（任何建議將不勝感激）我有文章的模型，如class Articles(models.Model): restaurant = models.ForeignKey(Restaurant, on_delete=models.CASCADE , blank=True, null=True) articlename = models.CharField(max_length=50, null=False, blank=False) price = models.DecimalField(max_digits=10, decimal_places=2) category = models.ForeignKey(Categories, on_delete=models.CASCADE , blank=True, null=True)現在我想以“每個類別都將以數據庫對象形式的所有文章”之類的形式獲取數據例如我有 2 篇文章，1 篇是“article1 有 cat1”，第二篇是“article2 有 cat2” 現在我想獲取這樣的數據 在 djangodata:[ cat1:[{article1},{}] , cat2:[{article2}] ] 中有沒有類似的東西？group by categories直到現在我已經嘗試過這段代碼order_article = OrderArticle.objects.filter(order__order_number=id ,order__restaurant=restid) samearticle=[] for order_obj in order_article: if : #will check if article having cat already been created category={} category[order_obj.article.category.name]=order_obj samearticle.append(order_obj.article.category.name) else: samearticle[order_obj.article.category.name].append(order_obj)
2 回答
滄海一幻覺
TA貢獻1824條經驗 獲得超5個贊
假設您的 Categories 模型有一個名稱字段。您實際上可以遍歷類別并使用相關對象引用獲取所有相關文章
order_article_list = OrderArticle.objects.filter(order__order_number=id ,order__restaurant=restid)
data = {}
for order_article in order_article_list:
data[order_article.article.category.name] = order_article.article.category.articles_set.all()
德瑪西亞99
TA貢獻1770條經驗 獲得超3個贊
def index(request, category_slug=None):
category = None
categories = Category.objects.all()
articles = Article.objects.all()
if category_slug:
category = get_object_or_404(Category, slug=category_slug)
articles = articles.filter(category=categories)
context = {
'articles': articles,
'categories': categories,
'category': category,
}
那么在你看來
{% regroup articles by category as articles_by_category %}
{% for c in products_by_category %}
{% endfor %}
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