98 lines
4 KiB
Python
98 lines
4 KiB
Python
import uuid
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import django.contrib.postgres.fields as postgres
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from django.utils.translation import ugettext_lazy as _
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from django.db import models
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from django.core.serializers.json import DjangoJSONEncoder
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from django.shortcuts import reverse
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from common.models import Entity, Mark, Review, Tag
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from common.utils import GenerateDateUUIDMediaFilePath
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from django.utils import timezone
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from django.conf import settings
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def book_cover_path(instance, filename):
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return GenerateDateUUIDMediaFilePath(instance, filename, settings.BOOK_MEDIA_PATH_ROOT)
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class Book(Entity):
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# widely recognized name, usually in Chinese
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title = models.CharField(_("title"), max_length=200)
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subtitle = models.CharField(_("subtitle"), blank=True, default='', max_length=200)
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# original name, for books in foreign language
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orig_title = models.CharField(_("original title"), blank=True, default='', max_length=200)
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author = postgres.ArrayField(
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models.CharField(_("author"), blank=True, default='', max_length=100),
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null=True,
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blank=True,
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default=list,
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)
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translator = postgres.ArrayField(
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models.CharField(_("translator"), blank=True, default='', max_length=100),
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null=True,
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blank=True,
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default=list,
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)
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language = models.CharField(_("language"), blank=True, default='', max_length=10)
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pub_house = models.CharField(_("publishing house"), blank=True, default='', max_length=200)
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pub_year = models.IntegerField(_("published year"), null=True, blank=True)
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pub_month = models.IntegerField(_("published month"), null=True, blank=True)
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binding = models.CharField(_("binding"), blank=True, default='', max_length=50)
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# since data origin is not formatted and might be CNY USD or other currency, use char instead
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price = models.CharField(_("pricing"), blank=True, default='', max_length=50)
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pages = models.PositiveIntegerField(_("pages"), null=True, blank=True)
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isbn = models.CharField(_("ISBN"), blank=True, null=False, max_length=20, db_index=True, default='')
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# to store previously scrapped data
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cover = models.ImageField(_("cover picture"), upload_to=book_cover_path, default=settings.DEFAULT_BOOK_IMAGE, blank=True)
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contents = models.TextField(blank=True, default="")
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class Meta:
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# more info: https://docs.djangoproject.com/en/2.2/ref/models/options/
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# set managed=False if the model represents an existing table or
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# a database view that has been created by some other means.
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# check the link above for further info
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# managed = True
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# db_table = 'book'
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constraints = [
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models.CheckConstraint(check=models.Q(pub_year__gte=0), name='pub_year_lowerbound'),
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models.CheckConstraint(check=models.Q(pub_month__lte=12), name='pub_month_upperbound'),
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models.CheckConstraint(check=models.Q(pub_month__gte=1), name='pub_month_lowerbound'),
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]
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def __str__(self):
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return self.title
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def get_absolute_url(self):
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return reverse("books:retrieve", args=[self.id])
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def get_tags_manager(self):
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return self.book_tags
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@property
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def verbose_category_name(self):
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return _("书籍")
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class BookMark(Mark):
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book = models.ForeignKey(Book, on_delete=models.CASCADE, related_name='book_marks', null=True)
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class Meta:
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constraints = [
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models.UniqueConstraint(fields=['owner', 'book'], name="unique_book_mark")
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]
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class BookReview(Review):
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book = models.ForeignKey(Book, on_delete=models.CASCADE, related_name='book_reviews', null=True)
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class Meta:
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constraints = [
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models.UniqueConstraint(fields=['owner', 'book'], name="unique_book_review")
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]
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class BookTag(Tag):
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book = models.ForeignKey(Book, on_delete=models.CASCADE, related_name='book_tags', null=True)
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mark = models.ForeignKey(BookMark, on_delete=models.CASCADE, related_name='bookmark_tags', null=True)
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class Meta:
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constraints = [
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models.UniqueConstraint(fields=['content', 'mark'], name="unique_bookmark_tag")
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]
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