我想在新用戶使用 Signals 注冊時向用戶個人資料顯示默認圖片，而無需從 Django 管理員手動進行

Question

每當使用信號創建新用戶時，我想加載用戶的默認圖片。 但它沒有加載默認圖片。 我不想從 Django 管理員手動執行此操作，我希望在應用程序中創建新用戶時執行此操作。

模型.py

from django.db import models
from django.contrib.auth.models import User


class userprofile(models.Model):
    user = models.OneToOneField(User,on_delete = models.CASCADE)
    profilepic = models.ImageField(default='pp.png',upload_to='profile_pic',blank = True)

forms.py

from django import forms
from django.contrib.auth.models import User
from django.contrib.auth.forms import UserCreationForm
from .models import userprofile



class ProfileUpdateForm(forms.ModelForm):
    class Meta:
        model = userprofile
        fields = ['profilepic',]

視圖.py

@login_required
def profile(request):    
    if request.method == 'POST':
        p_form = ProfileUpdateForm(request.POST,request.FILES,instance=request.user.userprofile)
        if p_form.is_valid():
            p_form.save()        
            return render(request,'profile.html')
    else:
        p_form = ProfileUpdateForm(instance=request.user.user)

    context = {
        'p_form': p_form        
        }

    return render(request,'profile.html',context)

簡介.html

<form method ="POST" class="sm:w-1/3 text-center sm:pr-8 sm:py-8" enctype="multipart/form-data" >
            {% csrf_token %}
            <img id="profile_pic" alt="team" class="flex-shrink-0 rounded-lg w-full h-56 object-cover object-center mb-4" src="{{user.userprofile.profilepic.url}}">
            {{ p_form|crispy }}
            <br>
            <input id="file-input" style="padding: 8px 93px;" class="text-white bg-green-500 border-0 py-2 px-8 focus:outline-none hover:bg-green-700 rounded text-lg" type="submit" value="Upload">
</form>

信號間諜

from django.db.models.signals import post_save
from django.contrib.auth.models import User
from django.dispatch import receiver
from .models import userprofile


@receiver(post_save, sender=User)
def create_profile(sender, instance, created, **kwargs):
    if created:
        userprofile.objects.create(user=instance)


@receiver(post_save, sender=User)
def save_profile(sender, instance, **kwargs):
    instance.profile.save()

應用程序.py

from django.apps import AppConfig


class HomepageConfig(AppConfig):
    name = 'Homepage'


    def ready(self):
        import users.signals

Answer 1

首先加載表單外的圖像。 然后在媒體內部和上傳個人資料圖片的文件夾外部添加默認圖像。

如您所見，它位於媒體文件夾的根目錄中。