Switch Case in Django Template

Question

I'm trying to put different template for different category based on category ID. I'm using Django 1.3. Switch case is not working with Django 1.3, I get this error:

Invalid block tag: 'switch', expected 'endblock' or 'endblock content'

but switch case had been correctly closed.

Here is my code:

{% switch property.category.id %}
        {% case 0 %}
                 <h4>'agriculture'</h4>
        {% case 1 %}
                  <h4>'Residential'</h4>
        {% case 2 %}
                  <h4>'commiercial'</h4>
        {% case 3 %}
                  <h4>'mixed use'</h4>
        {% case 4 %}
                  <h4>'Industrial'</h4>
        {% else %}
                 <h4>'retail'</h4>
{% endswitch %}

What is the error in this code?

Why would you think this would work? What makes you think there is a `switch` tag in Django? (And why are you using Django 1.3, which has been unsupported for years?) — Daniel Roseman, Jun 15 '15 at 12:47
https://djangosnippets.org/snippets/967/ existing app was in 1.3 many years ago....Don't have permission to upgrade it. — shiva sankar, Jun 15 '15 at 12:49
So, have you put that code somewhere? Have you loaded the tag in your template? — Daniel Roseman, Jun 15 '15 at 12:50
I don't understand that comment. Where is the code in your project? Where is the line where you load that tag in your template? — Daniel Roseman, Jun 15 '15 at 13:00

geckon · Accepted Answer · 2015-06-15T15:25:08.367

There is no {% switch %} tag in Django template language. To solve your problem you can

either use this Django snippet, that adds the functionality,
or re-write your code to a series of {% if %}s.

The second option in code:

{% if property.category.id == 0 %}
    <h4>'agriculture'</h4>
{% elif property.category.id == 1 %}
    <h4>'Residential'</h4>
{% elif property.category.id == 2 %}
    <h4>'commiercial'</h4>
{% elif property.category.id == 3 %}
    <h4>'mixed use'</h4>
{% elif property.category.id == 4 %}
    <h4>'Industrial'</h4>
{% else %}
    <h4>'retail'</h4>
{% endif %}

As Alasdair correctly mentioned in his comment, the {% elif %} tag was introduced in Django 1.4. To use the above code in an older version you need to upgrade your Django version or you can use a modified version:

{% if property.category.id == 0 %}
    <h4>'agriculture'</h4>
{% endif %}
{% if property.category.id == 1 %}
    <h4>'Residential'</h4>
{% endif %}
{% if property.category.id == 2 %}
    <h4>'commiercial'</h4>
{% endif %}
{% if property.category.id == 3 %}
    <h4>'mixed use'</h4>
{% endif %}
{% if property.category.id == 4 %}
    <h4>'Industrial'</h4>
{% endif %}
{% if property.category.id < 0 or property.category.id > 4 %}
    <h4>'retail'</h4>
{% endif %}

This modification is safe** (but inefficient) here since the ID can't be equal to two different integers at the same time.

** as long as you only use integers for the IDs which is probable

However I would strongly recommend upgrading to a newer Django version. Not only because of the missing {% elif %} tag but mainly for security reasons.

elif was introduced in Django 1.4, the op is using Django 1.3. — Alasdair, Jun 15 '15 at 15:09

Switch Case in Django Template

1 Answers1