Re: problem with get_absolute_url()

 forgot to paste the model methods

@models.permalink
    def get_absolute_url(self):
        return ('catalog_category', (), {'category_slug' : self.category_slug })

@models.permalink
    def get_absolute_url(self):
        return ('catalog_product', {}, {'product_slug': self.product_slug})

пятница, 7 августа 2015 г., 21:15:25 UTC+3 пользователь Александр Мусаров написал:

Hi, just wrapping my head around django, and trying to write an ecommerce store, when trying to pull out all products belonging to a category getting such an error

NoReverseMatch at /catalog/smartphony/

Reverse for 'catalog_product' with arguments '()' and keyword arguments '{'product_slug': 'samsung-galaxy-s5-sm-g900f-16gb'}' not found. 0 pattern(s) tried: []

Request Method:	GET
Request URL:	http://127.0.0.1:8000/catalog/smartphony/
Django Version:	1.8.2
Exception Type:	NoReverseMatch
Exception Value:	Reverse for 'catalog_product' with arguments '()' and keyword arguments '{'product_slug': 'samsung-galaxy-s5-sm-g900f-16gb'}' not found. 0 pattern(s) tried: []
Exception Location:	C:\Users\LAPTOP\djangoenvs\py34\lib\site-packages\django\core\urlresolvers.py in _reverse_with_prefix, line 496
Python Executable:	C:\Users\LAPTOP\djangoenvs\py34\Scripts\python.exe
Python Version:	3.4.3
Python Path:	['C:\\Users\\LAPTOP\\Desktop\\djangodev\\eshop', 'C:\\Users\\LAPTOP\\djangoenvs\\py34\\lib\\site-packages\\setuptools-18.0.1-py3.4.egg', 'C:\\Windows\\system32\\python34.zip', 'C:\\Users\\LAPTOP\\djangoenvs\\py34\\DLLs', 'C:\\Users\\LAPTOP\\djangoenvs\\py34\\lib', 'C:\\Users\\LAPTOP\\djangoenvs\\py34\\Scripts', 'C:\\Python34\\Lib', 'C:\\Python34\\DLLs', 'C:\\Users\\LAPTOP\\djangoenvs\\py34', 'C:\\Users\\LAPTOP\\djangoenvs\\py34\\lib\\site-packages']
Server time:	Пт, 7 Авг 2015 21:07:01 +0300

Error during template rendering

In template C:\Users\LAPTOP\Desktop\djangodev\eshop\catalog\templates\categories\category.html, error at line 17

Reverse for 'catalog_product' with arguments '()' and keyword arguments '{'product_slug': 'samsung-galaxy-s5-sm-g900f-16gb'}' not found. 0 pattern(s) tried: []

7	<ol class="breadcrumb">
8	<li><a href="/">Главная</a></li>
9	<li><a href="/catalog/">Каталог</a></li>
10	<li class="active">{{ c.category_name }}</li>
11	</ol>
12	</div>
13	<h1>{{ c.category_name }}</h1>
14	<br/><br/>
15	{% for p in products %}
16	<div class = "product_thumbnail">
17	<a href = " {{ p.get_absolute_url }} ">-- Here the debugger shows the mistake
18	<img src = "{{ MEDIA_URL }}/catalog/products/thumbnails/{{ p.product_image }}" alt = "{{ p.product_name }}" class = "bn" />
19	<br/>
20	{{ p.product_name }}
21	</a>
22	</div>
23	{% endfor %}
24
25	{% endblock %}

Here are my URL patterns

url(r'^(?P<category_slug>[-\w]+)/$', views.category, name = 'category_detail' ),
 url(r'^(?P<category_slug>[-\w]+)/(?P<product_slug>[-\w]+)/$', views.product, 'catalog_product', name = 'product_detail'),

Here are the corresponding views

def category(request, category_slug):
    category_list = Category.objects.filter(category_is_active = True)
    c = get_object_or_404(Category, category_slug = category_slug)
    products = c.product_set.all()
    page_title = c.category_name
    meta_keywords = c.category_meta_keywords
    meta_description = c.category_meta_description
    return render(request, 'categories/category.html', locals())

def product(request, product_slug):
    category_list = Category.objects.filter(category_is_active = True)
    p = get_object_or_404(Product, product_slug = product_slug)
    categories = p.product_categories.all()
    page_title = p.product_name
    meta_keywords = p.product_meta_keywords
    meta_description = p.product_meta_description
   
    # need to evaluate the HTTP method
    if request.method == 'POST':
        # add to cart... create the bound form
        postdata = request.POST.copy()
        form = ProductAddToCartForm(request, postdata)
        # check if posted data is valid
        if form.is_valid():
            # add to cart and redirect to cart page
            cart.add_to_cart(request)
            # if test cookie worked, get rid of it
            if request.session.test_cookie_worked():
                request.session.delete_test_cookie()
            url = urlresolvers.reverse('show_cart')
            return HttpResponseRedirect(url)
    else:
        # it's a GET, create the unbound form. Note request as a kwarg
        form = ProductAddToCartForm(request = request, label_suffix = ':')
    # assign the hidden input the product slug
    form.fields['product_slug'].widget.attrs['value'] = product_slug
    # set the test cookie on our first GET request
    request.session.set_test_cookie()
    return render(request, 'products/product.html', locals())

and here is the part of the corresponding view

{% for p in products %}       
      <div class = "product_thumbnail">
        <a href = "{{ p.get_absolute_url }}">
          <img src = "{{ MEDIA_URL }}/catalog/products/thumbnails/{{ p.product_image }}" alt = "{{ p.product_name }}" class = "bn" />
          <br/>
            {{ p.product_name }}
        </a>
        </div>
    {% endfor %}      

Thanx in advance )

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