Rookie Coder's questions

必须有一个管理面板（我在Django上做），用户被添加到bot通道，他收到他的ID，管理员通过管理面板或表单将所有数据输入数据库（普通html模板）

# Модель клиента 

class Client(models.Model):        
surname = models.CharField(max_length=128, blank=False, null=False)
name = models.CharField(max_length=128, blank=False, null=False)
fatname = models.CharField(max_length=128, blank=False, null=False)
phone = models.PositiveSmallIntegerField(blank=True, null=True)
email = models.EmailField(max_length=128, blank=True, null=True)
tgid = models.CharField(max_length=32, blank=True, null=True)    # id клиента в канале бота

def __str__(self):
    fullname = self.surname + ' ' + self.name + ' ' + self.fatname
    return fullname

接下来，管理员创建一个检查模型（学费）并将其发送给机器人通道中的特定客户端

# Модель чека

class Check(models.Model):
client = models.ForeignKey(Client, on_delete=models.CASCADE)
summary = models.PositiveIntegerField(blank=False, null=False)
summary_name = models.CharField(max_length=256, blank=False, null=False)
text_font = ImageFont.truetype('font.ttf', 200)  # шрифт
default_check_image = Image.open("default_check.jpg")
client_check_image = ImageDraw.Draw(default_check_image)

def save(self):
    self.client_check_image.text((0, 20), self.summary, (237, 230, 211), font=self.text_font)
    self.client_check_image.text((0, 30), self.summary_name, (237, 230, 211), font=self.text_font)
    self.client_check_image.save("client_check.jpg")
    # тут мы записываем суму чека цифрами и буквами поверх стандартного изображения чека
    # и сохраняем в новое которое должны отправить клиенту

我想在保存支票后会自动发送给客户端。就是这样，我被困在做什么和如何做，如何让 Django 后端与电报机器人一起工作？或者也许我需要一个没有 Django 的不同项目结构？

问题是，是否可以在没有 express.js 的情况下用纯 js 制作 url，例如：books/、books/<id>/、user/<id>/、user/books/？

模型.py

class PostComments(models.Model):
post = models.ForeignKey(Post, on_delete=models.CASCADE)
user = models.ForeignKey(User, on_delete=models.CASCADE)
content = models.TextField(max_length=300, blank=False)
created_on = models.DateTimeField(auto_now_add=True)

表格.py

class CommentCreateForm(forms.ModelForm):
class Meta:
    model = PostComments
    fields = ('content',)

    def __init__(self, *args, **kwargs):
        self.user = kwargs.pop('user', None)
        super(CommentCreateForm, self).__init__(*args, **kwargs)

    def save(self, commit=True):
        obj = super(CommentCreateForm, self).save(commit=False)
        obj.user = self.user
        if commit:
            obj.save()
        return obj

视图.py

def post_detail(request, pk):
post = get_object_or_404(Post, pk=pk)
comments = post.postcomments_set.order_by('-created_on')
if request.method == 'POST':
    comment_form = CommentCreateForm(request.POST)
    if comment_form.is_valid():
        new_comm = comment_form.save(commit=False)
        new_comm.user = request.user
        new_comm.post = post
        new_comm.save()
else:
    comment_form = CommentCreateForm(request.POST)
context = {'post': post, 'comment_form': comment_form, 'comments': comments}
return render(request, 'blog/post_detail.html', context)

post_detail.html

   {% extends 'blog/base.html' %}
   {% block content %}
        <div class="container">
        <h1>{{post.title}}</h1>
        <p>{{post.content}}</p>
        <p>Categories: {{post.category}}</p>
        <p>Author: {{post.user.company.name}}</p>
        <p>Pub date: {{post.created_on}}</p>
        {% for img in post.postimages_set.all %}
        <img class="" src="{{ img.image.url }}">
        {% endfor %}
        <form class="form" method="POST" enctype='multipart/form-data'>
            {% csrf_token %}
            {{ comment_form.content }}
            <button type="submit" class="btn btn-primary">Create comment</button>
        </form>
        {% for comm in comments %}
            {% if comm.user == request.user %}
                <p>{{comm.content}}</p>
                <p>{{comm.user}}</p>
                <p>{{comm.created_on}}</p>
            {% else %}
            <p>{{comm.content}}</p>
            <p>{{comm.user}}</p>
            <p>{{comm.created_on}}</p>
            {% endif %}
        {% endfor %}
    </div>
    {% endblock content %}

我通过管理面板删除了 NewsPost 模型，一切正常，但是与此模型关联的 NewsPostImages 没有从“news/images/%Y/%m/%d”文件夹中删除，我该怎么办？

from django.db import models
from django_resized import ResizedImageField


class NewsPost(models.Model):
    article = models.CharField(max_length=180)
    poster = ResizedImageField(upload_to="news/posters/%Y/%m/%d", null=True, blank=True)
    news_field = models.TextField()
    pub_date = models.DateTimeField('date published')


class NewsPostImage(models.Model):
    news_post = models.ForeignKey(NewsPost, on_delete=models.CASCADE, default=None)
    image = models.ImageField(upload_to="news/images/%Y/%m/%d", null=True, blank=True)

我想写一个像收音机这样的网站：我有一个播放列表，我也可以编辑它：添加、删除或切换曲目（换句话说，我有完全的访问权限。）。用户只需分别收听正在播放的音乐，而无需编辑播放列表。出现了以下问题：

1. 如何以及在哪里更好地存储曲目？
2. 如何重现它们？
3. 是否可以在 Django 中结合 Angular 编写这个？