Django template - dynamic variable name

Question

Good Afternoon,

How can I use a variable variable name in Django templates?

I have a custom auth system using context, has_perm che

Answer 1

You can try like this,

{{ dict|key:key_name }}

Filter:

def key(d, key_name):
    return d[key_name]
key = register.filter('key', key)

More information, django ticket

Answer 2

You're best off writing your own custom template tag for that. It's not difficult to do, and normal for this kind of situation.

I have not tested this, but something along these lines should work. Remember to handle errors properly!

def lookup(object, property):
    return getattr(object, property)()

register.simple_tag(lookup)

If you're trying to get a property rather than execute a method, remove those ().

and use it:

{% lookup has_perm "depauth" %}

Note that has_perm is a variable, and "depauth" is a string value. this will pass the string for lookup, i.e. get has_perm.depauth.

You can call it with a variable:

{% with arg_value="depauth_other_value" %}
    {% lookup has_perm arg_value %}
{% endwith %}

which means that the value of the variable will be used to look it up, i.e. has_perm.depauth_other_value'.