error using custom template tags in django? [closed]

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I want to use pass parameters to the URL as get request within the template. Currently I am hard coding the url such as

<li><a href="{{ request.path|add:'?sort_by=vehicle_price' }}" style="text-decoration: underline; color: red;">Lowest Price</a></li>

I found this code which seems to be elegant. so I tried to use it. but it throws error: I have correctly placed the template tag inside myapp/templatetags/add_url_parameter.py.

I have also registered django.core.context_processors.request' in TEMPLATE_PROCESSORS

In the template, I have:

{% extends "base.html" %}
{% load bootstrap3 %}
{% load crispy_forms_tags %}
{% load add_url_parameter %}
{% block content %}
<div class="sortByLinks">
      <h4>Sort by:</h4>
      <ul class="list-inline">
        <li>
          {% if sort_by == "last_updated" %}

         <li> <strong>New Post</strong>
         <li><a href="{% add_get_paramater param1='vehicle_price' %}" style="text-decoration: underline; color: red;">Lowest Price</a></li>
         <li><a href="{% add_get_paramater param1='vehicle_year' %}" style="text-decoration: underline; color: red;">Latest Model Year</a></li>

          {% elif sort_by == "vehicle_price" %}
          <li><a href="{% add_get_paramater param1='last_updated' %}" style="text-decoration: underline; color: red;">New Post</a></li>
           <li> <strong>Lowest Price</strong>
           <li><a href="{% add_get_paramater param1='vehicle_year' %}" style="text-decoration: underline; color: red;">Latest Model Year</a></li>

          {% else %}
           <li><a href="{% add_get_paramater param1='last_updated' %}" style="text-decoration: underline; color: red;">New Post</a></li>
           <li><a href="{% add_get_paramater param1='vehicle_price' %}" style="text-decoration: underline; color: red;">Lowest Price</a></li>
           <li> <strong>Latest Model Year</strong>
          {% endif %}
      </ul>
    </div>
{% endblock %}

I get the following error:

Invalid block tag: 'add_get_paramater', expected 'elif', 'else' or 'endif'

In template /Users/Documents/python/django/my_app/templates/my_app/blog_detail.html, error at line 127

and line 127 is

<li><a href="{% add_get_paramater param1='vehicle_price' %}" style="text-decoration: underline; color: red;">Lowest Price</a></li>

Answer 1

If you are using this snippet: https://djangosnippets.org/snippets/2105/ you probably have a typo in your template. Try changing it to {% add_get_parameter %} (not {% add_get_paramater %}).