I'm trying to concatenate some strings to format a URL inside my template tag, but I don't find an elegant way.
So far, what I have is:
{% button "Activate" "http://" site.domain url 'registration_activate' activation_key %}
Is there any best practice to make it a bit more "readable"?
Thanks a lot
Zahid Sumon
You can concatenate two strings in Django template as follows:
{{"First String "|add:"Second String"}}
Just replace the two strings with your own variable.
What I use when I want to concatenate strings in Django templates from variables (examples taken from my own code, tell me if you need something closer to your case):
<html>
<input id="myid_{{idBase}}_{{idFinal}}" type="checkbox"></input>
</html>
and inside a django tag, I use the keyword "add" associated with the keywork with
{% with 'images/'|add:file_name as image_static %}
<img src="{% static image_static %}" title = "{{ tooltip }}" alt = "{{ title }}"/>
{% endwith %}
来源：https://stackoverflow.com/questions/27708849/django-string-concatenation-inside-template-tag-best-practice