我正在研究多用戶rss閱讀器。我想限制帖子的顯示只限於未讀的帖子。我已經設法在我的單個「feed」視圖中做到這一點,但我無法弄清楚如何在多個feed中也做同樣的「category」視圖。視圖和模板中的Django模型關係
我一直在試圖像這裏https://docs.djangoproject.com/en/1.5/topics/db/queries/#spanning-multi-valued-relationships但對我來說
我應該改變我的「類別」視圖或代碼模板代碼沒有奏效?如果是的話,你會怎麼做呢?
謝謝! -S
車型
class UserCategory(models.Model):
name = models.CharField(unique=False, max_length=64)
user = models.ForeignKey(User)
slug = AutoSlugField(populate_from='name', always_update='True', unique_with='user')
class Feed(models.Model):
feed_url = models.URLField(unique=True)
default_title = models.CharField(max_length=64, blank=True)
link = models.URLField(blank=True)
class UserFeed(models.Model):
feed = models.ForeignKey(Feed)
title = models.CharField(max_length=64)
category = models.ForeignKey(UserCategory)
user = models.ForeignKey(User)
slug = AutoSlugField(populate_from='title', always_update='True', unique_with='user')
class Post(models.Model):
feed = models.ForeignKey(Feed)
title = models.CharField(max_length=256)
content = models.TextField()
link = models.URLField(max_length=512)
class ReadPost(models.Model):
user = models.ForeignKey(User)
post = models.ForeignKey(Post)
意見
def feed(request, user_feed_slug):
user_feed = get_object_or_404(UserFeed.objects.filter(slug=user_feed_slug, user=request.user))
read_post = ReadPost.objects.filter(user=request.user).values_list('post')
posts = Post.objects.select_related().filter(feed=user_feed.feed).exclude(id__in=read_post)
def category(request, user_category_slug):
user_category = get_object_or_404(UserCategory.objects.filter(slug=user_category_slug, user=request.user))
模板
feed
{% for post in posts %}
{{ post.title }}
{% endfor %}
category
{% for feed in user_category.userfeed_set.all %}
{{ feed.title }}
{% for post in feed.feed.post_set.all %}
{{ post.title }}
{{ post.content }}
{% endfor %}
{% endfor %}
我不熟悉自定義過濾器。我不確定如何正確地實現它?我應該把它放在這裏:{%for feed in user_category.userfeed_set.all | unread%}或這裏{%for feed in feed.feed.post_set.all | unread%} ??還應該加上一些額外的參數,如未讀:帖子?我正在嘗試所有這些選項,但它似乎沒有工作:( – sikor
您必須將此過濾器應用於發佈queryset並另外傳遞用戶閱讀帖子。因此,在此示例中,它可能是這樣的:'{%for post在feed.feed.post_set.all | unread:read_posts%}'。 –
經過進一步調整就像一個魅力!Dzieki :) – sikor