需求：傳入文章，要求獲得對應文章的使用者資訊，如使用者郵箱。

模型：

class Article(models.Model):
    '''
    文章詳細
    '''
    nid = models.BigAutoField(primary_key=True)
    title = models.CharField(verbose_name='文章標題',max_length=128)
    summary = models.CharField(verbose_name='文章簡介',max_length=255)
    read_count = models.IntegerField(default=0)
    comment_count = models.IntegerField(default=0)
    up_count = models.IntegerField(default=0)
    down_count = models.IntegerField(default=0)
    create_time = models.DateTimeField(verbose_name='建立時間',auto_now_add=True)
    blog = models.ForeignKey(verbose_name='所屬部落格',to='Blog',to_field='nid')
    # category = models.ForeignKey(verbose_name='文章型別',to='Category',to_field='nid',null=True)

 

class Blog(models.Model):
    '''
    部落格資訊
    '''
    nid = models.BigAutoField(primary_key=True)
    title = models.CharField(verbose_name='個人部落格標題',max_length=64)
    site = models.CharField(verbose_name='個人部落格字首', max_length=32, unique=True)
    user = models.OneToOneField(to='UserInfo',to_field='nid')
 

class UserInfo(models.Model):
    '''
    使用者表
    '''
    nid = models.BigAutoField(primary_key=True)
    username = models.CharField(verbose_name='使用者名稱',max_length=32,unique=True)
    password = models.CharField(verbose_name='密碼',max_length=64)
    nickname = models.CharField(verbose_name='暱稱',max_length=32)
    email = models.EmailField(verbose_name='郵箱',unique=True)
    avatar = models.ImageField(verbose_name='頭像',null=True)

    create_time = models.DateTimeField(verbose_name='註冊時間',auto_now_add=True)
 

def index(request):
    all_articles = models.Article.objects.filter().order_by('-create_time')
    return render(request,'index.html',{'all_articles':all_articles})

<a href="/{{ post.blog.site }}.html"><div>提問者：{{ post.blog.user.email }}</div></a>