110 lines
3.9 KiB
Python
110 lines
3.9 KiB
Python
from django.utils import timezone
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from django.utils.html import format_html
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from django.db import models
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from . import managers
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class Note(models.Model):
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""" Note relative à un sujet.
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Peut être utilisée comme classe parente.
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class ChildNote(Note):
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def note_date(self): value for 'create_date'
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def note_time(self): value for 'created_time'
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def note_bg_colors(self): ('header bkgd', 'labels bkgd')
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def note_labels(self): list of objects printed as bootstrap labels
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"""
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objects = managers.NoteManager()
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sujet = models.ForeignKey(
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'sujets.Sujet',
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related_name="notes",
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on_delete=models.CASCADE
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)
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text = models.TextField()
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created_by = models.ForeignKey(
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'utilisateurs.Professionnel',
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blank=True,
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null=True
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)
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created_date = models.DateField('Date')
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created_time = models.TimeField('Heure')
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def save(self, *args, **kwargs):
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if not self.created_date or not self.created_time:
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child_instance = self.cast()
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self.created_date = child_instance.note_date()
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self.created_time = child_instance.note_time()
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return super().save(*args, **kwargs)
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def __str__(self):
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return "%s [%s %s]" % ( self.child_class.__qualname__,
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self.created_date,
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self.created_time)
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def note_date(self):
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""" Default 'created_date' value. Child may override this method. """
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return timezone.now().date()
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def note_time(self):
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""" Default 'created_time' value. Child may override this method. """
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return timezone.now().time()
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def note_bg_colors(self):
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""" Returns (header background color, labels color).
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Values must be valid bootstrap color name
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"""
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return ("default", "info")
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def note_labels(self):
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""" Returns list of objects that are printed as bootstrap labels """
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return [self.created_by]
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def _get_child_class_and_instance(self):
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""" Get child class and instance of Note, stored in _child_instance
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and _child_class.
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Store self and self.__class__ if self is either a child of Note,
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or a Note instance with no child.
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"""
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self._child_instance = self
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self._child_class = self.__class__
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if self._meta.get_parent_list(): # If self is actually child instance
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return
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for f in self._meta.get_fields():
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if f.is_relation and f.one_to_one:
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self._child_instance = getattr(self, f.name)
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self._child_class = self._child_instance.__class__
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return
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@property
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def child_class(self):
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if not hasattr(self, '_child_class'):
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self._get_child_class_and_instance()
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return self._child_class
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def cast(self):
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if not hasattr(self, '_child_instance'):
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self._get_child_class_and_instance()
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return self._child_instance
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## Attributes used by 'notes' template tags
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# bg_color : background color of header
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# labels : list of strings to put in labels
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def cached_attr(name):
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""" Cached property set on return value of 'note_ATTR' method on
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child instance.
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"""
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private_name = '_%s' % name
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def getter(self):
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if not hasattr(self, private_name):
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setattr(self,
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private_name,# Call *child instance* method
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getattr(self.cast(), 'note_%s' % name)()
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)
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return getattr(self, private_name)
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return getter
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bg_colors = property(cached_attr('bg_colors'), doc="background color of header")
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labels = property(cached_attr('labels'), doc="list of string to display as labels")
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