88 lines
3.0 KiB
Python
88 lines
3.0 KiB
Python
from django.db import models
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from django.utils.html import format_html
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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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Il faut alors définir les méthodes :
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- get_date
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- get_labels
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- get_bg_color
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Les valeurs retournée sont utilisée par les templatetages 'notes'
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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('Crée le', blank=True, null=True)
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created_time = models.TimeField('Heure', blank=True, null=True)
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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 _get_child_class_and_instance(self):
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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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def __str__(self):
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return "%s of %s" % (self.child_class.__qualname__, self.created_by)
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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 'get_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,
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# 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'),
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doc="background color of header")
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labels = property( cached_attr('labels'),
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doc="list of string to display as labels")
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