如何在 django 上动态更改块的内容？

Question

查看下面的固定代码

我正在使用 django 1.8 开发我的第一个网页项目。我的网页有一个部分，该部分由一个产品菜单和一个基于所选菜单项显示不同视图的列组成。

起初我尝试了一种方法，其中每个菜单按钮都分配了一个 onclick js 函数来更改块的内容。我在想，然后我会将每个产品的 html 代码写入单独的文件中，并由 js 函数读取。我让它部分工作，但感觉有点粗略。

我的第二种方法是基于使用 django 模板，但作为初学者我遇到了一些错误，我无法弄清楚到底是什么问题。如果有人能指出我做错了什么或告诉我动态更改内容的正确方法是什么，我将不胜感激。

我目前遇到的错误：

http://127.0.0.1:8000/productmonitor/
NoReverseMatch at /productmonitor/
Reverse for 'product' with arguments '('',)' and keyword arguments '{}' not found. 1 pattern(s) tried: [u'productmonitor/(?P<product_name>[a-z]+)/$']

http://127.0.0.1:8000/productmonitor/
NoReverseMatch at /productmonitor/dualpol/
Reverse for 'product' with arguments '('',)' and keyword arguments '{}' not found. 1 pattern(s) tried: [u'productmonitor/(?P<product_name>[a-z]+)/$']

urls.py

# -*- coding: utf-8 -*-
from django.conf.urls import url

from . import views

urlpatterns = [
    url(r'^$', views.index, name='index'),
    url(r'^(?P<product_name>[A-Za-z0-9\-\_]+)/$', views.product, name='product'),
    url(r'^information/$', views.information, name='information'),
    url(r'^casedatabase/$', views.casedatabase, name='casedatabase'),
    url(r'^contact/$', views.contact, name='contact'),
]

views.py

from django.http import HttpResponse
from django.shortcuts import get_object_or_404, render
from django.views import generic
# Create your views here.
from .models import Product

def index(request, product_name='default'):
    #template = 'productmonitor/index.html'
    if product_name == 'dualpol':
        template = 'productmonitor/base_productmonitor_dualpol.html'
    if product_name == 'rhi':
        template = 'productmonitor/base_productmonitor_rhi.html'

    template = 'productmonitor/base_productmonitor.html'
    test_context = {
                    'products' : Product.objects.all(),                   
                    }
    return render(request, template, test_context)

def product(request, product_name='dualpol'):
    if product_name == 'dualpol':
        template = 'productmonitor/base_productmonitor_dualpol.html'
    if product_name == 'rhi':
        template = 'productmonitor/base_productmonitor_rhi.html'

    test_context = {
                    'products' : Product.objects.all(),                   
                    }
    return render(request, template, test_context)

base_productmonitor.html

{% extends "productmonitor/base.html" %}    
{% block content %}
    <div class="productSelectMenu">
        <ul>
            <p>Test</p>
            {% for product in products %}
                <li><a href="{% url 'productmonitor:product' 'dualpol' %}">{{ product.name }}<a/></li>  
            {% endfor %}
        </ul>
    </div>

    {% block productcontent %}
        <div id="productView" class="productView">
            <p>Default productView content</p>    
        </div>
    {% endblock %}
{% endblock %}

base_productmonitor_dualpol.html

{% extends "productmonitor/base_productmonitor.html" %}
{% block productcontent %}
<p>
    dualpol
</p>
{% endblock %}

编辑：固定版本

urls.py

# -*- coding: utf-8 -*-
from django.conf.urls import url

from . import views

urlpatterns = [
    url(r'^$', views.index, name='index'),
    url(r'^product/(?P<product_name>[a-z]+)/$', views.product, name='product'),
    url(r'^information/$', views.information, name='information'),
    url(r'^casedatabase/$', views.casedatabase, name='casedatabase'),
    url(r'^contact/$', views.contact, name='contact'),
]

views.py

enter code here
from django.http import HttpResponse
from django.shortcuts import get_object_or_404, render, redirect
from django.views import generic
# Create your views here.
from .models import Product

def index(request, product_name=''):
    return redirect('productmonitor:product', product_name='dualpol')

def product(request, product_name):
    if product_name == 'dualpol':
        template = 'productmonitor/base_productmonitor_dualpol.html'
    if product_name == 'rhi':
        template = 'productmonitor/base_productmonitor_rhi.html'

    test_context = {
                    'products' : Product.objects.all(),                   
                    }
    return render(request, template, test_context)

def information(request):
    template = 'productmonitor/base_information.html'
    context = {}
    return render(request, template, context)

def casedatabase(request):
    template = 'productmonitor/base_case-database.html'
    context = {}
    return render(request, template, context)

def contact(request):
    template = 'productmonitor/base_contact.html'
    context = {}
    return render(request, template, context)

base_productmonitor.html

{% extends "productmonitor/base.html" %}

{% block content %}
    <div class="productSelectMenu">
        <ul>
            <li><a href="{% url 'productmonitor:product' 'dualpol' %}">Dual pol<a/></li>
            <li><a href="{% url 'productmonitor:product' 'rhi' %}">Rhi<a/></li>
        </ul>
    </div>

    {% block productcontent %}
        <div id="productView" class="productView">
            <p>Default productView content</p>    
        </div>
    {% endblock %}
{% endblock %}

base_productmonitor_dualpol.html

{% extends "productmonitor/base_productmonitor.html" %}
{% block productcontent %}
<div id="productView" class="productView">
    <p>
        dualpol
    </p>
</div>
{% endblock %}

Answer 1

我认为错误是说您的产品功能中的渲染没有得到正确的 <product_name> 使用。它表明它拥有的论点（它正在尝试的<product_name>）没有。因此，您在产品功能中要做的就是尝试并确保您确实获得了<product_name>。