其他模板未在我的基本模板中继承 FOR LOOP

Posted 2023-02-24

【中文标题】其他模板未在我的基本模板中继承 FOR LOOP

【英文标题】：Other templates are not inheriting FOR LOOP in my base template

【发布时间】：2017-07-08 07:49:27

【问题描述】：

循环实际上是用于导航。列出类别和在每个类别下销售或提供服务的商店。 请..我是 Django 和 Python 的新手。如果我得到这些东西的速度很慢，我很抱歉......谢谢

models.py

class ShopCategories(models.Model):
category = models.CharField(max_length=50, unique=True)
def __str__(self):
    return self.category

class NewShop(models.Model):
    category = models.ForeignKey(ShopCategories)
    main_image = models.FileField(null=True, blank=True)
    name = models.CharField(max_length=100, unique=True)
    tagline = models.CharField(max_length=50, default='Enter tagline here2')
    description = models.TextField(default='enter shop description')
    shop_image = models.FileField(null=True, blank=True)

views.py

def homepage(request):
   return render_to_response('index.html')

def basefile(request):
    cat1 = NewShop.objects.filter(category_id=1)
    cat2 = NewShop.objects.filter(category_id=2)
    cat3 = NewShop.objects.filter(category_id=3)
    cat4 = NewShop.objects.filter(category_id=4)
    name1 = ShopCategories.objects.filter(id=1)
    name2 = ShopCategories.objects.filter(id=2)
    name3 = ShopCategories.objects.filter(id=3)
    name4 = ShopCategories.objects.filter(id=4)

    return  render_to_response('base.html', 'Shop_cat1':cat1, 'Shop_cat2':cat2, 'Shop_cat3':cat3,
                                        'Shop_cat4':cat4,'shop_name1':name1, 'shop_name2':name2,
                                        'shop_name3':name3, 'shop_name4':name4)

base.html

<ul class="nav navbar-nav">
  <li class="current-menu-item">
     <ul class="nav navbar-nav">
        <li class="current-menu-item">
           <a href="/">ENTOURAGE MALL</a>
        </li>
        <li class="dropdown pi-mega-fw menu-item-has-children">
           <a href="#" data-toggle="dropdown" class="dropdown-toggle" role="button">SHOPS</a>
     <ul class="dropdown-menu">
        <li>
           <div class="pi-mega-content">
              <div class="row">
                 <div class="col-md-3 pi-mm-col">
                    <ul class="pi-mm-list">
                    % for shop in shop_name1 %
                       <li>
                          <h3>  shop </h3>
                      </li>
                    % endfor %
                    % for cat in Shop_cat1  %
                       <li><a href="#"> cat </a></li>
                    % endfor %
                   </ul>
                </div>
                <div class="col-md-3 pi-mm-col">
                    <ul class="pi-mm-list">
                    % for shop in shop_name2 %
                       <li>
                          <h3>  shop </h3>
                      </li>
                    % endfor %
                    % for cat in Shop_cat2  %
                       <li><a href="#"> cat </a></li>
                    % endfor %
                   </ul>
                </div>
                <div class="col-md-3 pi-mm-col">
                    <ul class="pi-mm-list">
                    % for shop in shop_name3 %
                       <li>
                          <h3>  shop </h3>
                      </li>
                    % endfor %
                    % for cat in Shop_cat3  %
                       <li><a href="#"> cat </a></li>
                    % endfor %
                   </ul>
                </div>
             </div>
          </div>
       </li>
    </ul>
 </li>
 <li class="menu-item">
    <a href="contact" role="button">ENTOURAGE LOUNGE</a>
 </li>
 <li class="menu-item">
    <a href="contact" role="button">About MALL</a>
 </li>
 <li class="menu-item">
    <a href="contact" role="button">BLOG</a>
 </li>
</ul>

index.html

% extends "base.html" %

% block title % This is Homepage % endblock title %

网址.py

urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^$', views.homepage),
url(r'^base/', views.basefile)
]

if settings.DEBUG:

urlpatterns += static(settings.STATIC_URL, document_root= settings.STATIC_ROOT)
urlpatterns += static(settings.MEDIA_URL, docuemt_root= settings.MEDIA_ROOT)

它在 base.html 中运行良好。但是当我在索引或其他模板中 % extends base.html % 时。模板加载得很好，但 FOR 循环不起作用。我到底做错了什么？

【问题讨论】：

您在后端实现shop_name1 的上下文？

@SancaKembang 我真的不明白你的意思。

对于 shop_name1 中的 shop_name1？有趣的循环

@AlexanderTyapkov .. 我只是 django 的初学者。我真的只是在学习很多新东西。我最近刚刚更改了您上面提到的变量名称.. 谢谢！！！... 请您帮我处理 FOR 循环...

@DanielKilanko 好的，只需提供更多代码，例如正在使用的视图以及模板的完整版本

【参考方案1】：

您应该像在基本文件视图中一样在主页视图中提供上下文：

def homepage(request):
    cat1 = NewShop.objects.filter(category_id=1)
    cat2 = NewShop.objects.filter(category_id=2)
    cat3 = NewShop.objects.filter(category_id=3)
    cat4 = NewShop.objects.filter(category_id=4)
    name1 = ShopCategories.objects.filter(id=1)
    name2 = ShopCategories.objects.filter(id=2)
    name3 = ShopCategories.objects.filter(id=3)
    name4 = ShopCategories.objects.filter(id=4)

    return render_to_response('index.html', 'Shop_cat1':cat1, 'Shop_cat2':cat2, 'Shop_cat3':cat3,
                                        'Shop_cat4':cat4,'shop_name1':name1, 'shop_name2':name2,
                                        'shop_name3':name3, 'shop_name4':name4)