" when trying to 
    use the [pdf] button.
  
  - "AttributeError: 'module' object has no attribute 'get_actor2'" 
    when trying to save a grid config.
    
- Discovered and fixed a bug in version 1.4.8 : 
  __repr__ of a choicelist Choice failed under Python 2.6.6, 
  saying "Error in formatting: encode() takes no keyword arguments".
  
  
- Internal changes to Action.__init__()

- Another little bug::
  
    WARNING Action "Bestanden" failed for Kursanfragen "CourseRequest object":
    before_state_change() takes exactly 4 arguments (5 given).
    Ein Fehlerbericht wurde an den Systemverwalter geschickt.
    ERROR before_state_change() takes exactly 4 arguments (5 given)
    Traceback (most recent call last):
      File "t:\hgwork\lino\lino\ui\extjs3\views.py", line 612, in get
        rv = a.run(elem,ar)
      File "t:\hgwork\lino\lino\core\actions.py", line 422, in run
        row.before_state_change(ar,kw,old,self.target_state)
    TypeError: before_state_change() takes exactly 4 arguments (5 given)  

- Fixed the following reported bug:

    Im Grid-Fenster Personen. Schnellsuche "Muster", dann Doppelklick auf Max Mustermann, 
    dann im GeheZu nach 'jupa' suchen: Klienten mit "jupa" werden zwar im 
    Dropdown angezeigt, aber Lino springt nach Auswahl nicht darauf.
    Im Detail-Fenster blieb (zumindest für manche Operationen) 
    der quick-search-text aus der grid aktiv.
    
  New rule: 
  
    **Text entered in the quick search field of a grid window 
    is not forwarded to the detail window.**
    Because a separate quick search field is not necessary in detail view. 
    The record selector field works exactly as a quick search field.
    
  One drawback of this new rule is that you cannot do the following 
  any more (but I doubt that any user was aware of this possibility): 
  in grid view specify a quick search text to select, 
  let's say, 10 records out of 1000, then double click and browse 
  these 10 records using the detail navigator.