Question

在我的Django网站上，我有两个模型 - 一个是Project，用户可以创建，一个是Access，用户可以在其中添加其他用户以访问项目。 Access模型包含存储其他用户的manytomanyfield。我可以添加用户并从该字段中删除用户，它在整个站点范围内工作（即如果我将用户添加到项目中，然后登录该用户的帐户，我可以看到它）但是如果我添加多个用户合作者，我将开始在项目流中看到该项目的多次迭代。在我看来，Django向我展示了access_list中每个用户的项目，而不是一次。

Models.py：

class Project(models.Model):
project_name = models.CharField(max_length=200)
project_description = models.TextField(null=True, blank=True)
project_thumbnail = models.FileField(upload_to=get_upload_file_name, null=True, blank=True)
project_pubdate = models.DateTimeField(default=timezone.now)
created_by = models.ForeignKey(User)

def __unicode__(self):
    return self.project_name

def save(self):
    if not self.id and not self.project_description:
            return

    super(Project, self).save()
    Access.objects.get_or_create(project=self)
    if self.project_thumbnail:
            size = 200, 200
            image = Image.open(self.project_thumbnail)
            image.thumbnail(size, Image.ANTIALIAS)
            fh = storage.open(self.project_thumbnail.name, "w")
            format = 'png'  # You need to set the correct image format here
            image.save(fh, format)
            fh.close()

def get_project_thumbnail(self):
    thumb = str(self.project_thumbnail)
    if not settings.DEBUG:
            thumb = thumb.replace('assets/', '')

    return thumb

class Access(models.Model):
    project = models.ForeignKey(Project)
    access_list = models.ManyToManyField(User)
    pubdate = models.DateTimeField(default=timezone.now)

Views.py：

@login_required 
def projects(request):
    thisuser = request.user

    if Access.objects.filter(Q(access_list=thisuser) | Q(project__created_by=thisuser)).exists():
        projects_by_username = Access.objects.filter(Q(access_list=thisuser) | Q(project__created_by=thisuser)).order_by('-project__project_pubdate')
    else:
        projects_by_username = None

    return render_to_response('projects.html',
                                {'projects_by_username': projects_by_username,
                                'user': thisuser })

projects.html：

{% for project in projects_by_username %}

<table width="100%" cellpadding="5">
  <tr>
    <td width="25%" rowspan="3"><a href="/projects/get/{{ project.project.id }}">
{% if project.project.project_thumbnail %}
    <img src="{% get_static_prefix %}{{project.project.project_thumbnail}}" width="150" /></td>
{% endif %}
    </a></td>
    <td width="75%" valign="top"><div class="heading16px"><a href="/projects/get/{{ project.project.id }}">{{ project.project.project_name }}</a></div></td>
  </tr>
  <tr>
    <td><a href="/projects/get/{{ project.project.id }}">{{ project.project.project_description }}</a></td>
  </tr>
  <tr>
    <td>&nbsp;</td>
  </tr>
</table>

{% endfor %}

Django Manytomanyfield多次返回同一个项目

0 个答案: