class Member(audit.FullAuditMixin, audit.DeletionMixin):
_format = u'{} - name: {}, checkout_limit: {}'
id = mm_fields.BigAutoField(primary_key=True)
name = models.CharField(max_length=mm_fields.SHORT_CHAR_LEN)
checkout_limit = models.IntegerField(default=3)
def __unicode__(self):
return self._format.format(
self.id,
self.name,
self.checkout_limit,
)
class Book(audit.CreationAuditMixin, audit.DeletionMixin):
_format = u'{} - title: {}, author: {}, genre: {}'
id = mm_fields.BigAutoField(primary_key=True)
title = models.CharField(max_length=mm_fields.LONG_CHAR_LEN)
author = models.CharField(max_length=mm_fields.SHORT_CHAR_LEN)
genre = models.CharField(max_length=mm_fields.SHORT_CHAR_LEN)
def __unicode__(self):
return self._format.format(
self.id,
self.title,
self.author,
self.genre,
)
class BookOne(audit.CreationAuditMixin, audit.DeletionMixin):
_format = u'{} - title: {}, author: {}, genre: {}'
id = mm_fields.BigAutoField(primary_key=True)
title = models.CharField(max_length=mm_fields.LONG_CHAR_LEN)
author = models.CharField(max_length=mm_fields.SHORT_CHAR_LEN)
# The CharField has a couple arguments we can add to let us restrict the options available
genre = models.CharField(max_length=mm_fields.SHORT_CHAR_LEN)
def __unicode__(self):
return self._format.format(
self.id,
self.title,
self.author,
self.genre,
)
class BookTwo(audit.CreationAuditMixin, audit.DeletionMixin):
_format = u'{} - title: {}, author: {}, genre: {}'
id = mm_fields.BigAutoField(primary_key=True)
title = models.CharField(max_length=mm_fields.LONG_CHAR_LEN)
author = models.CharField(max_length=mm_fields.SHORT_CHAR_LEN)
# We can add a "choices" keyword and reference the choices list on the Genres class
# This will limit the options a book can use to the list from above
genre = models.CharField(max_length=mm_fields.SHORT_CHAR_LEN, choices=Genres.options)
def __unicode__(self):
return self._format.format(
self.id,
self.title,
self.author,
self.genre,
)
class Checkout(audit.FullAuditMixin, audit.DeletionMixin):
_format = u'{} - book: {}, member: {}, return_by: {}, returned: {}'
id = mm_fields.BigAutoField(primary_key=True)
book = mm_fields.BigForeignKey('library.Book', related_name='checkouts')
member = mm_fields.BigForeignKey('library.Member',
related_name='checkouts')
return_by = models.DateTimeField()
returned = models.BooleanField(default=False)
def __unicode__(self):
return _format.format(
self.id,
self.book,
self.member,
self.return_by,
self.returned,
)