Question

I’m looking for short conditional statement in python/django templates, so I could write less and reuse more. Something like (tkey in disabled_rows) ? “disabled-row” : “”.

Here’s what I’m doing:

{% if tkey in disabled_rows %}
    <tr class="disabled-row">
{% else %}  
    <tr>    
{% endif %}

I also tried a custom template tag without success:

{{ (tkey in disabled_rows)|xif:'true,false' }}

xif implementation:

def xif(cond, args):
if cond:
    return args.split(',')[0]
else:
    return args.split(',')[1]

Extra points if you can explain why this is not implemented natively in python.

Answer 1

For the example you gave, this solution is short and simple:

<tr {% if tkey in disabled_rows %} class="disabled-row"{% endif %}>

Perhaps there is something else you’re trying to achieve that would be better elucidated with a different example?