Question

我的模特：

class ClientProfile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE, null=True, related_name='client_profile')
    follows = models.ManyToManyField(User, 
    related_name='follows',blank=True)
    profile_picture = models.ImageField( blank=True)
    phone_regex = RegexValidator(
        regex=r'^\+?1?\d{9,15}$',
        message="Phone number must be entered in the format: '+999999999'. Up to 15 digits allowed."
    )
    mobile_number = models.CharField(validators=[phone_regex], 
    max_length=17, blank=True)
    dob = models.DateField(auto_now = False, null = True)
    profile_summary = models.TextField()
    my_career_objective = models.TextField()
    educational_qualification = models.CharField(max_length=200)
    work_experience = models.IntegerField(blank=True, null=True)
    skill_set = models.TextField(blank=True)
    address_1 = models.CharField(max_length=300,blank=True)
    address_2 = models.CharField(max_length=300,blank=True)
    # new fileds
    about_me = models.TextField(blank=True)
    birthplace = models.CharField(max_length=150,blank=True)
    lives_in = models.CharField(max_length=150,blank=True)
    occupation = models.CharField(max_length=150, blank=True)
    gender = models.CharField(choices=GENDER_CHOICES,max_length=150, blank=True)
    marital_status = models.CharField(choices=MARITAL_CHOICES,max_length=150, blank=True,default=1)
    religion = models.CharField(max_length=150, blank=True)
    political_incline = models.TextField(blank=True)
    # other_social_networks = models.TextField(blank=True)
    hobbies = models.TextField(blank=True)
    favorite_tv_shows = models.TextField(blank=True)
    favorite_movies = models.TextField(blank=True)
    favorite_games = models.TextField(blank=True)
    favorite_music_band_artists = models.TextField("Favorite Music, Bands / Artists", blank=True)
    favorite_books = models.TextField(blank=True)
    favorite_writers = models.TextField(blank=True)
    other_interests = models.TextField(blank=True)
    subscription = models.TextField(blank=True, null=True, default="Free")


    def __str__(self):
        return str(self.user.first_name) + " " + str(self.user.last_name)




class Task(models.Model):
    level = models.ForeignKey(Level, on_delete=models.CASCADE)
    todo = models.ForeignKey(ToDo, on_delete=models.CASCADE)
    student = models.ForeignKey(User, on_delete=models.CASCADE)
    title = models.CharField(max_length=150)
    content = models.TextField()
    timestamp = models.TimeField(auto_now=True)
    datestamp = models.DateField( auto_now=True)
    like = models.ManyToManyField(User,related_name='user_likes',blank=True)
    is_verified=models.BooleanField(default=False,blank=True)

    def __str__(self):
        return self.title


   def get_absolute_url(self):
       return reverse('student:dashboard')
   objects = PostManager()

   @property
   def comments(self):
       instance = self
       qs = Comment.objects.filter_by_instance(instance)
       return qs

   @property
   def get_content_type(self):
       instance = self
       content_type = 
       ContentType.objects.get_for_model(instance.__class__)
       return content_type

我想显示登录用户的所有任务，以及所有用户的所有任务，然后显示登录用户。实现此目的的最佳django查询是什么？ ClientProfile模型中的following字段被赋予了许多字段，以描述该用户紧随其后的所有用户。如何用'or'编写Django查询。每个任务都通过外键'student'指向用户。我想显示登录用户和所有用户的所有任务，然后在首页中显示登录用户

Answer 1

在Task的student字段中放置一个related_name属性。（我们称它为task）如果login_in_user是您的登录用户对象，那么logged_in_user.task会给logged_in_user任务以及用户的追随者任务：

tasks = Task.objects.filter(student__in= logged_in_user.follows.all())

没有related_name。

task = Task.objects.filter(Q(student=logged_in_user) | Q(student__in=logged_in_user.follows.all()))

Answer 2

这对我有用：

 client=ClientProfile.objects.get(user=request.user)
 task = Task.objects.filter
  (Q(student=request.user) | 
   Q(student__in=client.follows.all()))
 .order_by('timestamp').prefetch_related('images_set')

django查询以获取用户发帖，然后是用户

2 个答案: