template filter for django easy-thumbnails image orientation check (is_portrait)

readme.md

1. Install easy-thumbnails for django
2. make folder templatetags in app containing empty __init__.py and is_portrait.py
3. use filter in django template

is_portrait.py

# -*- coding: utf-8 -*-

from django import template
register = template.Library()


@register.filter(is_safe=True)
def is_portrait(im):
    if im.image.height > im.image.width:
        return True
    else:
        return False

template_snippet.html

{% load is_portrait %}
{% load thumbnail %}

  {% if textmedia.image|is_portrait %}         
                {% thumbnail textmedia.image "360x2000" upscale=False as thumb %}
                <img src="{{ thumb.url }}" alt="{{ textmedia.image.default_caption }}"><br>
                {% if textmedia.default_caption %}<span class="acaption">{{ textmedia.image.default_caption }}</span><br>{% endif %}
            {% else %}
                {% thumbnail textmedia.image "580x2000" upscale=False as thumb %}
                <img src="{{ thumb.url }}" alt="{{ textmedia.image.default_caption }}"><br>
                {% if textmedia.default_caption %}<span class="acaption">{{ textmedia.image.default_caption }}</span><br>{% endif %}
  {% endif %}