Django | URL Reverse

URL Reverse의 장점
1. 개발자가 일일이 URL을 계산할 필요가 없다
2. URL이 변경되더라도, URL Reverse가 변경된 URL을 추적한다 (누락될 일이 없음)

• askcompnay/urls.py

from django.conf import settings
from django.contrib import admin
from django.conf.urls import include, url
from django.urls import path, include
from django.conf.urls.static import static

urlpatterns = [
    path('admin/', admin.site.urls),
    path('shop/', include('shop.urls')),
    path('blog/', include('blog.urls')),
]

# path('myblog/', include('blog.urls')),  --> myblog로 바꿔도 코드 수정없이 잘 돌아감
    

• shop/models.py

    def get_absolute_url(self):
        # return reverse('shop:item_detail', args=[self.pk])
        return reverse('shop:item_detail', kwargs={'pk': self.pk})
        
        

• shop/urls.py에 name 지정 필수

from django.urls import path, register_converter, re_path
from .converters import FourDigitYearConverter
from shop.views import item_list, item_detail, archives_year


register_converter(FourDigitYearConverter, 'yyyy')

app_name = 'shop'

urlpatterns = [
    path('archives/<yyyy:year>/', archives_year, name='archives_year'),
    path('', item_list, name='item_list'),
    path('<int:pk>/', item_detail, name='item_detail'),
]

# path('detail/<int:pk>/', item_detail, name='item_detail') --> detail 추가되도 코드 수정 안해도됨(reverse니깐)

• shop/item_list.html

<ul>
    {% for item in item_list %}
    <li>
        <a href="{{ item.get_absolute_url }}">
            {{ item.name }}
        </a>
        {{ item.price }}
        {{ item.desc }}
    </li>
    {% endfor %}
</ul>