Hi all,
there have been at least three threads in this list alone from people
asking how to "break" from a for loop in templates, so the following
snippet [1] might be useful to some. Leaving aside the "thou shalt not
use logic in templates" religious debate, it's interesting in that it
is syntactically more powerful than the respective Python statements:
you can continue/break not just from the innermost loop but from outer
ones too. Here's a small example:
{% for key,values in mapping.iteritems %}<br/>
{% for value in values %}
{{ key }}: {{ value }}<br/>
{% if value|divisibleby:3 %}
{{ value }} is divisible by 3<br/>
{{ forloop.parentloop|continue }}
{% endif %}
{% endfor %}
{{ key }}: No value divisible by 3<br/>
{% endfor %}
Given context = {'mapping': dict(a=[1,2,3], c=[2,4,5], b=[3,5,7])},
the output is:
a: 1
a: 2
a: 3
3 is divisible by 3
c: 2
c: 4
c: 5
c: No value divisible by 3
b: 3
3 is divisible by 3
Tested (lightly) on Django 1.2 / Python 2.6; please let me know if you
hit any bugs or unexpected behavior.
Cheers,
George
[1] http://djangosnippets.org/snippets/2092/
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