Django：试图从两个视图中获取数据以显示在一个索引页面上

Question

我正在尝试在我的索引页面上以两个不同的视图显示来自两个不同应用的内容。

我为我的项目创建了一个 views.py 来处理索引页面，我正在尝试将我的两个应用程序中的模型实例连接到它。我没有收到任何错误，但是除了 base.html 中的内容之外，我无法显示任何内容。

这是代码以及图片，以显示正在发生的事情与我正在尝试做的事情。

项目views.py：

from django.shortcuts import render
from colorsets.models import ColorSet
from adminpanel.models import Widget
from django.utils import timezone

from django.contrib.auth import authenticate,login,logout
from django.http import HttpResponseRedirect, HttpResponse
from django.core.urlresolvers import reverse,reverse_lazy

def home(request, template='index.html'):
    context = {
        'widget': ColorSet.objects.all(),
        'color_set': Widget.objects.all(),
        }
    return render(request, template, context)

项目 urls.py:

"""colors URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see:
    https://docs.djangoproject.com/en/1.11/topics/http/urls/
Examples:
Function views
    1. Add an import:  from my_app import views
    2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
Class-based views
    1. Add an import:  from other_app.views import Home
    2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
Including another URLconf
    1. Import the include() function: from django.conf.urls import url, include
    2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
"""
from django.conf.urls import url
from django.contrib import admin
from django.conf.urls import include
from accounts import views
from colorsets import views
from colors import views

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^$',views.home,name='index'),
    url(r'^accounts/',include('accounts.urls',namespace='accounts')),
    url(r'^colorsets/',include('colorsets.urls',namespace='colorsets')),
    url(r'^adminpanel/',include('adminpanel.urls',namespace='adminpanel')),
]

颜色集应用程序 urls.py:

from django.conf.urls import url
from colorsets import views

app_name = 'colorsets'

urlpatterns = [
    url(r'^new/$',views.CreateColorSetView.as_view(),name='new_color'),
    url(r'delete/(?P<pk>\d+)/$',views.DeletePost.as_view(),name='delete'),
]

管理面板 urls.py:

from django.conf.urls import url
from adminpanel import views

app_name = 'adminpanel'

urlpatterns = [
    url(r'^widgets/',views.SettingsListView.as_view(),name='widgets'),
    url(r'^new/$',views.CreateWidgetView.as_view(),name='create-widget'),
    url(r'^delete/$',views.DeleteWidget.as_view(),name='delete-widgets'),
]

管理面板应用views.py：

from django.shortcuts import render
from adminpanel.forms import WidgetForm
from adminpanel.models import Widget
from django.utils import timezone

from django.contrib.auth import authenticate,login,logout
from django.http import HttpResponseRedirect, HttpResponse
from django.core.urlresolvers import reverse,reverse_lazy
from django.contrib.auth.decorators import login_required
from django.contrib.auth.mixins import LoginRequiredMixin
from braces.views import SelectRelatedMixin
from django.views.generic import (TemplateView,ListView,
                                    DetailView,CreateView,
                                    UpdateView,DeleteView)

# Create your views here.
class CreateWidgetView(LoginRequiredMixin,CreateView):
    login_url = '/login/'
    redirect_field_name = 'index.html'
    form_class = WidgetForm
    model = Widget

    def form_valid(self,form):
        self.object = form.save(commit=False)
        self.object.save()
        return super().form_valid(form)

    def get_success_url(self):
        return reverse('adminpanel:widgets')

class SettingsListView(ListView):
    model = Widget
    ordering = ['widget_order']

class DeleteWidget(LoginRequiredMixin,SelectRelatedMixin,DeleteView):
    model = Widget
    select_related = ('Widget',)
    success_url = reverse_lazy('settings')

    def get_queryset(self):
        queryset = super().get_query()
        return queryset.filter(user_id=self.request.user.id)

    def delete(self):
        return super().delete(*args,**kwargs)

颜色设置应用views.py：

from django.shortcuts import render
from colorsets.forms import ColorForm
from colorsets import models
from colorsets.models import ColorSet
from django.utils import timezone

from django.contrib.auth import authenticate,login,logout
from django.http import HttpResponseRedirect, HttpResponse
from django.core.urlresolvers import reverse,reverse_lazy
from django.contrib.auth.decorators import login_required
from django.contrib.auth.mixins import LoginRequiredMixin
from braces.views import SelectRelatedMixin
from django.views.generic import (TemplateView,ListView,
                                    DetailView,CreateView,
                                    UpdateView,DeleteView)

# Create your views here.
#def index(request):
#   return render(request,'index.html')

class PostListView(ListView):
    model = ColorSet

    def get_queryset(self):
        return ColorSet.objects.filter(published_date__lte=timezone.now()).order_by('-published_date')

class CreateColorSetView(LoginRequiredMixin,CreateView):
    login_url = '/login/'
    redirect_field_name = 'index.html'
    form_class = ColorForm
    model = ColorSet

    def form_valid(self,form):
        self.object = form.save(commit=False)
        self.object.user = self.request.user
        self.object.save()
        return super().form_valid(form)

class DeletePost(LoginRequiredMixin,SelectRelatedMixin,DeleteView):
    model = models.ColorSet
    select_related = ('user',)
    success_url = reverse_lazy('index')

    def get_queryset(self):
        queryset = super().get_queryset()
        return queryset.filter(user_id=self.request.user.id)

    def delete(self,*args,**kwargs):
        return super().delete(*args,**kwargs)

index.html:

{% extends "base.html" %}

{% block content %}

<div class="container">
    {% include "adminpanel/widget_list" %}
    <div class="sidebar">

    </div>

    <div class="content">
    {% for colorset in colorset_list %}
            <div class="colorset-info">
                <h3 class="set-name">{{ colorset.name }}</h3>
                    <p class="author accent-text">Author: {{ colorset.user }}</p>

                    {% if user.is_authenticated and colorset.user == user %}
                        <a class="auth-user-options" href="{% url 'colorsets:delete' pk=colorset.pk %}">Delete</a>
                    {% endif %}
            </div>
            <table class="colorset">
                <tr>
                    <td class="color" style="background-color:#{{ colorset.color_one }}">
                    </td>
                    <td class="color" style="background-color:#{{ colorset.color_two }}">
                    </td>
                    <td class="color" style="background-color:#{{ colorset.color_three }}">
                    </td>
                    <td class="color" style="background-color:#{{ colorset.color_four }}">
                    </td>
                    <td class="color" style="background-color:#{{ colorset.color_five }}">
                    </td>
                </tr>
                <tr>
                    <td>
                        <p>#{{ colorset.color_one }}</p>
                    </td>
                    <td>
                        <p>#{{ colorset.color_two }}</p>
                    </td>
                    <td>
                        <p>#{{ colorset.color_three }}</p>
                    </td>
                    <td>
                        <p>#{{ colorset.color_four }}</p>
                    </td>
                    <td>
                        <p>#{{ colorset.color_five }}</p>
                    </td>
                </tr>
            </table>
    {% endfor %}
    </div>
</div>

{% endblock %}

widget_list.html：

{% extends "base.html" %}

{% block content %}

<div class="container">
    <div class="content">
        <div class="widgets-list">
        {% for widget in widget_list %}
            <h3>{{ widget.name }}</h3>
            <h3>{{ widget.widget_order }}</h3>
            <div>
                <p>{{ widget.body }}</p>
            </div>
        {% endfor %}
        </div>
        <a class="#" href="{% url 'adminpanel:create-widget' %}">New Widget</a>
    </div>
</div>

{% endblock %}

这是我希望在 index.html 上发生的事情：

以下是实际发生的情况：

Answer 1

首先，views.py 分配了错误的上下文名称，只需交换它们即可。

第二个问题是你如何构建你的模板：

index.html 包含widget_list（不带“.html”！）这段代码定义了block content 的内容。并且已经在块内容中调用。

在我看来，您应该创建一个widget_list_inner.html，其中只包含您想在应用程序的其他部分重用的代码。

新的widget_list.html

{% extends "base.html" %}

{% block content %}

<div class="container">
    <div class="content">
        {% include "adminpanel/widget_list_inner.html" %}
        <a class="#" href="{% url 'adminpanel:create-widget' %}">New Widget</a>
    </div>
</div>

{% endblock %}

widget_list_inner.html

  <div class="widgets-list">
    {% for widget in widget_list %}
        <h3>{{ widget.name }}</h3>
        <h3>{{ widget.widget_order }}</h3>
        <div>
           <p>{{ widget.body }}</p>
        </div>
    {% endfor %}
  </div>

现在您可以在 index.html 的任何位置包含 widget_list_inner

对 color_set.html 应用相同的内容。是的，将代码从index.html 中移出。看看包含的文档：https://docs.djangoproject.com/en/1.11/ref/templates/builtins/#include

如您所见，您可以将上下文值传递给您的包含，这有助于在您的应用中的任何地方重用 *_inner.html 模板。