djangohumanize

How to humanize measurement queries in Django

I have a distance query in Django and prints a distance with several decimal points. It displays distance in a measurement format as 1023.40258027906 m .I want to make this human readable. I tried using Decimal but this failed as it does not apply to measurement objects. Measurement objects are distance objects with labels like km, m, cm. By humanize, I mean not more than 2 or 3 decimal digits. These are import from

from django.contrib.gis.measure import D
from django.contrib.gis.db.models.functions import Distance

Here is the Queryset used to generate the distance measurements. Queryset:

queryset = Apartment.objects.filter(geom__distance_lte=(user_location, D(km=2))).annotate(distance=Distance('geom', user_location))


 <style type="text/css">
        ul{
            list-style-type: circle;
            margin:0px;
            padding-left: 1em;
        }
    </style>
    <head>
        
    </head>
    <body><strong>Nearby Apartments</strong>
        {% if apartments %}
        <ul>
        {% for apartment in apartments %}
            <li>
            {{ apartment.apt_id }}: {{apartment.distance}}
            </li>
        {% endfor %}
        </ul>
        {% endif %}
    </div> 
    </body>
Solution

  • If you want to round the value to a specific precision you can use the floatformat template filter [Django docs] to do this.

    Since the distance is a Distance object from django.contrib.gis.measure you can get the distance in your preferred format by writing distance.<format_name> e.g. distance.m and then you can use floatformat on that:

    <!-- round to 3 decimal places -->
{{ apartment.distance.m|floatformat:3 }} m

    There are more ways to configure the output of this filter which are shown in the documentation linked above.