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djangoでお料理日記のアプリ開発をしている中で、画像投稿欄を作成したのですがファイルを選択し投稿ボタンを押してもページは変わらず投稿することができません。解決策が見当たらないので質問させて下さい。

発生している問題・エラーメッセージ

エラーメッセージはなく、ローカルサーバーは問題なく動きます。画像投稿機能を付け始めてからなので、class PhotoModel・forms.pyの作成、post_form.html・admin.py・models.py・views.pyへの追加に原因があると思います。

補足情報

models.py

from django.db import models
from django.urls import reverse_lazy

class Category(models.Model):
    name = models.CharField(
        max_length=255,
        blank=False,
        null=False,
        unique=True)

    def __str__(self):
        return self.name

class Tag(models.Model):
    name = models.CharField(
        max_length=255,
        blank=False,
        null=False,
        unique=True)

    def __str__(self):
        return self.name

class PhotoModel(models.Model):
    image = models.ImageField(upload_to='images')

    def __str__(self):
        return self.image.url

class Post(models.Model):
    created = models.DateTimeField(
        auto_now_add=True,
        editable=False,
        blank=False,
        null=False)

    updated = models.DateTimeField(
        auto_now=True,
        editable=False,
        blank=False,
        null=False)

    title = models.CharField(
        max_length=255,
        blank=False,
        null=False)

    body = models.TextField(
        blank=True,
        null=False)

    category = models.ForeignKey(
        Category,
        on_delete=models.CASCADE)

    tags = models.ManyToManyField(
        Tag,
        blank=True)

    PhotoModel = models.ImageField(
        upload_to='media/images',
        verbose_name='料理の写真',
        null=True,
    )

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse_lazy("detail", args=[self.id])

forms.py

from django import forms
from .models import PhotoModel

class PhotoForm(forms.ModelForm):

    class Meta:
        model = PhotoModel
        fields = '__all__'

post_form.html

{% extends "blog/base.html" %}

{% block main %}
<h2>新規投稿</h2>
<form method="post">
    {% csrf_token %}
    {{ form.as_p }}
    <input type="submit" value="投稿" class="btn btn-primary" />
</form>

{% for photo in photos %}
    <a href="{{ photo.image.url }}">{{ photo }}</a>
    <hr>
{% endfor %}

{% endblock %}

admin.py

from django.contrib import admin
from . import models
from .models import PhotoModel

@admin.register(models.Category)
class CategoryAdmin(admin.ModelAdmin):
    pass

@admin.register(models.Tag)
class TagAdmin(admin.ModelAdmin):
    pass

@admin.register(models.Post)
class PostAdmin(admin.ModelAdmin):
    pass

@admin.register(models.PhotoModel)
class imageAdmin(admin.ModelAdmin):
    pass

views.py

from django.views.generic import ListView, DetailView
from .models import Post
from .models import PhotoModel
from django.views import generic
from .forms import PhotoForm

class Index(ListView):
    model = Post

# 個別
class Detail(DetailView):
    model = Post

from django.views.generic.edit import CreateView

class Create(CreateView):
    model = Post
    fields = ["title", "body", "category", "tags", "PhotoModel"]

from django.views.generic.edit import UpdateView

class Update(UpdateView):
    model = Post
    fields = ["title", "body", "category", "tags", "PhotoModel"]

from django.views.generic.edit import DeleteView

class Delete(DeleteView):
    model = Post
    success_url = "/"

class Photo(generic.CreateView):
    model = PhotoModel
    form_class = PhotoForm
    template_name = 'uploadapp/upload.html'
    success_url = '/'

    def get_context_data(self, **kwargs):
        context = super(Photo, self).get_context_data(**kwargs)
        context["photos"] = PhotoModel.objects.all()
        return context