Python 如何从Django中上载的GPX文件将数据保存到PostGis数据库？

我有以下问题：我的目标是建立一个可以显示在地图上的gps轨迹档案。（使用Python、Django、PostgreSQL和PostGIS） 我发现了一个教程：文件上传工作正常，但我不知道如何将文件中的数据保存到数据库并将其用作模型。 我的代码：

forms.py

from django import forms
from .models import gpxFile


class UploadGpxForm(forms.ModelForm):

    title = forms.CharField(max_length=100)
    gpx_file = forms.FileField(required='FALSE')

    class Meta:
        model = gpxFile
        fields = ['title', 'gpx_file']

models.py

from django.contrib.gis.db import models
from django.contrib import admin
from django.contrib.gis import admin as geoadmin
from django.db.models.manager import Manager




def GPX_Folder(instance, filename):
    return "uploaded_gpx_files/%s" % (filename)

class gpxFile(models.Model):
    title = models.CharField("Title", max_length=100)
    gpx_file = models.FileField(upload_to=GPX_Folder, blank=True)

    def __unicode__(self):
        return self.title

class GPXPoint(models.Model):
    name = models.CharField("Name", max_length=50, blank=True)
    description = models.CharField("Description", max_length=250, blank=True)
    gpx_file = models.ForeignKey(gpxFile, on_delete=models.CASCADE)
    point = models.PointField()
    objects = models.Manager()

    def __unicode__(self):
        return unicode(self.name)

class GPXTrack(models.Model):
    track = models.MultiLineStringField()
    gpx_file = models.ForeignKey(gpxFile, on_delete=models.CASCADE)
    objects = models.Manager()

views.py

from django.shortcuts import render
from .forms import UploadGpxForm, Up
from .models import GPXPoint, GPXTrack, gpxFile
from django.http import HttpResponseRedirect
from django.contrib.gis.geos import Point, LineString, MultiLineString
from django.conf import settings

import gpxpy
import gpxpy.gpx


def home(request):
    #context = {
        #'notes': Note.objects.all()
    #}
    return render(request, 'gpsarchive/home.html')




def SaveGPXtoPostGIS(f, file_instance):
    
    gpx_file = open(settings.MEDIA_ROOT+ '/uploaded_gpx_files'+'/' + f.name)
    gpx = gpxpy.parse(gpx_file)

    if gpx.waypoints:        
        for waypoint in gpx.waypoints:            
            new_waypoint = GPXPoint()
            if waypoint.name:
                new_waypoint.name = waypoint.name
            else:
                new_waypoint.name = 'unknown'
            new_waypoint.point = Point(waypoint.longitude, waypoint.latitude)
            new_waypoint.gpx_file = file_instance
            new_waypoint.save()

    if gpx.tracks:
        for track in gpx.tracks:
            print("track name:" +str(track.name))
            new_track = GPXTrack()
            for segment in track.segments:
                track_list_of_points = []                
                for point in segment.points:
                    
                    point_in_segment = Point(point.longitude, point.latitude)
                    track_list_of_points.append(point_in_segment.coords)

                new_track_segment = LineString(track_list_of_points)
            
            new_track.track = MultiLineString(new_track_segment)
            new_track.gpx_file = file_instance    
            new_track.save()


def upload_gpx(request):
    if request.method == 'POST':
        file_instance = gpxFile()
        form = UploadGpxForm(request.POST, request.FILES)
        if form.is_valid():    
            form.save()
            SaveGPXtoPostGIS(request.FILES['gpx_file'], file_instance)

            return HttpResponseRedirect('success/')

    else:
        form = UploadGpxForm()

    return render(request, 'gpsarchive/form.html', {'form':form})

def upload_success(request):
    return render(request, 'gpsarchive/success.html')

正如我前面提到的，文件上载可以正常工作，但不幸的是出现了以下错误： [Errno 2]没有这样的文件或目录：'/upload\u gpx\u files/3359239.gpx'

---

我不知道是什么原因导致了这个错误，因为文件和目录都存在，如果有任何建议，我将万分感激

你找到了吗？不幸的是，没有，最后我决定存档上传的文件，并在用户每次想查看他的曲目时解析它。不那么优雅，但你有没有想过？不幸的是，没有，最后我决定存档上传的文件，并在每次用户想要查看他的曲目时解析它。不那么优雅但很管用