My New filters and tags

[GabeSoler]

Hi, I am already working on my second Coltrane project, and I started tinkering with the template tags provided, aiming to use them for links and breadcrumbs.

I found the current ones a little limiting, so I built from them my custom ones.

last_url: It is similar to the last path, but it is a filter. You can also add a number to choose a section of the URL you give it (from /hi/how/are/you/ you can pick 2 and would be 'are'), with default of -1.

url_section : another filter that you can use to gets slice, giving a position when to end [:until] (here 2 could be 'hi/how/are/'.

breadcrumb: This tag renders a breadcrumb if you give it a URL, in this case, the slug that comes with the content. It is extremely useful for content-based sites. Mine is made with Bootstrap, but it could be done neutrally.

custom.py

from django import template
from django.template.defaultfilters import stringfilter

register = template.Library()

def path_list(url:str)->list:
    url = str(url)
    broken_url = url.strip()
    broken_url = broken_url.split("/")
    return broken_url

@register.filter
@stringfilter
def last_url(value:str,place=-1):
    if value.endswith("/"):
        value = value[:-1]
    if value.startswith("/"):
        value = value[1:]
    value = path_list(value)
    value = value[place]
    return value

@register.filter
@stringfilter
def url_section(value:str,until=1)->str:
    url_parts = path_list(value)
    url_selected = url_parts[:until]
    url_section = "/"
    for v in url_selected:
        part = f"{v}/"
        url_section += part
    return url_section


@register.inclusion_tag("tags/breadcrumb.html")
def breadcrumb(url:str):
    path_list_local = path_list(url)
    list_length = len(path_list_local)+1
    url_list = []
    for i in range(0,list_length):
        section = url_section(url,i)
        url_list.append(section)
    return {"url_list":url_list[1:]}

breadcrumb.html

<nav aria-label="breadcrumb">
    <ol class="breadcrumb">
      <li class="breadcrumb-item"><a href="/">Home</a></li>
      {% for address in url_list %}
      {% if forloop.last %}
      <li class="breadcrumb-item text-primary">{{address|last_url}}</li>
      {% else %}
      <li class="breadcrumb-item"><a href="{{address}}">{{address|last_url}}</a></li>
      {% endif %}  
      {% endfor %}
    </ol>
  </nav>