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私はdjangoで開発を始めたばかりで、行き詰まっています...

私は私のmodels.pyを持っています:

 from django.db import models
class Meeting(models.Model):
    title = models.CharField(max_length = 200)
    pub_date = models.DateTimeField('date published')
    latCoord = models.FloatField(default = 0.0)
    longCoord = models.FloatField(default = 0.0)

    def __unicode__(self):
        return self.title

class Location(models.Model):
    address = models.CharField(max_length = 200)
    pub_date = models.DateTimeField('date published')
    participants = models.IntegerField()
    latCoord = models.FloatField()
    longCoord = models.FloatField()
    meeting = models.ForeignKey(Meeting)

私のurls.py:

from django.conf.urls import patterns, include, url
    urlpatterns = patterns('',
                       url(r'^(?P<meeting_id>\d+)/$', 'meeting.views.meeting'),
                       url(r'^add_location/(?P<meeting_id>\d+)/$', 'meeting.views.add_location'),
                       url(r'^create/$', 'meeting.views.create'),
                       )

そして私のviews.py：

from django.shortcuts import render_to_response
from meeting.models import Meeting, Location
from forms import MeetingForm, LocationForm
from django.http import HttpResponseRedirect
from django.core.context_processors import csrf
from django.utils import timezone
from django.core import serializers
import math
import encodeUrl
def meeting(request, meeting_id = 1):
    l = Location.objects.filter(meeting_id = meeting_id)
    ...
    ...

    return render_to_response('meeting.html', 
                              {'meeting': Meeting.objects.get(id = meeting_id), 'data':data})

def create(request):
    print "test"
    if request.POST:
        form = MeetingForm(request.POST)
        if form.is_valid():
            form.save()
            return HttpResponseRedirect('/meetings/%s' % len(Meeting.objects.all()))
    else:
        form = MeetingForm()
    args = {}
    args.update(csrf(request))

    args['form'] = form
    return render_to_response('create_meeting.html', args)

これまでのところ、すべて正常に動作しています。すべての新しいミーティングの URL は、meeting/meeting_id です。ここで、URL を数値ではなく文字列にしたいと考えています。だから私はコードを変更しました：

urls.py:

    from django.conf.urls import patterns, include, url
    urlpatterns = patterns('',
                           url(r'^(?P<meeting_id_str>\w+)/$', 'meeting.views.meeting'),
                           url(r'^add_location/(?P<meeting_id_str>\w+)/$', 'meeting.views.add_location'),
                           url(r'^create/$', 'meeting.views.create'),
                           )

そしてviews.py

    def meeting(request, meeting_id_str = 'b'):
    #encode the string to an integer
    meeting_id = encodeUrl.alphaID(meeting_id_str, True)
    l = Location.objects.filter(meeting_id = meeting_id)
    ...
    ...
    ...    
    return render_to_response('meeting.html', 
                              {'meeting': Meeting.objects.get(id = meeting_id), 'data':data})

def create(request):
    print "test"
    if request.POST:
        form = MeetingForm(request.POST)
        if form.is_valid():
            form.save()
            meeting_id_str = encodeUrl.alphaID(len(Meeting.objects.all()), False)
            return HttpResponseRedirect('/meetings/%s' % meeting_id_str)
    else:
        form = MeetingForm()
    args = {}
    args.update(csrf(request))

    args['form'] = form
    return render_to_response('create_meeting.html', args)

エンコーディングが機能し、たとえば meeting/b などの URL を呼び出すと、meeting/1 に変更されますが、新しい会議を作成しようとすると、「クエリが存在しません」という例外が発生します

 Request Method:    GET
Request URL:    http://127.0.0.1:8000/meetings/create/
Django Version:     1.5.1
Exception Type:     DoesNotExist
Exception Value:    

Meeting matching query does not exist. Lookup parameters were {'id': 3945298144L}

Exception Location:     C:\Python27\lib\site-packages\django\db\models\query.py in get, line 389
Python Executable:  C:\Python27\python.exe
Python Version:     2.7.5

すべてのヒントに感謝します、ありがとう

4

2 に答える 2

0

create最初のパターン --r'^(?P<meeting_id_str>\w+)/$'は "create/" にも一致するため、を入力することはありません。作成パターンを移動して、リストの最初に配置する必要があります。

于 2013-11-08T14:37:51.473 に答える