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 % }
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 % }
You must used this way:
{ % for product_type, products in product_list.items % } { { product_type } } { % for product in products % } { { product } } { % endfor % } { % endfor % }
In the view:
my_dict = {
'parrot': ('dead', 'stone'),
'lumberjack': ('sleep_all_night', 'work_all_day')
}
In the template:
<select>
{% for key, tuple in my_dict.items %}
<option value="{{ key }}" important-attr="{{ tuple.0 }}">{{ tuple.1 }}</option>
{% endfor %}
</select>
Just send the template a list of product types and do something like:
{ % for product_type in product_type_list % } { { product_type } } { % for product in product_type.products.all % } { { product } } { % endfor % } { % endfor % }
In Python and Django you can do this: , I honestly don't know about the core tenants of the templating language. It might not be a bug then but my opinion is that it's a bad design decision and I'm questioning it. , It lends itself to invalid and "incorrect" template code which can potentially hide programming mistakes that come back and bite you later. , Fixed #13408 -- Deprecated silent unpacking exception passing in for template tag.
In Python and Django you can do this:
points_3d = [(1, 1, 1), (2, 2, 0), ] # python for x, y, z in points_3d: pass # django template { % for x, y, z in points_3d % } { % endfor % }
However, in Python you can't do this
for x, y in points_3d: ValueError: too many values to unpack # or for x, y, z, w in points_3d: ValueError: need more than 3 values to unpack
BUT Django allows it and doesn't raise a ValueError
and I think this is bad. It allows you to do this:
{ % for x, y, z, w in points_3d % } no probs: ({ % endfor % }
Unless all of these conditions are met, passing a function to the template is more in line with the design of Jinja2.,The template system isn’t safe against untrusted template authors. For example, a site shouldn’t allow its users to provide their own templates, since template authors can do things like perform XSS attacks and access properties of template variables that may contain sensitive information.,'libraries': A dictionary of labels and dotted Python paths of template tag modules to register with the template engine. This can be used to add new libraries or provide alternate labels for existing ones. For example:,For historical reasons, both the generic support for template engines and the implementation of the Django template language live in the django.template namespace.
My first name is { { first_name } }.My last name is { { last_name } }.
My first name is John.My last name is Doe.
{ { my_dict.key } } { { my_object.attribute } } { { my_list .0 } }
{ % csrf_token % }
{
% cycle 'odd'
'even' %
}
{ % if user.is_authenticated % } Hello, { { user.username } }. { % endif % }
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... ,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.,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},Don't forget the variable items in the dictionary data
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 % }
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 % }
You must used this way:
{ % for product_type, products in product_list.items % } print product_type { % for product in products % } print product { % endfor % } { % endfor % }
Each tuple contains the name and year of a movie. Django template tags don’t allow the use of subscripts. Instead of using square brackets to access a value in a tuple or list as you do in Python, you use a number as a property of the object. , 6 days ago Sep 22, 2021 · Django templates use their own mini-language that's inspired by Python. This tutorial covers Django template tags and filters, explaining how to compile and use templates. ... Instead of using square brackets to access a value in a tuple or list as you do in Python, you use a number as a property of the object. The values of ... ,How can I access a value of t in Django templates without using a for loop? I have tried the following and it doesn't seem to work:, 6 days ago Django How can I access a value of t in Django templates without using a for loop? I have tried the following and it doesn't seem to work: Answer …
t = [] t.append(("a", 1)) t.append(("b", 2)) t.append(("c", 3)) return render_to_response(t.html, context_instance = RequestContext(request, {
't': t
}))
t = [] t.extend([('a', 1), ('b', 2), ('c', 3)])
{
{
tuple[0]
}
}
def fun(request): tuple = ('a', 'b', 'c', 'd') return render(request, 'template.html', {
'tuple': tuple
})
{ { tuple .0 } }
{% for item in tuple %}<span>{{ item }}</spam>{% endfor %}
Access the third item of a tuple in first element of a list of tuples in django template,Django access the length of a list within a template,Django templates: accessing the previous and the following element of the list,Can I access attributes of the first object in a list in Django templates?
Inside the template you should be able to use dot notation and django will unpack it for you:
{ { lista .0 .2 } }