Need to convert a string to int in a django template

Question

you can coerce a str to an int using the add filter

{% for item in numItems|add:"0" %}

https://docs.djangoproject.com/en/dev/ref/templates/builtins/#add

to coerce int to str just use slugify

{{ some_int|slugify }}

EDIT: that said, I agree with the others that normally you should do this in the view - use these tricks only when the alternatives are much worse.

I like making a custom filter:

# templatetags/tag_library.py

from django import template

register = template.Library()

@register.filter()
def to_int(value):
    return int(value)

Usage:

{% load tag_library %}
{{ value|to_int }}

It is for cases where this cannot be easily done in view.

Yes, the place for this is in the view.

I feel like the above example won't work -- you can't iterate over an integer.

numItems = request.GET.get('numItems')

if numItems:
   numItems = range(1, int(numItems)+1)

return direct_to_template(request, "mytemplate.html", {'numItems': numItems})


{% for item in numItems %}
 {{ item }}
{% endfor %}

The easiest way to do this is using inbuilt floatformat filter.

For Integer

{{ value|floatformat:"0" }}

For float value with 2 precision

{{ value|floatformat:"2" }}

It will also round to nearest value. for more details, you can check https://docs.djangoproject.com/en/1.10/ref/templates/builtins/#floatformat.