我需要将项目数推到模板上,以使其具有数量数量的自适应网站。
在型号中。
models.py
from __future__ import absolute_import, unicode_literals
from django.db import models
from wagtail.wagtailcore.models import Page
from wagtail.wagtailimages.models import Image
from wagtail.wagtailcore.fields import RichTextField
from wagtail.wagtailadmin.edit_handlers import FieldPanel
from wagtail.wagtailimages.edit_handlers import ImageChooserPanel
class HomePage(Page):
auteur = models.CharField(max_length=250,default='Luc Simard')
subpage_types = ['LivreDesc']
content_panels = Page.content_panels + [
FieldPanel('auteur', classname="full"),
]
class LivreDesc(Page):
note = models.CharField(max_length=25,null=True,blank=True,)
resume = RichTextField(blank=True, verbose_name="Résumé")
couverture = models.ForeignKey(
'wagtailimages.Image',
null=True,
blank=True,
on_delete=models.SET_NULL, verbose_name="Couverture du livre")
parent_page_type = ['HomePage']
subpage_types = []
content_panels = Page.content_panels + [
FieldPanel('note'),
FieldPanel('resume', classname="full"),
ImageChooserPanel('couverture'),
]
def get_context(self, request):
context = super(LivreDesc, self).get_context(request)
context['nb_livres'] = LivreDesc.objects.all().count()
return context
在主页模板中,我添加了此内容,但我看不到任何东西
{{ nb_livres }}
如果要在主页模板中可用该变量,则需要在HomePage
模型上覆盖get_context
方法,而不是LivreDesc
。