(2018-05-11. 파이톤이 제로에서 원까지) 6, (Django) Django 모형1.2.2 클래스의 속성

    ...
    books = models.Manager()

class BookInfoManager(models.Manager):
    def get_queryset(self):
        return super(BookInfoManager, self).get_queryset().filter(isDelete=False)
class BookInfo(models.Model):
    ...
    books = BookInfoManager()

class BookInfo(models.Model):
    ...
    @classmethod
    def create(cls, title, pub_date):
        book = cls(btitle=title, bpub_date=pub_date)
        book.bread=0
        book.bcommet=0
        book.isDelete = False
        return book
     ：from datetime import *
  ：book=BookInfo.create("hello",datetime(1980,10,11));
  ：book.save()

class BookInfoManager(models.Manager):
    def create_book(self, title, pub_date):
        book = self.model()
        book.btitle = title
        book.bpub_date = pub_date
        book.bread=0
        book.bcommet=0
        book.isDelete = False
        return book

class BookInfo(models.Model):
    ...
    books = BookInfoManager()
  ：book=BookInfo.books.create_book("abc",datetime(1980,1,1))
  ：book.save()

class BookInfoManager(models.Manager):
    def create_book(self, title, pub_date):
        book = self.create(btitle = title,bpub_date = pub_date,bread=0,bcommet=0,isDelete = False)
        return book

class BookInfo(models.Model):
    ...
    books = BookInfoManager()
  ：book=Book.books.create_book("abc",datetime(1980,1,1))
  ：book.pk