如何在django postgresql中上传geojson文件

from django.db import models

class GeoJSONFile(models.Model):
    file = models.FileField(upload_to='geojson_files/')

from django.shortcuts import render
from .forms import GeoJSONForm

def upload_geojson(request):
    if request.method == 'POST':
        form = GeoJSONForm(request.POST, request.FILES)
        if form.is_valid():
            geojson_file = form.cleaned_data['file']
            GeoJSONFile.objects.create(file=geojson_file)
    else:
        form = GeoJSONForm()
    return render(request, 'upload.html', {'form': form})

<!-- upload.html -->
<form method="post" enctype="multipart/form-data">
  {% csrf_token %}
  {{ form.as_p }}
  <button type="submit">Upload</button>
</form>

from django import forms

class GeoJSONForm(forms.Form):
    file = forms.FileField()

from django.urls import path
from .views import upload_geojson

urlpatterns = [
    path('upload/', upload_geojson, name='upload_geojson'),
]