New node code.python.django

notes/code.python.django.md

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+---
+id: 01t8dold57nwpw63e18ba80
+title: Django
+desc: ''
+updated: 1687309242924
+created: 1687307760199
+---
+
+# Highlight current page in navbar
+
+
+
+You can get the name of the url (referenced in your urlpatterns). Then set the 'active' class if the url matches.
+
+```python
+{% with url_name=request.resolver_match.url_name %}
+<li class="dropdown {% if url_name == 'index' %}active{% endif %}"
+   <a href="{% url 'index' %}" >Home </a>
+</li>
+<li>...</li>
+{% endwith %}
+```
+
+In practice it is also useful to prepend the app_name into the path, por example, there
+might be the `about:index` page and the `home:index` page, which both have the same
+`url_name` as of `Django 4.2`. In order to deal with this case, we also get the app name
+from the resolver,
+
+```python
+{% with app_name=request.resolver_match.app_names.0 url_name=request.resolver_match.url_name %}
+<li class="dropdown {% if app_name == 'home' and url_name == 'index' %}active{% endif %}"
+   <a href="{% url 'home:index' %}" >Home </a>
+</li>
+<li>...</li>
+{% endwith %}
+```
+
+
+# References
+
+1. [Django: Highlight current page in navbar](https://stackoverflow.com/questions/39639264/django-highlight-current-page-in-navbar)
+2. [get app name from url in django](https://stackoverflow.com/questions/19261269/get-app-name-from-url-in-django)