87 lines
2.3 KiB
Python
87 lines
2.3 KiB
Python
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from datetime import datetime
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from django.db import models
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from django.utils.translation import ugettext as _
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class Collection(models.Model):
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name = models.CharField(max_length=255)
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def __str__(self):
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return '%s' % self.name
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class Meta:
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abstract = True
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ordering = ['name']
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class Item(models.Model):
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TARGET_MODEL = None
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TARGET_VERBOSE_NAME = None
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# status choices
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CREATED = 'created'
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STATUS_CHOICES = (
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(CREATED, _('New')),
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)
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DEFAULT_CHOICE = CREATED
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name = models.CharField(max_length=255)
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def __str__(self):
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return '%s' % self.name
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@classmethod
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def on_class_prepared(cls):
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"""
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Add new field 'collection' which is a link to TARGET_MODEL.
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Add new field 'status' which is a list of choices. With CREATED.
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"""
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target_field = models.ForeignKey(
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cls.TARGET_MODEL,
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related_name=cls.RELATED_TARGET_NAME,
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verbose_name=cls.TARGET_VERBOSE_NAME)
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target_field.contribute_to_class(cls, 'collection')
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status_field = models.CharField(
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max_length=30,
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choices=Item.STATUS_CHOICES + cls.STATUS_CHOICES,
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default=cls.DEFAULT_CHOICE)
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status_field.contribute_to_class(cls, 'status')
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class Meta:
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abstract = True
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ordering = ['name']
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class Timeline(models.Model):
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"""
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Keep changes on collection.
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For an example, a game cretion date. Or when you completed a game.
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"""
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TARGET_MODEL = None
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STATUS_CHOICES = Item.STATUS_CHOICES
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DEFAULT_CHOICE = Item.CREATED
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date = models.DateTimeField(default=datetime.now)
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@classmethod
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def on_class_prepared(cls):
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"""
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Add new field 'item' which is a link to TARGET_MODEL
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"""
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target_field = models.ForeignKey(cls.TARGET_MODEL)
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target_field.contribute_to_class(cls, 'item')
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status_field = models.CharField(
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max_length=30,
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choices=Item.STATUS_CHOICES + cls.STATUS_CHOICES,
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default=cls.DEFAULT_CHOICE)
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status_field.contribute_to_class(cls, 'status')
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def __str__(self):
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return '%s: %s - %s' % (
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self.date.strftime('%Y-%m-%d'),
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self.status,
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self.item)
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class Meta:
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abstract = True
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ordering = ('-date',)
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