如何使用 django 制作类似 twitter 的主页？

Question

我现在是 Django Web 框架的新手。我想制作一个类似 twitter/facebook 的主页，用户可以在其中发布状态或更新，还可以查看其他 ures 的帖子，但我不能这样做，因为当用户登录时，他会发布更新但可以不认为这是他的家。当他退出时，他可以查看所有帖子。这是我的视图函数。

views.py

def index(request):
   posts = NewPost.objects.all().order_by("-timestamp")

   if request.user.is_authenticated:
      if request.method == "POST":
          post = NewPostForm(request.POST)
          user = request.user
          timestamp = datetime.now()
          if post.is_valid:
              post = post.save(commit=False)
              postdata = NewPost(post=post,user=user,timestamp=timestamp)
              postdata.save()

          return render(request,"network/index.html",{
              "post" : post,
              "user" : user,
              "timestamp" : timestamp
          })

      else:
          post = NewPostForm()
          return render(request,"network/index.html",{
              "post" : post
          })

  return render(request,"network/index.html",{
      "posts" : posts
  })

urls.py

urlpatterns = [
   path("", views.index, name="index"),
   path("login", views.login_view, name="login"),
   path("logout", views.logout_view, name="logout"),
   path("register", views.register, name="register"),    
]

模板

{% extends "network/layout.html" %}

{% block body %}
    <div style="margin: 10px 10px 10px 10px;">
        <h1>All Posts</h1>
        {% if user.is_authenticated %}
            <div class="border border-success" style="margin: 10px 10px 10px 10px;">
                <div style="margin: 10px 10px 10px 10px;">
                    <h3>New Post</h3>
                    <form action="{% url 'index' %}" method="POST">
                        {% csrf_token %} 
                        <div class="form-group">
                            <!-- <textarea name="post" class="form-control" cols="30" rows="5" placeholder="What is in your mind? "></textarea> -->
                            {{ post.as_table }}
                        </div>
                        <input class="btn btn-success" type="Submit" value="Post">
                    </form>
                </div>

            </div>
        {% endif %}
        <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">{{ posts.user }}</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>
    </div>
{% endblock %}

如果用户尝试发布更新，他会单击发布按钮，但表单会消失。 my problem

Answer 1

• 您必须在 else 块中的上下文中传递 user 才能使表单出现（如果用户 is_authenticated 则只有您在显示表单）。
• 您必须将所有帖子传递给上下文才能使所有帖子可见。

这是你必须做的。

def index(request):
   posts = NewPost.objects.all().order_by("-timestamp")

   if request.user.is_authenticated:
      user = request.user # changed here
      if request.method == "POST":
          post = NewPostForm(request.POST)
          timestamp = datetime.now()
          if post.is_valid:
              post = post.save(commit=False)
              postdata = NewPost(post=post,user=user,timestamp=timestamp)
              postdata.save()

          return render(request,"network/index.html",{
              "post" : post,
              "posts" : posts,
              "user" : user,
              "timestamp" : timestamp
          })

      else:
          post = NewPostForm()
          return render(request,"network/index.html",{
              "post" : post,
              "posts" : posts,
              "user" : user, # added here
              "timestamp" : timestamp # added now, remove if not needed
          })

   return render(request,"network/index.html",{
      "posts" : posts
   })