Question

嘿那里，

我在一个视图中传递两个应用模型时遇到了困难。我有2个应用程序：

后
作者

我的期望是，我想在Post视图中显示作者的头像，所以我可以将它包含在帖子循环中。

作者if (l.get(i) > 900)：

models.py

...

发布class Author(models.Model): avatar = models.ImageField(upload_to='images/%Y/%m/%d', verbose_name=u'Author Avatar', validators=[validate_image], blank=True, null=True) user = models.OneToOneField(User, on_delete=models.CASCADE) location = models.CharField(max_length=30, blank=True)：

views.py

当我在模板中调用这样的内容时，它不起作用。 from app_author.models import Author class PostList(ListView): model = Post template_name = 'app_blog/blog_homepage.html' context_object_name = 'post_list' paginate_by = 9 def get_context_data(self, **kwargs): context = super(PostList, self).get_context_data(**kwargs) context['post_hot'] = Post.objects.filter(misc_hot_post = True).order_by('-misc_created')[:1] context['post_list'] = Post.objects.filter(misc_published = True).order_by('-misc_created') context['author'] = Author.objects.all() # No need this line return context未显示：

{{ author.avatar }}

我的帖子应用{% for post in post_list %} <ul> <li>{{ post.title }}</li> # This is works just fine <li>{{ author.avatar }}</li> # This does not work at all <ul> {% endfor %}：

urls.py

任何帮助将不胜感激！提前谢谢！

此致

---更新---

这是我的帖子from . import views from django.conf import settings from app_blog.views import PostList, PostDetailView from django.conf.urls import include, url from django.conf.urls.static import static urlpatterns = [ url(r'^$', views.PostList.as_view(), name='post-list'), ] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

models.py

谢谢

---更新2 ---

解决

@Gagik＆amp; @Daniel回答解决了我的问题。我只需要使用此标记：

import datetime
from django import forms
from django.db import models
from django.conf import settings
from autoslug import AutoSlugField
from django.forms import ModelForm
from app_author.models import Author
from taggit.managers import TaggableManager
from django.contrib.auth.models import User
from django.core.exceptions import ValidationError
from django.template.defaultfilters import slugify

# CUSTOM FILE SIZE VALIDATOR
def validate_image(fieldfile_obj):
    filesize = fieldfile_obj.file.size
    megabyte_limit = 5
    if filesize > megabyte_limit*1024*1024:
        raise ValidationError("Max file size is %sMB" % str(megabyte_limit))

class Category(models.Model):
    # PRIMARY DATA
    id                      = models.AutoField(primary_key=True)
    category_name           = models.CharField(max_length=200, verbose_name=u'Category Name', blank=False, null=False)

    def __str__(self):
        return str(self.category_name)

class Post(models.Model):
    # PRIMARY DATA
    post_image              = models.ImageField(upload_to='images/%Y/%m/%d', verbose_name=u'Post Featured Image', validators=[validate_image], blank=True, null=True)
    post_author             = models.ForeignKey(Author, related_name="user_posts", null=True, blank=True)
    post_title              = models.CharField(max_length=200, verbose_name=u'Post Title', blank=False, null=False)
    post_sub_title          = models.CharField(max_length=200, verbose_name=u'Post Sub-Title', blank=False, null=False)
    post_category           = models.ForeignKey('Category', verbose_name=u'Post Category', on_delete=models.CASCADE)
    post_content            = models.TextField()
    post_tags               = TaggableManager()
    slug                    = AutoSlugField(populate_from='post_title')

    # MISC
    misc_created            = models.DateTimeField(default=datetime.datetime.now, null=True, blank=True)
    misc_modified           = models.DateTimeField(default=datetime.datetime.now, null=True, blank=True)
    misc_hot_post           = models.BooleanField(default=False)
    misc_published          = models.BooleanField(default=False)

    def __str__(self):
        return str(self.post_title)

    @models.permalink
    def get_absolute_url(self):
        return 'app_blog:post', (self.slug,)

我没有更改上面的任何代码。除了我不需要这一行：

{{ post.post_author.avatar }}

谢谢

Answer 1

您需要通过ForeignKey文件将Author和Post模型相互关联，例如：

class Post (models.Model):
    author = models.ForeignKey(Author)

然后，当您可以通过post.author。

访问您的头像

<强>更新

更新问题后更新答案。我认为你需要更新你的模板如下。使用post.post_author.avatar访问您需要的头像：

{% for post in post_list %}
<ul>
   <li>{{ post.title }}</li> # This is works just fine
   <li>{{ post.post_author.avatar }}</li> # This does not work at all
<ul>

{％endfor％}

请注意，您不需要在视图中拼命搜索作者。因此，您不需要拥有以下内容：

context['author'] = Author.objects.all() # This is where I expect the magic is

因为当你有ForeignKey时，你已经可以通过post对象访问Author了。

Answer 2

Gagik和JF的答案应该足以让你弄清楚该做什么。您的外键称为“post_author”，因此您应该在模板中使用：

{{ post.post_author.avatar }}

您无需获得所有作者，并将其传递到视图中的模板中。

如何在一个视图中传递多个应用程序的模型？ [django的]

2 个答案: