Django-cms/Django SingleRelatedObjectDescriptor 而不是对象本身

Question

我正在尝试为 django-cms 制作一个插件，但在将我的配置传递给 CMSPluginBase class.

时遇到问题

这是我的 models.py;

from django.db import models
from mptt.models import MPTTModel, TreeForeignKey
from cms.models.pluginmodel import CMSPlugin

class Section(MPTTModel):
    name = models.CharField(max_length=25, unique=True)
    parent = TreeForeignKey('self', null=True, blank=True, related_name='children', db_index=True)

    class MPTTMeta:
        order_insertion_by = ['name']

    def __str__(self):
        return self.name


class SectionConfig(CMSPlugin):
    title = models.CharField(default="Usefull Links", max_length=25)
    root_shown = models.ForeignKey('Section')

我在访问 root_shown

的对象引用时遇到问题

我正在尝试这样的事情；

from cms.plugin_base import CMSPluginBase
from cms.plugin_pool import plugin_pool
from cms.models.pluginmodel import CMSPlugin
from django.utils.translation import ugettext_lazy as _
from links_plugin.models import Section, SectionConfig

class LinksPlugin(CMSPluginBase):
    name = _("Links Tree Plugin")
    model = SectionConfig
    render_template = "links.html"
    cache = False

    def render(self, context, instance, placeholder):
        context['instance'] = instance
        context['Sobj'] = self.model.sectionconfig
        return context

plugin_pool.register_plugin(LinksPlugin)

我想用 context['Sobj'] = self.model.sectionconfig 检索实际对象，但我得到的似乎是对对象的引用，而不是对象本身。

这是我的页面显示的内容；

django.db.models.fields.related.SingleRelatedObjectDescriptor object at 0x3acb790

如何直接访问对象？

Answer 1

在您的插件中，您应该通过 render 的 instance 参数访问对象字段，而不是 self.model。像这样：

from cms.plugin_base import CMSPluginBase
from cms.plugin_pool import plugin_pool
from cms.models.pluginmodel import CMSPlugin
from django.utils.translation import ugettext_lazy as _
from links_plugin.models import Section, SectionConfig

class LinksPlugin(CMSPluginBase):
    name = _("Links Tree Plugin")
    model = SectionConfig
    render_template = "links.html"
    cache = False

    def render(self, context, instance, placeholder):
        context['instance'] = instance
        context['Sobj'] = instance.sectionconfig
        return context

plugin_pool.register_plugin(LinksPlugin)

Django-cms/Django SingleRelatedObjectDescriptor 而不是对象本身

Django-cms/Django SingleRelatedObjectDescriptor instead of object itself

django

django-models

django-cms