Django - How to do tuple unpacking in a template 'for' loop

Solution 1:

Another way is as follows.

If one has a list of tuples say:

mylst = [(a, b, c), (x, y, z), (l, m, n)]

then one can unpack this list in the template file in the following manner. In my case I had a list of tuples which contained the URL, title, and summary of a document.

{% for item in mylst %}    
     {{ item.0 }} {{ item.1}} {{ item.2 }}    
{% endfor %}

Solution 2:

it would be best if you construct your data like {note the '(' and ')' can be exchanged for '[' and ']' repectively, one being for tuples, one for lists}

[ (Product_Type_1, ( product_1, product_2 )),
   (Product_Type_2, ( product_3, product_4 )) ]

and have the template do this:

{% for product_type, products in product_type_list %}
    {{ product_type }}
    {% for product in products %}
        {{ product }}
    {% endfor %}
{% endfor %}

the way tuples/lists are unpacked in for loops is based on the item returned by the list iterator. each iteration only one item was returned. the first time around the loop, Product_Type_1, the second your list of products...