Question

我正在尝试创建一个学生注册页面，以允许学生上传个人资料照片。我正在使用Django User模型和与StudentProfile有OneToOne关系的User模型。这是我的代码：

student \ models.py：

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


class StudentProfile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE,)
    avatar = models.ImageField(upload_to='student_profile/', null=True, blank=True)

    def __str__(self):
        return self.user.username

students / form.py：

from django import forms


class ImageUploadForm(forms.Form):
    profile_photo = forms.ImageField()

eLearning / views.py：

from django.contrib.auth import authenticate, login, get_user_model
from django.http import HttpResponse
from django.shortcuts import render, redirect

from .forms import LoginForm, RegisterForm
from students.forms import ImageUploadForm
from students.models import StudentProfile

User = get_user_model()


def register_page(request):
    register_form = RegisterForm(request.POST or None)
    photo_upload_form = ImageUploadForm(request.POST, request.FILES)

    context = {
        "register_form": register_form,
        "photo_upload form": photo_upload_form
    }
    if register_form.is_valid():
        # print(register_form.cleaned_data)
        username = register_form.cleaned_data.get("username")
        first_name = register_form.cleaned_data.get("first_name")
        last_name = register_form.cleaned_data.get("last_name")
        email = register_form.cleaned_data.get("email")
        password = register_form.cleaned_data.get("password")

        new_user = User.objects.create_user(
            username, email, password,
            first_name=first_name,
            last_name=last_name,
        )

        if photo_upload_form.is_valid():
            user = username
            avatar = photo_upload_form.cleaned_data.get("profile_photo")
            new_user_profile = StudentProfile.objects.create(user, avatar)

        print(new_user)
    return render(request, "auth/register.html", context)

auth / register.html：

{% extends "base.html" %}
{% load static %}

{% block content %}

{% load crispy_forms_tags %}

<div class="container">
    <div class="row my-4">
        <div class="col-5">
            <form action="" method="post" class="form-control">
                {% csrf_token %}
                {{ register_form|crispy }}
            <input type="submit" class="btn btn-default" value="Submit">
            </form>
        </div>
        <div class="col-5">
            <form method="post" enctype="multipart/form-data" class="form-control">
                {% csrf_token %}
                 <input id="id_image" type="file" class="my-2" name="image">
                {{ photo_upload_form|crispy }}
            </form>
        </div>
    </div>
</div>
{% endblock %}

我面临2个问题：

1）ImageUploadForm未呈现到register.html

2）未创建StudentProfile。 User创建良好。

我还尝试将ModelForm的表单替换为ImageUploadForm，但是我得到NULL constraint的{{1}}，因为Django与{{1 }}是。

我一直在研究Stack Overflow。所有解决方案都是关于如何将用户图像上传到Django admin的，但是我还没有找到任何显示如何在注册过程中将上传的图像与User模型相关联的信息。如果这是一个重复的问题，请原谅我。谢谢。

Answer 1

在您的eLearning/views.py:中您传递到html页面的上下文_丢失

 context = {
        "register_form": register_form,
        "photo_upload form": photo_upload_form
    }

这就是ImageUploadForm无法呈现到register.html

的原因

应该像

context = {
        "register_form": register_form,
        "photo_upload_form": photo_upload_form
    }

Answer 2

所以我知道了。真正的问题是register.html代码。提交按钮仅适用于register_form，因此照片上传表单未通过验证，因此未创建学生个人资料条目。这是更新的代码：

eLearning / views.py：

from students.forms import ImageUploadForm
from students.views import upload_pic

     def register_page(request):
            register_form = RegisterForm(request.POST or None)
            photo_upload_form = ImageUploadForm(request.POST, request.FILES)

            context = {
                "register_form": register_form,
                "photo_upload_form": photo_upload_form
            }
            if register_form.is_valid():
                username = register_form.cleaned_data.get("username")
                first_name = register_form.cleaned_data.get("first_name")
                last_name = register_form.cleaned_data.get("last_name")
                email = register_form.cleaned_data.get("email")
                password = register_form.cleaned_data.get("password")

                new_user = User.objects.create_user(
                    username, email, password,
                    first_name=first_name,
                    last_name=last_name,
                )


                upload_pic(request, photo_upload_form, username=username)

            return render(request, "auth/register.html", context)

students / views.py：

from django.contrib.auth import get_user_model
from django.http import HttpResponseRedirect
from django.shortcuts import render, redirect, HttpResponse

from .models import StudentProfile
from .forms import ImageUploadForm

def upload_pic(request, form, username):
        if request.method == 'POST':
            if form.is_valid():
                User = get_user_model()
                user = User.objects.get(username=username)
                avatar = form.cleaned_data.get('profile_photo')
                new_user_profile = StudentProfile.objects.create(user=user, avatar=avatar)
                new_user_profile.save()

register.html：

{% extends "base.html" %}
{% load static %}

{% block content %}

{% load crispy_forms_tags %}

<div class="container">
    <div class="row my-4">
        <div class="col-5">
            <form action="" method="post" enctype="multipart/form-data" class="form-control">
                {% csrf_token %}
                {{ register_form|crispy }}
                {{ photo_upload_form|crispy }}
                <input type="submit" class="btn btn-default" value="Submit">
            </form>
        </div>
    </div>      
</div>

{% endblock %}

您必须确保enctype="multipart/form-data"位于标签内，否则图像上传表单将无法通过验证。我还建议将图像验证方法添加到您的form.py。萨钦之前指出的内容：image form and validation。希望这可以帮助。

通过上传表单将图像上传到Django用户个人资料

2 个答案: