我无法在 django 中进行查询以过滤掉当前登录用户正在关注的那些用户的帖子

Question

I am working on a Django project where a user can follow other users, create posts and so on just like Twitter or Instagram. However, I have a problem writing queries in views.py to filter out all the posts from the people that currently logged in user is following. Here, I am sharing my views.py function, model, template and corresponding ER diagram.

views.py

def followerspost(request):
  user = request.user
  profile = Profile.objects.filter(user = user)
  followings = user.profile.followings.all()
  for following in followings:
    posts = NewPost.objects.filter(user = following)

  return render(request,"network/following.html",{
    "user" : user,
    "profile" : profile,
    "followings" : followings,
    "posts" : posts,
  })

models.py

class NewPost(models.Model):
  user = models.ForeignKey(User, on_delete = models.CASCADE)
  post = models.TextField()
  timestamp = models.DateTimeField(auto_now_add = True)

  def __str__(self):
    return f"{self.post}"

class Profile(models.Model):
  user = models.OneToOneField(User, on_delete = models.CASCADE)
  picture = models.ImageField(blank=True,null=True,upload_to="images/")
  followers = models.ManyToManyField(User, blank=True, related_name="followers")
  followings = models.ManyToManyField(User,blank = True, related_name="followings")

I have designed my database according to the following ER diagram.

urls.py

urlpatterns = [
  path("profile/<int:id>/following/addfollower",views.followersPeople,name="addfollower"),
path("profile/<int:id>/following/removefollower",views.followersRemove,name="removefollower"),
path("following",views.followerspost,name="following"),]+ static(settings.MEDIA_URL, document_root= settings.MEDIA_ROOT)

following.html

 <h1>All Posts</h1> <div id="posts" class="card"> <div class="card-body"> {% for posts in posts %} <ul> <li class="card"> <div class="card-body"> <h5 class="card-title"><a style="text-decoration: none;" href="{% url 'profile' posts.user.id %}">{{ posts.user }}</a></h5> <h6 class="card-subtitle text-muted">{{ posts.timestamp }}</h6> <h3 class="card-text">{{ posts.post }}</h3> </div> </li> </ul> {% empty %} <h6>No post availabel </h6> {% endfor %} </div> </div>

But when I visit the following.html, it displays posts from only one user (Followed by the currently logged in user) and doesn't display any posts from others. What should I do now?

Answer 1

try this

def followerspost(request):
  user = request.user
  profile = Profile.objects.filter(user = user)
  followings = user.profile.followings.all()
  posts = NewPost.objects.filter(user__in= followings)

  return render(request,"network/following.html",{
    "user" : user,
    "profile" : profile,
    "followings" : followings,
    "posts" : posts,
  })

Answer 2

  for following in followings:
    posts = NewPost.objects.filter(user = following)

this is assigning value to posts variable every time, so you will get only last following's posts.

just do something like this and remove the loop

posts = NewPost.objects.filter(user__in = followings)