MTV模型(django):
M:模型层(models.py)
T:templates
V:views
MVC模型:
M:模型层(models.py)
V:视图层(views.py)
C:控制器(Controller) urls.py
本质:django的MTV也是MVC
# 1、第一种django的orm自动创建
class Book(models.Model):
name = models.CharField(max_length=32)
authors = models.ManyToManyField(to='Author')
class Author(models.Model):
name = models.CharField(max_length=32)
# 2、第二种纯手动创建第三张表
class Book(models.Model):
name = models.CharField(max_length=32)
class Author(models.Model):
name = models.CharField(max_length=32)
class Book2Author(models.Model):
book = models.ForeignKey(to='Book')
author = models.ForeignKey(to='Author')
info = models.CharField(max_length=32)
# 3、第三种半自动创建第三张表
class Book(models.Model):
name = models.CharField(max_length=32)
authors = models.ManyToManyField(to='Author', through='Book2Author', through_fields=('book', 'author'))
class Author(models.Model):
name = models.CharField(max_length=3)
book = models.ManyToManyField(to='Book', through='Book2Author', through_fields=('author', 'book'))
class Book2Author(models.Model):
book = models.ForeignKey(to='Book')
author = models.ForeignKey(to='Author')
info = models.CharField(max_length=32)
对应的数据格式:name=jason&password=123
后端获取数据:request.POST
ps:django会将urlencoded编码的数据解析自动放到request.POST
form表单传输文件的编码格式
后端获取文件格式数据:request.FILES
后端获取普通键值对数据:request.POST