Django 多对多的保存

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Django 多对多的保存

Models 模型如下：

Python

from <span class="wp_keywordlink_affiliate"><a href="https://www.168seo.cn/tag/django" title="View all posts in django" target="_blank">django</a></span>.db import models # Create your models here. class Category(models.Model): cate_name = models.CharField(max_length=30) cate_desc = models.CharField(max_length=100) cate_slug = models.CharField(max_length=30) def __str__(self): return self.cate_name class Meta: db_table="movie_cate" class Tag(models.Model): tag_name = models.CharField(max_length=30) tag_desc = models.CharField(max_length=100) tag_slug = models.CharField(max_length=30) def __str__(self): return self.tag_name class Meta: db_table="movie_tag" class Director(models.Model): name = models.CharField(max_length=30) desc = models.TextField(blank=True) def __str__(self): return self.name class Meta: db_table="director" class Actor(models.Model): name = models.CharField(max_length=30) desc = models.TextField(blank=True) def __str__(self): return self.name class Meta: db_table="actor" class Dl_links(models.Model): links = models.CharField(max_length=200) links_name = models.CharField(max_length=30) def __str__(self): return self.links_name class Meta: db_table="dl_links" class Movie(models.Model): title = models.CharField(max_length=50) category = models.ForeignKey(Category) directors = models.ManyToManyField(Director) actors = models.ManyToManyField(Actor) poster = models.CharField(max_length=100) tags = models.ManyToManyField(Tag) other_name = models.CharField(max_length=100,default='') dl_links = models.ForeignKey(Dl_links,null=True,default='') score = models.IntegerField() def __str__(self): return self.title class Meta: db_table="movie"

from django . db import models

# Create your models here.

class Category ( models . Model ) :

cate_name = models . CharField ( max_length = 30 )

cate_desc = models . CharField ( max_length = 100 )

cate_slug = models . CharField ( max_length = 30 )

def __str__ ( self ) :

return self . cate_name

class Meta :

db_table = "movie_cate"

class Tag ( models . Model ) :

tag_name = models . CharField ( max_length = 30 )

tag_desc = models . CharField ( max_length = 100 )

tag_slug = models . CharField ( max_length = 30 )

def __str__ ( self ) :

return self . tag_name

class Meta :

db_table = "movie_tag"

class Director ( models . Model ) :

name = models . CharField ( max_length = 30 )

desc = models . TextField ( blank = True )

def __str__ ( self ) :

return self . name

class Meta :

db_table = "director"

class Actor ( models . Model ) :

name = models . CharField ( max_length = 30 )

desc = models . TextField ( blank = True )

def __str__ ( self ) :

return self . name

class Meta :

db_table = "actor"

class Dl_links ( models . Model ) :

links = models . CharField ( max_length = 200 )

links_name = models . CharField ( max_length = 30 )

def __str__ ( self ) :

return self . links_name

class Meta :

db_table = "dl_links"

class Movie ( models . Model ) :

title = models . CharField ( max_length = 50 )

category = models . ForeignKey ( Category )

directors = models . ManyToManyField ( Director )

actors = models . ManyToManyField ( Actor )

poster = models . CharField ( max_length = 100 )

tags = models . ManyToManyField ( Tag )

other_name = models . CharField ( max_length = 100 , default = '' )

dl_links = models . ForeignKey ( Dl_links , null = True , default = '' )

score = models . IntegerField ( )

def __str__ ( self ) :

return self . title

class Meta :

db_table = "movie"

多对多的保存

首先查询出多对多需要用的

Python

""" category = models.ForeignKey(Category) directors = models.ManyToManyField(Director) actors = models.ManyToManyField(Actor) tags = models.ManyToManyField(Tag) dl_links = models.ForeignKey(Dl_links,null=True,default='') """ In [1]: from movie.models import * In [2]: c1 = Category.objects.get(pk=1) In [3]: c1 Out[3]: <Category: 分类0> In [4]: d1 = Director.objects.get(pk=1) In [5]: d1 Out[5]: <Director: 0导演> In [6]: d2 = Director.objects.get(pk=2) In [7]: t1 = Tag.objects.get(pk=1) In [8]: t2 = Tag.objects.get(pk=2) In [9]: dl1 = Dl_links.objects.get(pk=1) # 保存多对一的类型 In [19]: mv= Movie.objects.create(title='海王',category=c1,poster="ddd",other_na ...: me='d',dl_links=dl1,score=10) # 保存与之关联的多对多 In [21]: mv.directors.add(d1,d2) In [22]: mv.tags.add(t1,t2) In [23]: mv.actors.add(a1,a2) In [24]: mv Out[24]: <Movie: 海王>