for

Loop over multiple values in a list or search result.

{% for %} loops over a list of values. For example to loop over a list of colors:

{% for color in ["bleu", "blanc", "rouge"] %}{{ color }}{% endfor %}

This will output “bleublancrouge”.

Or to show the latest ten news article titles:

{% for id in m.search[{latest cat="news" pagelen=10}] %}
  {{ m.rsc[id].title }}
{% endfor %}

The argument list can also contain tuples or sublists, in that case you can assign all parts of the list items to different variables at once:

{% for nr,color in [ [1,"bleu"], [2,"blanc"], [3,"rouge"] ] %}
  {{ nr }}: {{ color }}
{% endfor %}

This will output:

1: bleu
2: blanc
3: rouge

The for loop sets a number of variables available in the loop:

Variable Description
forloop.counter The current iteration of the loop (1-indexed)
forloop.counter0 The current iteration of the loop (0-indexed)
forloop.revcounter The number of iterations from the end of the loop (1-indexed)
forloop.revcounter0 The number of iterations from the end of the loop (0-indexed)
forloop.first True if this is the first time through the loop
forloop.last True if this is the last time through the loop
forloop.parentloop For nested loops, this is the loop “above” the current one

For ... empty

{% for %} can take an optional {% empty %} clause that will be displayed if the given list is empty.

For example:

{% for id in m.search[{latest cat="news" pagelen=10}] %}
  {{ m.rsc[id].title }}
{% empty %}
  Sorry, there is no news.
{% endfor %}

This will output “Sorry, there is no news.” when the “latest” search did not find any pages within the category “news”.

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